# Building permits at 21 Walnut St, Somerville, MA

The biggest project within a quarter mile since May 1: a $13M new building at 24 Webster Ave, permitted Sep 10.

Six permits on record here. The newest, Mar 2: Install Rinnai Gas Boiler and 40 Gallon Gas Hot Water Heater in the Basement. Within a quarter mile, the city has issued 131 more permits (129 projects) since May 1. Two are for new buildings, the nearest 770 ft away.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Mar 2, 2026 | Plumbing | Install Rinnai Gas Boiler and 40 Gallon Gas Hot Water Heater in the Basement | Not listed | [P26-000079](https://nearbypermits.com/somerville/permit/P26-000079/) |
| Mar 2, 2026 | Plumbing | Install Rinnai Gas Boiler and 40 Gallon Gas Hot Water Heater in the Basement. | Not listed | [G26-000067](https://nearbypermits.com/somerville/permit/G26-000067/) |
| Feb 11, 2026 | Electrical | Wire a gas fed Rinnai boiler. | $850 | [E26-000196](https://nearbypermits.com/somerville/permit/E26-000196/) |
| Jul 22, 2022 | Electrical | Install new ceiling light in bathroom | $2,000 | [E22-000987](https://nearbypermits.com/somerville/permit/E22-000987/) |
| Jun 21, 2019 | Electrical | wire up attic | $3,000 | [E19-000941](https://nearbypermits.com/somerville/permit/E19-000941/) |
| Feb 25, 2019 | Alteration or repair | ZBA 2017-57 build dormer include two bedrooms | $33,000 | [B18-001650](https://nearbypermits.com/somerville/permit/B18-001650/) |

## Within ¼ mi since May 1, 2026

131 permits in the circle. From our copy of the city's data (last 24 months).

### Next door (under 250 ft), 8 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 29, 2026 | [9 Sanborn Ave](https://nearbypermits.com/somerville/address/9-sanborn-ave/) | 190 ft S | Alteration or repair | Replace roof deck and railings on the third floor | $17,825 | [B26-001461](https://nearbypermits.com/somerville/permit/B26-001461/) |
| Aug 27, 2026 | [9 Sanborn Ave](https://nearbypermits.com/somerville/address/9-sanborn-ave/) | 190 ft S | Roofing | NEW RUBBER ROOF - Strip and Install Labor and material: Rubber roofing Scope of work: - We will be a removing the existing rubber and insulation. - We will be adding new insulation and fasten with screws and plates. - We will be gluing down new rubber (RPI.60mm thickens to the new insulation). - All | $7,200 | [B26-001318](https://nearbypermits.com/somerville/permit/B26-001318/) |
| Aug 3, 2026 | [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/) | 220 ft N | Alteration or repair | Mass Save Weatherization/Insulation. Work Scope Attached | $15,254 | [B26-000809](https://nearbypermits.com/somerville/permit/B26-000809/) |
| Jul 27, 2026 | [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/) | 220 ft N | Mechanical (HVAC) | Install HyperHeat system in basement and second floor closet. This will be a complete ductwork system sealed and wrapped. | $58,000 | [SM26-000124](https://nearbypermits.com/somerville/permit/SM26-000124/) |
| Jul 27, 2026 | [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/) | 220 ft N | Electrical | Wiring of new High Velocity Heat Pumps | $4,000 | [E26-001083](https://nearbypermits.com/somerville/permit/E26-001083/) |
| Jun 24, 2026 | [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/) | 220 ft N | Alteration or repair | Whole Home Project: Electrical, Plumbing, Drywall Patching & Plaster Work, Second Floor Rear Bath Work, Turning Bedroom into Bath and Laundry, Finish Materials for Newly Established Second Floor Bathroom and Laundry, First Floor Bathroom Re-Configure, Kitchen Space Renovation, Cabinet Construction f | $168,760 | [B26-000803](https://nearbypermits.com/somerville/permit/B26-000803/) |
| May 29, 2026 | [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/) | 220 ft N | Plumbing | Renovation of 2 bathrooms, 1 laundry, 1 kitchen, 1 half bathroom | Not listed | [P26-000317](https://nearbypermits.com/somerville/permit/P26-000317/) |
| May 13, 2026 | [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/) | 220 ft N | Electrical | Remodel Kitchen, Bathrooms, rewire dwelling new branch circuits installation of new 200amp OH Service for single family dwelling | $50,000 | [E26-000682](https://nearbypermits.com/somerville/permit/E26-000682/) |

### This block (250 to 1,000 ft), 80 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | [8 Pleasant Ave](https://nearbypermits.com/somerville/address/8-pleasant-ave/) | 830 ft N | Electrical | Wire 2 Heat pump heads and 1 30 amp condensor on 3rd fl | $2,500 | [E26-001346](https://nearbypermits.com/somerville/permit/E26-001346/) |
| Oct 5, 2026 | [40 Union Sq](https://nearbypermits.com/somerville/address/40-union-sq/) | 600 ft S | Alteration or repair | Remove asbestos containing building materials | $58,500 | [B26-001536](https://nearbypermits.com/somerville/permit/B26-001536/) |
| Oct 2, 2026 | [34 Columbus Ave](https://nearbypermits.com/somerville/address/34-columbus-ave/) | 720 ft SE | Alteration or repair | Homeowner permit-- Replacing two rotted exterior doors and one severely window with cracked plexiglass in lieu of glass. | $5,000 | [B26-001553](https://nearbypermits.com/somerville/permit/B26-001553/) |
| Oct 1, 2026 | [42 Vinal Ave](https://nearbypermits.com/somerville/address/42-vinal-ave/) | 1,000 ft N | Electrical | Installation of Sub Panel, 50 Range Circuit 240V | $2,000 | [E26-001433](https://nearbypermits.com/somerville/permit/E26-001433/) |
