# Building permits at 20 Prospect St, Somerville, MA

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

One permit on record here. The newest, Aug 17: Installing 3 new breakrooms @ 50 Prospect St. Within a quarter mile, the city has issued 108 more permits (106 projects) since May 1. Seven are for new buildings, the nearest 420 ft away.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Aug 17, 2026 | Plumbing | Installing 3 new breakrooms @ 50 Prospect St | Not listed | [P26-000474](https://nearbypermits.com/somerville/permit/P26-000474/) |

## Within ¼ mi since May 1, 2026

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

### Next door (under 250 ft), 4 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | [286 Somerville Ave](https://nearbypermits.com/somerville/address/286-somerville-ave/) | 180 ft NW | 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 15, 2026 | [286 Somerville Ave](https://nearbypermits.com/somerville/address/286-somerville-ave/) | 180 ft NW | 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/) |
| May 19, 2026 | [35 Prospect St](https://nearbypermits.com/somerville/address/35-prospect-st/) | 150 ft W | Roofing | Remove all roofing materials and install.060 EPDM rubber roofing materials. Remove all debris. | $44,211 | [B26-000685](https://nearbypermits.com/somerville/permit/B26-000685/) |
| May 13, 2026 | [3 Emerson St](https://nearbypermits.com/somerville/address/3-emerson-st/) | 220 ft W | Alteration or repair | Replace existing ducted AC | $14,250 | [B26-000668](https://nearbypermits.com/somerville/permit/B26-000668/) |