| Sep 29, 2026 | [26 Summer St](https://nearbypermits.com/somerville/address/26-summer-st/) | 760 ft W | Electrical | house rewire after a fire, service is newer 200A existing. | $28,500 | [E26-001242](https://nearbypermits.com/somerville/permit/E26-001242/) |
| Sep 29, 2026 | [24 Wesley Park](https://nearbypermits.com/somerville/address/24-wesley-park/) | 450 ft NW | Alteration or repair | install 1 replacement window. no structural changes. | $2,763 | [B26-001518](https://nearbypermits.com/somerville/permit/B26-001518/) |
| Sep 29, 2026 | [24 Summer St](https://nearbypermits.com/somerville/address/24-summer-st/) | 750 ft W | Alteration or repair | (Homeowner Permit) Masonry repair The existing chimney above the roofline is deteriorated and requires reconstruction. This application proposes rebuilding the chimney from the roofline up, matching the existing height, dimensions, and overall appearance. The replacement will use brick and mortar se | $2,700 | [B26-001507](https://nearbypermits.com/somerville/permit/B26-001507/) |
| Sep 24, 2026 | [33 Vinal Ave](https://nearbypermits.com/somerville/address/33-vinal-ave/) | 730 ft N | Mechanical (HVAC) | LOT B New air conditioning and heating system installation | $25,000 | [SM26-000189](https://nearbypermits.com/somerville/permit/SM26-000189/) |
| Sep 24, 2026 | [33 Vinal Ave](https://nearbypermits.com/somerville/address/33-vinal-ave/) | 730 ft N | Other | LOT A: Installation of heating and cooling system for all units. | $25,000 | [SM26-000099](https://nearbypermits.com/somerville/permit/SM26-000099/) |
| Sep 22, 2026 | [32 Stone Ave](https://nearbypermits.com/somerville/address/32-stone-ave/) | 500 ft SE | Alteration or repair | remodel kitchen on 1st and 2nd floor, build new bath on third floor,construct/modify wall,closet,closet,install new vinyl floor and base board, repair two windows, no structural work. | $87,000 | [B26-001415](https://nearbypermits.com/somerville/permit/B26-001415/) |
| Sep 22, 2026 | [28 Summer St](https://nearbypermits.com/somerville/address/28-summer-st/) | 790 ft W | Alteration or repair | Basement sill and crawlspace insulation | $1,238 | [B26-001186](https://nearbypermits.com/somerville/permit/B26-001186/) |
| Sep 21, 2026 | [32 Stone Ave](https://nearbypermits.com/somerville/address/32-stone-ave/) | 500 ft SE | Plumbing | Renovation, 1st fl kitchen and 1 full bath. 2Nd fl kitchen. 3Rd washer and 1 full bath. | Not listed | [P26-000548](https://nearbypermits.com/somerville/permit/P26-000548/) |
| Sep 21, 2026 | [32 Stone Ave](https://nearbypermits.com/somerville/address/32-stone-ave/) | 500 ft SE | Plumbing | Renovation, 1st and 2nd fl kitchen stove. | Not listed | [G26-000426](https://nearbypermits.com/somerville/permit/G26-000426/) |
| Sep 18, 2026 | [4 Lake St](https://nearbypermits.com/somerville/address/4-lake-st/) | 990 ft SW | Alteration or repair | Remove and replace 13 windows. Like sizes and no structural changes. | $22,985 | [B26-001389](https://nearbypermits.com/somerville/permit/B26-001389/) |
| Sep 10, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 610 ft SW | Plumbing | Install a new gas fire Furnace | Not listed | [G26-000416](https://nearbypermits.com/somerville/permit/G26-000416/) |
| Sep 3, 2026 | [28 Bonner Ave](https://nearbypermits.com/somerville/address/28-bonner-ave/) | 780 ft SE | Alteration or repair | Weatherization and air sealing with the Mass Save Program. No structural changes. | $1,886 | [B26-001391](https://nearbypermits.com/somerville/permit/B26-001391/) |
| Sep 2, 2026 | [30 Summit Ave](https://nearbypermits.com/somerville/address/30-summit-ave/) | 780 ft N | Plumbing | Replace existing tub/shower with prefab acrylic base and acrylic walls. Replace valve and fixtures. No Structural Changes | Not listed | [P26-000510](https://nearbypermits.com/somerville/permit/P26-000510/) |
| Aug 28, 2026 | [26 Vinal Ave](https://nearbypermits.com/somerville/address/26-vinal-ave/) | 730 ft NW | Electrical | Basement remodel | $7,500 | [E26-001266](https://nearbypermits.com/somerville/permit/E26-001266/) |
| Aug 27, 2026 | [44 Columbus Ave](https://nearbypermits.com/somerville/address/44-columbus-ave/) | 560 ft SE | Solar | Install Energy Storage System rated at 27kWh outside, interconnected to existing solar panel system | $21,675 | [B26-001233](https://nearbypermits.com/somerville/permit/B26-001233/) |
| Aug 25, 2026 | [33 Vinal Ave](https://nearbypermits.com/somerville/address/33-vinal-ave/) | 730 ft N | Electrical | 6 new family | $82,000 | [E26-000698](https://nearbypermits.com/somerville/permit/E26-000698/) |
| Aug 24, 2026 | [67 Boston St](https://nearbypermits.com/somerville/address/67-boston-st/) | 830 ft NE | Alteration or repair | Install 14 Marvin classic replacement window,energy star,inserts only,no structural work | $18,350 | [B26-001306](https://nearbypermits.com/somerville/permit/B26-001306/) |
| Aug 24, 2026 | [22 Stone Ave](https://nearbypermits.com/somerville/address/22-stone-ave/) | 540 ft S | Alteration or repair | (HOMEOWNER PERMIT) Replace 2 windows in back bedroom and Adding kitchen cabinets and new countertop | $6,000 | [B26-001289](https://nearbypermits.com/somerville/permit/B26-001289/) |
| Aug 19, 2026 | [42 Vinal Ave](https://nearbypermits.com/somerville/address/42-vinal-ave/) | 1,000 ft N | Alteration or repair | Install 5.74 kW panels. Will not exceed roof panel but will add 6" to height. 14 panels total. No ESS / No Structural. | $28,700 | [B26-001025](https://nearbypermits.com/somerville/permit/B26-001025/) |
| Aug 17, 2026 | [44 Columbus Ave](https://nearbypermits.com/somerville/address/44-columbus-ave/) | 560 ft SE | Electrical | Install Energy Storage System rated at 27kWh on exterior, interconnected to existing solar panel system | $15,249 | [E26-001118](https://nearbypermits.com/somerville/permit/E26-001118/) |
| Aug 16, 2026 | [6 Giles Park](https://nearbypermits.com/somerville/address/6-giles-park/) | 280 ft SW | Alteration or repair | Replace all rails on decks from existing PVC to PT lumber, 42" high. | $14,422 | [B26-001209](https://nearbypermits.com/somerville/permit/B26-001209/) |
| Aug 14, 2026 | [67 Walnut St](https://nearbypermits.com/somerville/address/67-walnut-st/) | 960 ft NE | Alteration or repair | install 7 replacement windows. no structural changes. | $22,521 | [B26-000149](https://nearbypermits.com/somerville/permit/B26-000149/) |
| Aug 12, 2026 | [42 Vinal Ave](https://nearbypermits.com/somerville/address/42-vinal-ave/) | 1,000 ft N | Electrical | Install 5.74 kW panels. Will not exceed roof panel but will add 6" to height. 14 panels total. No ESS / No Structural. | $29,000 | [E26-000950](https://nearbypermits.com/somerville/permit/E26-000950/) |
| Aug 7, 2026 | [32 Hamlet St](https://nearbypermits.com/somerville/address/32-hamlet-st/) | 990 ft NE | Plumbing | Install new bathroom & kitchen fixtures only. | Not listed | [P26-000461](https://nearbypermits.com/somerville/permit/P26-000461/) |
| Aug 7, 2026 | [32 Hamlet St](https://nearbypermits.com/somerville/address/32-hamlet-st/) | 990 ft NE | Plumbing | Install New Gas Stove | Not listed | [G26-000365](https://nearbypermits.com/somerville/permit/G26-000365/) |
| Aug 6, 2026 | [59 Bow St](https://nearbypermits.com/somerville/address/59-bow-st/) | 840 ft W | Plumbing | First floor: 1 half bathroom and 3 electric water heaters Second floor: Units 201, 202, 203 and 204 each with 1 Kitchen with ice maker, 1 laundry and 1 full bathroom. Third floor: Units 301, 302, 303 and 304 each with 1 Kitchen with ice maker, 1 laundry and 1 full bathroom. Fourth floor: 401, 402, 4 | Not listed | [P26-000457](https://nearbypermits.com/somerville/permit/P26-000457/) |
| Jul 31, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 780 ft S | Electrical | Bathroom Electrical WORK @ 259 WASHINGTON ST | $1,500 | [E26-001089](https://nearbypermits.com/somerville/permit/E26-001089/) |
| Jul 29, 2026 | [19b Stone Ave](https://nearbypermits.com/somerville/address/19b-stone-ave/) | 650 ft SE | Electrical | Installing Bryant 24K BTU Outdoor Unit, (3) Bryant 6K BTU Indoor Wall Unit, and Bryant 9K BTU Indoor Wall Unit. | $1,500 | [E26-000946](https://nearbypermits.com/somerville/permit/E26-000946/) |
| Jul 29, 2026 | [21 Stone Ave](https://nearbypermits.com/somerville/address/21-stone-ave/) | 650 ft SE | Electrical | Installing Bryant 36K BTU Outdoor Unit, (2) Bryant 6K BTU Indoor Wall Units, Bryant 9K BTU Indoor Wall Units, and Bryant 12K BTU Indoor Wall Units. | $1,500 | [E26-000945](https://nearbypermits.com/somerville/permit/E26-000945/) |
| Jul 29, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 780 ft S | Alteration or repair | @ 259 Washington st in existing commercial space, add new accessible toilet room within existing storage closet. Provide built in seating and furnishings for patron seating. Provide new bar and equipment throughout kitchen, all existing walls, storefront, and. Exterior doors to remain unless otherwi | $25,000 | [B26-000953](https://nearbypermits.com/somerville/permit/B26-000953/) |
| Jul 28, 2026 | [21 Vinal Ave](https://nearbypermits.com/somerville/address/21-vinal-ave/) | 550 ft NW | Electrical | install receptacles, switches and lighting | $1,600 | [E26-001093](https://nearbypermits.com/somerville/permit/E26-001093/) |
| Jul 25, 2026 | [15 Homer Sq](https://nearbypermits.com/somerville/address/15-homer-sq/) | 780 ft SE | Roofing | Install new roofing | $14,600 | [B26-001094](https://nearbypermits.com/somerville/permit/B26-001094/) |
| Jul 24, 2026 | [24 Aldersey St](https://nearbypermits.com/somerville/address/24-aldersey-st/) | 620 ft NW | Electrical | Replace existing receptacles with tamper-resistant devices. Coordinate with Eversource and request the installation of two meters. Relocate the feeders serving the two basement apartments from the public panel and reconnect them to their designated existing service disconnects. | $3,000 | [E26-001078](https://nearbypermits.com/somerville/permit/E26-001078/) |
| Jul 21, 2026 | [8 Pleasant Ave](https://nearbypermits.com/somerville/address/8-pleasant-ave/) | 830 ft N | Plumbing | 3 kitchens 3 bathrooms 3 laundry | Not listed | [P25-000449](https://nearbypermits.com/somerville/permit/P25-000449/) |
| Jul 21, 2026 | [8 Pleasant Ave](https://nearbypermits.com/somerville/address/8-pleasant-ave/) | 830 ft N | Plumbing | gas stove | Not listed | [G25-000307](https://nearbypermits.com/somerville/permit/G25-000307/) |
| Jul 21, 2026 | [3 Lawson Terr](https://nearbypermits.com/somerville/address/3-lawson-terr/) | 850 ft NW | Roofing | strip and reroof approximately 1,100 square feet | $16,640 | [B26-001053](https://nearbypermits.com/somerville/permit/B26-001053/) |