### This block (250 to 1,000 ft), 51 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | [40 Union Sq](https://nearbypermits.com/somerville/address/40-union-sq/) | 920 ft NW | 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/) | 890 ft N | 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/) |
| Sep 24, 2026 | [26r Clark St](https://nearbypermits.com/somerville/address/26r-clark-st/) | 870 ft W | Plumbing | Underground piping, and finish plumbing | Not listed | [P26-000557](https://nearbypermits.com/somerville/permit/P26-000557/) |
| Sep 24, 2026 | [69 Prospect St](https://nearbypermits.com/somerville/address/69-prospect-st/) | 780 ft SW | Plumbing | replace stove | Not listed | [G26-000429](https://nearbypermits.com/somerville/permit/G26-000429/) |
| Sep 23, 2026 | [69 Prospect St](https://nearbypermits.com/somerville/address/69-prospect-st/) | 780 ft SW | Plumbing | remodel 1st floor kitchen and bath | Not listed | [P26-000551](https://nearbypermits.com/somerville/permit/P26-000551/) |
| Sep 22, 2026 | [32 Stone Ave](https://nearbypermits.com/somerville/address/32-stone-ave/) | 910 ft N | 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 21, 2026 | [32 Stone Ave](https://nearbypermits.com/somerville/address/32-stone-ave/) | 910 ft N | 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/) | 910 ft N | Plumbing | Renovation, 1st and 2nd fl kitchen stove. | Not listed | [G26-000426](https://nearbypermits.com/somerville/permit/G26-000426/) |
| Sep 17, 2026 | [69 Prospect St](https://nearbypermits.com/somerville/address/69-prospect-st/) | 780 ft SW | Electrical | Rewire of kitchen and bath 1st floor unit | $7,800 | [E26-001360](https://nearbypermits.com/somerville/permit/E26-001360/) |
| Sep 15, 2026 | [32 Webster Ave](https://nearbypermits.com/somerville/address/32-webster-ave/) | 380 ft W | Demolition | Demolition of existing 2 story house DEMO ON OR AFTER SEPTEMBER 22, 2026 (EMERGENCY DEMO) | $49,950 | [D26-000002](https://nearbypermits.com/somerville/permit/D26-000002/) |
| Sep 12, 2026 | [69 Prospect St](https://nearbypermits.com/somerville/address/69-prospect-st/) | 780 ft SW | Alteration or repair | kitchen and bath remodel | $72,500 | [B26-001331](https://nearbypermits.com/somerville/permit/B26-001331/) |
| Sep 10, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 420 ft W | 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/) |
| Sep 3, 2026 | [28 Bonner Ave](https://nearbypermits.com/somerville/address/28-bonner-ave/) | 880 ft N | 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 | [230 Somerville Ave](https://nearbypermits.com/somerville/address/230-somerville-ave/) | 620 ft E | Electrical | Wiring for the commercial kitchen hood ventilation motors including power outlets, lighting & control | $9,380 | [E26-001301](https://nearbypermits.com/somerville/permit/E26-001301/) |
| Aug 24, 2026 | [22 Stone Ave](https://nearbypermits.com/somerville/address/22-stone-ave/) | 860 ft N | 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 | [18 Columbus Ave](https://nearbypermits.com/somerville/address/18-columbus-ave/) | 750 ft NE | 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 13, 2026 | [26 Clark St](https://nearbypermits.com/somerville/address/26-clark-st/) | 870 ft W | Electrical | 200 amp service for ADU | $7,000 | [E26-001099](https://nearbypermits.com/somerville/permit/E26-001099/) |
| Aug 10, 2026 | [69 Prospect St](https://nearbypermits.com/somerville/address/69-prospect-st/) | 780 ft SW | Alteration or repair | Interior demo of kitchen & bath | $3,200 | [B26-001139](https://nearbypermits.com/somerville/permit/B26-001139/) |
| Aug 4, 2026 | [7 Joseph St](https://nearbypermits.com/somerville/address/7-joseph-st/) | 850 ft W | Plumbing | replace existing tub valve with new tub valve | Not listed | [P26-000451](https://nearbypermits.com/somerville/permit/P26-000451/) |
| Jul 31, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 870 ft NW | 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/) | 750 ft N | 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/) | 750 ft N | 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/) | 870 ft NW | 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 | [26 Clark St](https://nearbypermits.com/somerville/address/26-clark-st/) | 870 ft W | Electrical | Wire new construction ADU | $7,000 | [E26-001082](https://nearbypermits.com/somerville/permit/E26-001082/) |
| Jul 25, 2026 | [15 Homer Sq](https://nearbypermits.com/somerville/address/15-homer-sq/) | 700 ft N | Roofing | Install new roofing | $14,600 | [B26-001094](https://nearbypermits.com/somerville/permit/B26-001094/) |
| Jul 20, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 420 ft W | 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 15, 2026 | [9 Allen St](https://nearbypermits.com/somerville/address/9-allen-st/) | 280 ft E | Electrical | Temp Electrical Service Construction Site @ Corner of Allen St and Charlestown St | $500 | [E26-001005](https://nearbypermits.com/somerville/permit/E26-001005/) |