| Jul 16, 2026 | [21 Vinal Ave](https://nearbypermits.com/somerville/address/21-vinal-ave/) | 550 ft NW | Alteration or repair | (HOMEOWNER PERMIT) Add one interior wall, add cased opening to existing wall, replace existing door, install new closet door, install trifold glass door, refinish floors, repaint | $17,650 | [B26-000950](https://nearbypermits.com/somerville/permit/B26-000950/) |
| Jul 14, 2026 | [28 Bonner Ave](https://nearbypermits.com/somerville/address/28-bonner-ave/) | 780 ft SE | Alteration or repair | Installation of (10) Double Hung Window Inserts, (1) Casement Window Insert, (5) Glider Window Inserts and (1) Full Frame, Double Hung Window. No Structural Changes | $53,248 | [B26-000994](https://nearbypermits.com/somerville/permit/B26-000994/) |
| Jul 8, 2026 | [17 Bow St Pl](https://nearbypermits.com/somerville/address/17-bow-st-pl/) | 810 ft W | Alteration or repair | Insulation work as part of the MASS Save program. Only working on unit 1. | $2,000 | [B26-000955](https://nearbypermits.com/somerville/permit/B26-000955/) |
| Jul 8, 2026 | [24 Warren Ave](https://nearbypermits.com/somerville/address/24-warren-ave/) | 260 ft SE | Alteration or repair | Replace Garage rubber roof | $4,800 | [B26-000934](https://nearbypermits.com/somerville/permit/B26-000934/) |
| Jul 7, 2026 | [32 Hamlet St](https://nearbypermits.com/somerville/address/32-hamlet-st/) | 990 ft NE | Electrical | Second floor remodel | $18,000 | [E26-000935](https://nearbypermits.com/somerville/permit/E26-000935/) |
| Jul 7, 2026 | [29 Summit Ave](https://nearbypermits.com/somerville/address/29-summit-ave/) | 870 ft N | Electrical | 1 Bathroom electrical, Living Lights, dining lights | $1,500 | [E26-000900](https://nearbypermits.com/somerville/permit/E26-000900/) |
| Jul 7, 2026 | [17 Bow St](https://nearbypermits.com/somerville/address/17-bow-st/) | 390 ft SW | Electrical | Replacing recessed light in unit 12 and 21 due to water damage from weather heater in unit 34, checking for water damage and replacing any devices due to water damage. | $2,000 | [E25-000791](https://nearbypermits.com/somerville/permit/E25-000791/) |
| Jul 2, 2026 | [29 Summit Ave](https://nearbypermits.com/somerville/address/29-summit-ave/) | 870 ft N | Plumbing | 1 half bath on first floor | Not listed | [P26-000382](https://nearbypermits.com/somerville/permit/P26-000382/) |
| Jun 30, 2026 | [17 Aldersey St](https://nearbypermits.com/somerville/address/17-aldersey-st/) | 620 ft N | Electrical | installation of new complete 800 amp service on front house with 9 meters total and 1 200 amp service on back house with installation of transformer from Eversource. | $30,000 | [E26-000419](https://nearbypermits.com/somerville/permit/E26-000419/) |
| Jun 29, 2026 | [23 Putnam St](https://nearbypermits.com/somerville/address/23-putnam-st/) | 920 ft NW | Roofing | strip and reroof approximately 2,200 square feet | $24,460 | [B26-000839](https://nearbypermits.com/somerville/permit/B26-000839/) |
| Jun 24, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 610 ft SW | Mechanical (HVAC) | Installation of central heating and cooling with gas furnace and ac | $15,000 | [SM26-000082](https://nearbypermits.com/somerville/permit/SM26-000082/) |
| Jun 23, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 610 ft SW | Electrical | Move exsisting smokes, pull stations and horns out to accommodate new framing | $500 | [E26-000875](https://nearbypermits.com/somerville/permit/E26-000875/) |
| Jun 23, 2026 | [32 Hamlet St](https://nearbypermits.com/somerville/address/32-hamlet-st/) | 990 ft NE | Alteration or repair | Renovate second floor unti will remove the dining room and living room ceiling, The dining room will and bedroom wall will be removed, Two 12-foot LVLs will be installed, There will go from the second floor to first floor to the basement, The space will be opened up, The dining room and bedroom wall | $84,975 | [B26-000806](https://nearbypermits.com/somerville/permit/B26-000806/) |
| Jun 16, 2026 | [29 Summit Ave](https://nearbypermits.com/somerville/address/29-summit-ave/) | 870 ft N | Alteration or repair | Remodel first floor to acommodate a half bath. Exhaust fan to exterior, plumb and electrical. | $18,600 | [B26-000779](https://nearbypermits.com/somerville/permit/B26-000779/) |
| Jun 11, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 610 ft SW | Electrical | Wire room for lights power and heat B26-000400 | $25,000 | [E26-000764](https://nearbypermits.com/somerville/permit/E26-000764/) |
| Jun 10, 2026 | [4 Putnam St](https://nearbypermits.com/somerville/address/4-putnam-st/) | 920 ft NW | Alteration or repair | Bathroom renovation, existing footprint to stay the same | $28,900 | [B26-000767](https://nearbypermits.com/somerville/permit/B26-000767/) |
| Jun 9, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 780 ft S | Electrical | Install pendant lights, ceiling fan, receptacle outlets and water heater. | $6,500 | [E26-000773](https://nearbypermits.com/somerville/permit/E26-000773/) |
| Jun 9, 2026 | [5 Homer Sq](https://nearbypermits.com/somerville/address/5-homer-sq/) | 630 ft SE | Electrical | Support service for Siding company | $500 | [E26-000661](https://nearbypermits.com/somerville/permit/E26-000661/) |
| Jun 9, 2026 | [33 Columbus Ave](https://nearbypermits.com/somerville/address/33-columbus-ave/) | 790 ft SE | Alteration or repair | Residential weatherization/air sealing. No structural changes. ( 860845) | $2,000 | [B26-000586](https://nearbypermits.com/somerville/permit/B26-000586/) |
| Jun 5, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 610 ft SW | Plumbing | Remodel a existing Liquor store | Not listed | [P26-000322](https://nearbypermits.com/somerville/permit/P26-000322/) |
| Jun 5, 2026 | [4 Putnam St](https://nearbypermits.com/somerville/address/4-putnam-st/) | 920 ft NW | Plumbing | Bathroom remodel | Not listed | [P26-000321](https://nearbypermits.com/somerville/permit/P26-000321/) |
| Jun 5, 2026 | [16 Summit Ave](https://nearbypermits.com/somerville/address/16-summit-ave/) | 610 ft N | Alteration or repair | Minor renovation to the interior only. Remove existing kitchen cabinetry and replace with new in its entirety. Add two new bathrooms one on second floor and one in the basement. Renovate existing bathroom on 1st floor. Install new wet bar in basement level. Remove existing room ACT ceiling and strap | $92,000 | [B26-000403](https://nearbypermits.com/somerville/permit/B26-000403/) |
| Jun 2, 2026 | [17 Bonner Ave](https://nearbypermits.com/somerville/address/17-bonner-ave/) | 940 ft SE | Electrical | Rooftop solar 12 panels 4.92 kwdc no ESS | $8,768 | [E26-000777](https://nearbypermits.com/somerville/permit/E26-000777/) |
| Jun 2, 2026 | [26 Summer St](https://nearbypermits.com/somerville/address/26-summer-st/) | 760 ft W | Alteration or repair | Interior demolition. All cabinets, fixtures, finishes, sheetrock. | $50,000 | [B26-000757](https://nearbypermits.com/somerville/permit/B26-000757/) |
| Jun 2, 2026 | [1 Bow St](https://nearbypermits.com/somerville/address/1-bow-st/) | 430 ft S | Alteration or repair | rebuilding a brick wall that is in bad condition at left side rear of building Install all the necessary footing and concrete as per engineer drawings. Install all temporally shoring as per engineer drawings. | $173,550 | [B26-000692](https://nearbypermits.com/somerville/permit/B26-000692/) |
| Jun 1, 2026 | [37 Columbus Ave](https://nearbypermits.com/somerville/address/37-columbus-ave/) | 710 ft SE | Demolition | Demolish existing three-story wood deck and construct new three-story pressure-treated wood deck in same footprint, layout, and dimensions | $27,000 | [B26-000638](https://nearbypermits.com/somerville/permit/B26-000638/) |
| May 20, 2026 | [22 Thorpe St](https://nearbypermits.com/somerville/address/22-thorpe-st/) | 940 ft NE | Roofing | Remove all roofing materials and install premium Owens Corning roofing materials. Remove all debris. | $21,858 | [B26-000708](https://nearbypermits.com/somerville/permit/B26-000708/) |
| May 19, 2026 | [9 Hillside Park](https://nearbypermits.com/somerville/address/9-hillside-park/) | 300 ft NW | Electrical | Rewire 4 units and upgrade service to 400 amps B25-000638 | $65,000 | [E26-000625](https://nearbypermits.com/somerville/permit/E26-000625/) |
| May 19, 2026 | [16 Homer Sq](https://nearbypermits.com/somerville/address/16-homer-sq/) | 800 ft SE | Electrical | Electrical service upgrade from existing 100A to new 200A service, including new panel upgrades as required. Install (1) 60A circuit for EV charger. | $4,800 | [E26-000605](https://nearbypermits.com/somerville/permit/E26-000605/) |
| May 19, 2026 | [24 Summer St](https://nearbypermits.com/somerville/address/24-summer-st/) | 750 ft W | Alteration or repair | Refurbish existing front porch with traditional materials to comply with historic requirements, without porch size alteration | $7,500 | [B26-000472](https://nearbypermits.com/somerville/permit/B26-000472/) |
| May 19, 2026 | [9 Hillside Park](https://nearbypermits.com/somerville/address/9-hillside-park/) | 300 ft NW | Alteration or repair | Interior and exterior gut renovation based on attached plans | $415,000 | [B25-000638](https://nearbypermits.com/somerville/permit/B25-000638/) |
| May 14, 2026 | [12 Putnam St](https://nearbypermits.com/somerville/address/12-putnam-st/) | 970 ft NW | Electrical | rewire wall oven with appropriately sized wire | $2,000 | [E26-000680](https://nearbypermits.com/somerville/permit/E26-000680/) |
| May 14, 2026 | [12 Putnam St](https://nearbypermits.com/somerville/address/12-putnam-st/) | 970 ft NW | Electrical | Replace wire for wall oven with appropriate size | $2,000 | [E26-000679](https://nearbypermits.com/somerville/permit/E26-000679/) |
| May 13, 2026 | [19 Bow St](https://nearbypermits.com/somerville/address/19-bow-st/) | 360 ft SW | Alteration or repair | Service Package - EPDM Repairs Parapet wall roof improvement - Install new 1/4" Tapered insulation (diverting rain water to the roof) over parapet walls over roof left and right sides - Approx. 300sqft or 3sq + Custom made drip edge (Gravel stop style - 8" wide); Apply 6" cover tape over roof front  | $8,152 | [B26-000605](https://nearbypermits.com/somerville/permit/B26-000605/) |
| May 13, 2026 | [5 Homer Sq](https://nearbypermits.com/somerville/address/5-homer-sq/) | 630 ft SE | Alteration or repair | Emergency roof and siding replacement | $30,000 | [B26-000589](https://nearbypermits.com/somerville/permit/B26-000589/) |
| May 12, 2026 | [1 Bow Market Way](https://nearbypermits.com/somerville/address/1-bow-market-way/) | 590 ft SW | Electrical | install fire radio | $594 | [E26-000516](https://nearbypermits.com/somerville/permit/E26-000516/) |
| May 7, 2026 | [24 Thorpe St](https://nearbypermits.com/somerville/address/24-thorpe-st/) | 910 ft NE | Electrical | Scope of Work: Rewire front entry (foyer) areas of a two-family dwelling. Install new lighting and receptacles. Details: Install (4) recessed lights (interior) Install (2) receptacle outlets Install (2) exterior recessed light fixtures | $2,500 | [E26-000640](https://nearbypermits.com/somerville/permit/E26-000640/) |
| May 6, 2026 | [300 Somerville Ave](https://nearbypermits.com/somerville/address/300-somerville-ave/) | 770 ft SW | New building | buildout restaurant @ 302 Somerville Ave | $200,000 | [B25-000859](https://nearbypermits.com/somerville/permit/B25-000859/) |
| May 4, 2026 | [33 Bow St](https://nearbypermits.com/somerville/address/33-bow-st/) | 370 ft W | Electrical | Installation of (2) Annunciator Panels | $3,000 | [E26-000588](https://nearbypermits.com/somerville/permit/E26-000588/) |
| May 1, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 780 ft S | Plumbing | Furnish and Install 1 new toilet and 1 new lavatory sink Juliet Social Club @ 257 Washington St | Not listed | [P26-000260](https://nearbypermits.com/somerville/permit/P26-000260/) |

### Farther (1,000 ft to ¼ mi), 43 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | [286 Somerville Ave](https://nearbypermits.com/somerville/address/286-somerville-ave/) | 0.23 mi S | Sign | Install: (2) New Face-Lit Channel Letters - "DUNKIN'" (1A.1).(1) Refurbished Ground Sign - "DUNKIN'" (3A.1) | Not listed | [B26-001387](https://nearbypermits.com/somerville/permit/B26-001387/) |
| Sep 29, 2026 | [8 Highland Ave](https://nearbypermits.com/somerville/address/8-highland-ave/) | 0.24 mi NE | Electrical | Install cellular communicator | $250 | [E26-001418](https://nearbypermits.com/somerville/permit/E26-001418/) |
| Sep 23, 2026 | [44 Highland Ave](https://nearbypermits.com/somerville/address/44-highland-ave/) | 0.24 mi N | Alteration or repair | Install 8 Harvey classic replacement window,energy star,inserts only,no structural work | $6,992 | [B26-001069](https://nearbypermits.com/somerville/permit/B26-001069/) |
| Sep 17, 2026 | [397 Somerville Ave](https://nearbypermits.com/somerville/address/397-somerville-ave/) | 0.23 mi W | Alteration or repair | Interior remodel consisting of finish upgrades only, with no changes to the existing interior wall layout or configuration. The project also includes a change of use from a Place of Worship to a Retail use. No structural modifications or changes to the existing building footprint are proposed. | $2,500 | [B26-001130](https://nearbypermits.com/somerville/permit/B26-001130/) |
| Sep 15, 2026 | [286 Somerville Ave](https://nearbypermits.com/somerville/address/286-somerville-ave/) | 0.23 mi S | Electrical | Disconnect and reconnect front line wiring for newly added bookcase. Wire new Dunkin signage going in place of existing Dunkin Donut signage. | $4,500 | [E26-001349](https://nearbypermits.com/somerville/permit/E26-001349/) |
| Sep 10, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 0.23 mi S | New building | construct a podium style 6 story building with a parking level below the building. This low-rise complies with the 9th edition of the Ma building code. This mixed use (general building) structure's primary use is multi-family residential 43 units. (R-2). Permit tranferred to new contractor 8/27/25 | $12,640,000 | [B24-002327](https://nearbypermits.com/somerville/permit/B24-002327/) |
| Aug 27, 2026 | [9 Prospect Hill Ave](https://nearbypermits.com/somerville/address/9-prospect-hill-ave/) | 0.25 mi E | Electrical | Installation and wiring of ductless system consisting of one condenser and four mini split heads. | $21,733 | [B26-001264](https://nearbypermits.com/somerville/permit/B26-001264/) |
| Aug 18, 2026 | [9 Prospect Hill Ave](https://nearbypermits.com/somerville/address/9-prospect-hill-ave/) | 0.25 mi E | Electrical | Installation and wiring of ductless system consisting of one condenser and four mini split heads. | $5,433 | [E26-001152](https://nearbypermits.com/somerville/permit/E26-001152/) |
| Aug 20, 2026 | [17 Carlton St](https://nearbypermits.com/somerville/address/17-carlton-st/) | 0.23 mi SW | Plumbing | Install plumbing for 2 units, 2 kitchens, 2 laundries, 5 full bathrooms, 2 half bathrooms, sewer ejector in basement, 2 electric water heaters. | Not listed | [P26-000483](https://nearbypermits.com/somerville/permit/P26-000483/) |
| Aug 19, 2026 | [18 Columbus Ave](https://nearbypermits.com/somerville/address/18-columbus-ave/) | 0.20 mi SE | Electrical | 100 to 400 amp service Upgrade. Installation of outlets in home per customer requested location. | $12,000 | [E26-001164](https://nearbypermits.com/somerville/permit/E26-001164/) |
| Aug 17, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.24 mi SW | Alteration or repair | Remove (x3) existing gas fired boilers and replace with (x3) new ones. | $390,367 | [B26-001250](https://nearbypermits.com/somerville/permit/B26-001250/) |
| Aug 10, 2026 | [17 Carlton St](https://nearbypermits.com/somerville/address/17-carlton-st/) | 0.23 mi SW | Electrical | Demolition/make safe and UFER ground | $1,200 | [E26-001114](https://nearbypermits.com/somerville/permit/E26-001114/) |
| Aug 6, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.24 mi SW | Electrical | Associated electrical work and fire alarm with boiler replacement | $40,000 | [E26-001148](https://nearbypermits.com/somerville/permit/E26-001148/) |
| Aug 5, 2026 | [14 Carlton St](https://nearbypermits.com/somerville/address/14-carlton-st/) | 0.21 mi SW | Alteration or repair | Remove and rebuild existing roof deck in the same size and layout. Install new pressure-treated framing, double 2x10 beam, 2x8 PT joists with galvanized hangers, Trex Select composite decking, and Trex Select black aluminum railings. Existing support posts to remain and be inspected for code complia | $21,900 | [B26-000959](https://nearbypermits.com/somerville/permit/B26-000959/) |
| Aug 5, 2026 | [17 Carlton St](https://nearbypermits.com/somerville/address/17-carlton-st/) | 0.23 mi SW | Alteration or repair | Complete renovation reconstruction of existing residential building. Scope includes interior demolition, foundation and structural work, framing medications, roofing, exterior siding, new windows, new exterior and interior doors, new kitchens, new bathrooms, tile installation, plumbing, electrical.  | $700,000 | [B26-000935](https://nearbypermits.com/somerville/permit/B26-000935/) |
| Aug 4, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.24 mi SW | Plumbing | Remove (x3) existing gas fired boilers and replace with (x3) new Lochinvar Condensing boilers, each with 1.44 million BTU Output ones. | Not listed | [P26-000453](https://nearbypermits.com/somerville/permit/P26-000453/) |
| Aug 4, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.24 mi SW | Plumbing | Remove (x3) existing gas fired boilers and replace with (x3) new Lochinvar Condensing boilers, each with 1.44 million BTU Output ones. | Not listed | [G26-000362](https://nearbypermits.com/somerville/permit/G26-000362/) |
| Aug 4, 2026 | [9 Prospect Hill Ave](https://nearbypermits.com/somerville/address/9-prospect-hill-ave/) | 0.25 mi E | Plumbing | bathroom and kitchen renovation | Not listed | [P26-000448](https://nearbypermits.com/somerville/permit/P26-000448/) |
| Jul 31, 2026 | [9 Prospect Hill Ave](https://nearbypermits.com/somerville/address/9-prospect-hill-ave/) | 0.25 mi E | Electrical | Kitchen renovation with two bathrooms being renovated as well | $5,600 | [E26-001109](https://nearbypermits.com/somerville/permit/E26-001109/) |
| Jul 29, 2026 | [15 Grand View Ave](https://nearbypermits.com/somerville/address/15-grand-view-ave/) | 0.23 mi N | Roofing | Remove and replace the existing mansard shingle roof (up to two layers). Inspect roof sheathing and replace damaged wood as needed. Install new ice & water shield, synthetic underlayment, drip edge, CertainTeed SwiftStart starter shingles, CertainTeed Landmark architectural shingles, and Shadow Ridg | $12,350 | [B26-001113](https://nearbypermits.com/somerville/permit/B26-001113/) |
| Jul 28, 2026 | [40 Highland Ave](https://nearbypermits.com/somerville/address/40-highland-ave/) | 0.24 mi N | Electrical | Wiring replacement for AC (Coil / Condenser) and gas Furnace | $1,322 | [E26-001062](https://nearbypermits.com/somerville/permit/E26-001062/) |
| Jul 22, 2026 | [6 Highland Ave](https://nearbypermits.com/somerville/address/6-highland-ave/) | 0.24 mi NE | Plumbing | cap dryer gas | Not listed | [G26-000339](https://nearbypermits.com/somerville/permit/G26-000339/) |
| Jul 20, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 0.23 mi S | Electrical | New construction of 43 units, common areas and parking garage which includes installation of underground for 1600A service, subpanels, load centers, and generator as well as lighting, general power, fire alarm and line voltage power to HVAC equipment as specified. | $1,425,000 | [E26-000999](https://nearbypermits.com/somerville/permit/E26-000999/) |
| Jul 7, 2026 | [285 Washington St](https://nearbypermits.com/somerville/address/285-washington-st/) | 0.20 mi SW | Roofing | Roof Recover | $39,693 | [B26-000880](https://nearbypermits.com/somerville/permit/B26-000880/) |
| Jul 6, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 0.23 mi S | Electrical | Installation of underground conduits for new construction building with 43 units and generator. | $21,000 | [E26-000931](https://nearbypermits.com/somerville/permit/E26-000931/) |
| Jun 29, 2026 | [9 Carlton St](https://nearbypermits.com/somerville/address/9-carlton-st/) | 0.22 mi W | Electrical | upgrade service due to insurance requirements, moving service to other side of property so there is clearances | $6,500 | [E26-000883](https://nearbypermits.com/somerville/permit/E26-000883/) |
| Jun 23, 2026 | [49 Putnam St](https://nearbypermits.com/somerville/address/49-putnam-st/) | 0.22 mi N | Electrical | remove and reinstall existing smoke detectors (2) due to repairs in the front foyer E26-000211 | $900 | [E26-000877](https://nearbypermits.com/somerville/permit/E26-000877/) |
| Jun 22, 2026 | [43 Boston St](https://nearbypermits.com/somerville/address/43-boston-st/) | 0.22 mi E | Electrical | Install new low voltage fire alarm | $8,000 | [E26-000887](https://nearbypermits.com/somerville/permit/E26-000887/) |
| Jun 21, 2026 | [397 Somerville Ave](https://nearbypermits.com/somerville/address/397-somerville-ave/) | 0.23 mi W | Electrical | CORRECT VIOLATION FILE #26-013922 Cut and cap water to sink. Disconnect and remove existing electrical service/feed to stove at electrical panel to remove illegal apartment | $800 | [B26-000802](https://nearbypermits.com/somerville/permit/B26-000802/) |
| Jun 17, 2026 | [20 Prospect Hill Ave](https://nearbypermits.com/somerville/address/20-prospect-hill-ave/) | 0.22 mi E | Alteration or repair | air sealing and insulation through the Mass Save program | $1,213 | [B26-000718](https://nearbypermits.com/somerville/permit/B26-000718/) |
| Jun 16, 2026 | [397 Somerville Ave](https://nearbypermits.com/somerville/address/397-somerville-ave/) | 0.23 mi W | Plumbing | Cut & Cap kitchen sink in apartment | Not listed | [P26-000349](https://nearbypermits.com/somerville/permit/P26-000349/) |
| Jun 16, 2026 | [223 Washington St](https://nearbypermits.com/somerville/address/223-washington-st/) | 0.23 mi SE | Fence, wall or deck | Temporary interior structure | $174,557 | [B24-000225](https://nearbypermits.com/somerville/permit/B24-000225/) |
| Jun 16, 2026 | [19r Prospect Hill Ave](https://nearbypermits.com/somerville/address/19r-prospect-hill-ave/) | 0.20 mi E | Alteration or repair | Insulation work as part of the mass save program | $2,400 | [B23-001976](https://nearbypermits.com/somerville/permit/B23-001976/) |
| Jun 11, 2026 | [397 Somerville Ave](https://nearbypermits.com/somerville/address/397-somerville-ave/) | 0.23 mi W | Electrical | Disconnect electricity from stove to panel in illegal apartment | $800 | [E26-000843](https://nearbypermits.com/somerville/permit/E26-000843/) |
| Jun 11, 2026 | [9 Prospect Hill Ave](https://nearbypermits.com/somerville/address/9-prospect-hill-ave/) | 0.25 mi E | Alteration or repair | Cosmetic renovation to include: Replacing counters in kitchen Fixture replacement in existing full bath Window replacement throughout house Adding half bath (as indicated on proposed plans) Sanding/refinishing floors Painting unit | $40,000 | [B26-000783](https://nearbypermits.com/somerville/permit/B26-000783/) |
| Jun 10, 2026 | [55 Putnam St](https://nearbypermits.com/somerville/address/55-putnam-st/) | 0.23 mi N | Electrical | 400A service upgrade | $3,000 | [E26-000834](https://nearbypermits.com/somerville/permit/E26-000834/) |
| Jun 8, 2026 | [43 Boston St](https://nearbypermits.com/somerville/address/43-boston-st/) | 0.22 mi E | Mechanical (HVAC) | Install 3 HVAC systems. 1 located in the basement with 2 zones, 1 located on the 2nd floor, and 1 located on the 3rd floor. | $49,000 | [SM26-000093](https://nearbypermits.com/somerville/permit/SM26-000093/) |
| Jun 5, 2026 | [34 Putnam St](https://nearbypermits.com/somerville/address/34-putnam-st/) | 0.21 mi NW | Plumbing | 1/2 bathroom on 2nd floor | Not listed | [P26-000327](https://nearbypermits.com/somerville/permit/P26-000327/) |
| Jun 2, 2026 | [20 Prospect Hill Ave](https://nearbypermits.com/somerville/address/20-prospect-hill-ave/) | 0.22 mi E | Other | Install two condensers and four mini split heads | $27,632 | [B26-000655](https://nearbypermits.com/somerville/permit/B26-000655/) |
| May 13, 2026 | [3 Emerson St](https://nearbypermits.com/somerville/address/3-emerson-st/) | 0.24 mi S | Alteration or repair | Replace existing ducted AC | $14,250 | [B26-000668](https://nearbypermits.com/somerville/permit/B26-000668/) |
| May 6, 2026 | [20 Prospect Hill Ave](https://nearbypermits.com/somerville/address/20-prospect-hill-ave/) | 0.22 mi E | Electrical | Installation and wiring of ductless system consisting of two condensers and four mini-split heads | $6,908 | [E26-000624](https://nearbypermits.com/somerville/permit/E26-000624/) |
| May 4, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 0.23 mi S | Plumbing | Installation of various plumbing fixtures and piping at new multi residential building | Not listed | [P26-000253](https://nearbypermits.com/somerville/permit/P26-000253/) |
| May 1, 2026 | [34 Putnam St](https://nearbypermits.com/somerville/address/34-putnam-st/) | 0.21 mi NW | Alteration or repair | 5 Windows replacement, 2 interior door replacement, plaster ceilings | $8,000 | [B26-000593](https://nearbypermits.com/somerville/permit/B26-000593/) |

## More on this street

Other addresses on Walnut St with permits, nearest house number first:

- [25 Walnut St](https://nearbypermits.com/somerville/address/25-walnut-st/): newest permit Dec 17, 2024
- [27 Walnut St](https://nearbypermits.com/somerville/address/27-walnut-st/): newest permit Dec 18, 2025
- [30 Walnut St](https://nearbypermits.com/somerville/address/30-walnut-st/): newest permit Jul 27, 2026
- [42 Walnut St](https://nearbypermits.com/somerville/address/42-walnut-st/): newest permit Apr 14, 2025
- [56 Walnut St](https://nearbypermits.com/somerville/address/56-walnut-st/): newest permit Sep 2, 2025
- [61 Walnut St](https://nearbypermits.com/somerville/address/61-walnut-st/): newest permit Aug 13, 2025
- [67 Walnut St](https://nearbypermits.com/somerville/address/67-walnut-st/): newest permit Aug 14, 2026
- [69 Walnut St](https://nearbypermits.com/somerville/address/69-walnut-st/): newest permit Apr 23, 2026
- [109 Walnut St](https://nearbypermits.com/somerville/address/109-walnut-st/): newest permit Dec 27, 2024
- [138 Walnut St](https://nearbypermits.com/somerville/address/138-walnut-st/): newest permit Aug 18, 2025

---
Source: Somerville Inspectional Services Division permit data (https://data.somervillema.gov/d/nneb-s3f7), SomerStat, City of Somerville, ODbL 1.0 (https://opendatacommons.org/licenses/odbl/1-0/). Checked 2026-10-06 23:29 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Contains information from Applications for Permits and Licenses (SomerStat, City of Somerville), which is made available here under the Open Database License (ODbL). Database: https://data.somervillema.gov/d/nneb-s3f7 License: https://opendatacommons.org/licenses/odbl/1-0/

Map, all 6 permits at this address and 131 nearby: https://nearbypermits.com/somerville/address/21-walnut-st/