| Jul 14, 2026 | [28 Bonner Ave](https://nearbypermits.com/somerville/address/28-bonner-ave/) | 880 ft N | 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 14, 2026 | [18 Linden St](https://nearbypermits.com/somerville/address/18-linden-st/) | 550 ft E | Roofing | Strip existing roofing (15 sq) layer with proper tools, remove existing flashing, underlayment, boot pipes and remove debris down using tarp along the house to protect house perimeter and client belongs. Reroof with new underlayment and new asphalt shingles following State Building Code and Manufact | $7,960 | [B26-000745](https://nearbypermits.com/somerville/permit/B26-000745/) |
| Jul 13, 2026 | [11 Linden St](https://nearbypermits.com/somerville/address/11-linden-st/) | 440 ft E | Roofing | Reroof: Tear off existing underlayment, ice and water, shingle, drip edge, flashing, and trim. Install new underlayment, ice and water, shingle, drip edge, flashing, and trim. No structural changes. | $28,536 | [B26-000977](https://nearbypermits.com/somerville/permit/B26-000977/) |
| Jul 6, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 420 ft W | 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 22, 2026 | [18 Linden St](https://nearbypermits.com/somerville/address/18-linden-st/) | 550 ft E | Electrical | Rooftop solar 19 panels 7.79 kwdc 13.5kw energy storage system to be installed on exterior wall | $98,637 | [E26-000828](https://nearbypermits.com/somerville/permit/E26-000828/) |
| Jun 18, 2026 | [18 Linden St](https://nearbypermits.com/somerville/address/18-linden-st/) | 550 ft E | Solar | Rooftop solar 19 panels 7.79 kwdc 13.5kw energy storage system to be installed on exterior wall no structural | $38,950 | [B26-000863](https://nearbypermits.com/somerville/permit/B26-000863/) |
| Jun 16, 2026 | [223 Washington St](https://nearbypermits.com/somerville/address/223-washington-st/) | 660 ft NE | Alteration or repair | Temporary interior structure | $174,557 | [B24-000225](https://nearbypermits.com/somerville/permit/B24-000225/) |
| Jun 9, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 870 ft NW | 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/) | 890 ft N | 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/) | 980 ft N | Alteration or repair | Residential weatherization/air sealing. No structural changes. ( 860845) | $2,000 | [B26-000586](https://nearbypermits.com/somerville/permit/B26-000586/) |
| Jun 8, 2026 | [26 Clark St](https://nearbypermits.com/somerville/address/26-clark-st/) | 870 ft W | New building | Backyard Cottage, foundation B25-000118 | $197,500 | [B24-002160](https://nearbypermits.com/somerville/permit/B24-002160/) |
| Jun 5, 2026 | [26 Clark St](https://nearbypermits.com/somerville/address/26-clark-st/) | 870 ft W | Plumbing | Entire plumbing on a newly built cottage CONTRACTOR REMOVED AS OF 9/15/26, SEE LETTER -JE 9/15/26 | Not listed | [P26-000330](https://nearbypermits.com/somerville/permit/P26-000330/) |
| Jun 2, 2026 | [17 Bonner Ave](https://nearbypermits.com/somerville/address/17-bonner-ave/) | 760 ft N | Electrical | Rooftop solar 12 panels 4.92 kwdc no ESS | $8,768 | [E26-000777](https://nearbypermits.com/somerville/permit/E26-000777/) |
| May 29, 2026 | [17 Linden St](https://nearbypermits.com/somerville/address/17-linden-st/) | 470 ft SE | Plumbing | gas meter test | Not listed | [G26-000273](https://nearbypermits.com/somerville/permit/G26-000273/) |
| May 21, 2026 | [3 Linden St](https://nearbypermits.com/somerville/address/3-linden-st/) | 430 ft E | Alteration or repair | Adding 5 of 4in lally column with 2x2x1 concrete footing for additional structural support | $3,000 | [B26-000582](https://nearbypermits.com/somerville/permit/B26-000582/) |
| May 19, 2026 | [220 Washington St](https://nearbypermits.com/somerville/address/220-washington-st/) | 580 ft NE | Electrical | 120 volt wiring for gate control | $10,000 | [E26-000708](https://nearbypermits.com/somerville/permit/E26-000708/) |
| May 19, 2026 | [16 Homer Sq](https://nearbypermits.com/somerville/address/16-homer-sq/) | 700 ft N | 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 | [18 Linden St](https://nearbypermits.com/somerville/address/18-linden-st/) | 550 ft E | Alteration or repair | Insulation work as part of the MASS Save program. | $12,000 | [B26-000720](https://nearbypermits.com/somerville/permit/B26-000720/) |
| May 13, 2026 | [5 Homer Sq](https://nearbypermits.com/somerville/address/5-homer-sq/) | 890 ft N | Alteration or repair | Emergency roof and siding replacement | $30,000 | [B26-000589](https://nearbypermits.com/somerville/permit/B26-000589/) |
| May 7, 2026 | [21 Linden St](https://nearbypermits.com/somerville/address/21-linden-st/) | 500 ft SE | Alteration or repair | Vinyl Siding, Install 3.5 inch trim around exterior around Garage Door, install white standard block to mount lights, outlets and dryer vents around home, Install 3.5 inch trim around exterior around window, Installing 3.5" James Hardie trim on exterior of door. | $105,287 | [B26-000442](https://nearbypermits.com/somerville/permit/B26-000442/) |
| May 5, 2026 | [14 Linden St](https://nearbypermits.com/somerville/address/14-linden-st/) | 530 ft E | Roofing | Asphalt shingles replacement on the entire house with Owens Corning System Warranty. | $23,899 | [B26-000528](https://nearbypermits.com/somerville/permit/B26-000528/) |
| May 4, 2026 | [24 Webster Ave](https://nearbypermits.com/somerville/address/24-webster-ave/) | 420 ft W | 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 4, 2026 | [205 Washington St](https://nearbypermits.com/somerville/address/205-washington-st/) | 780 ft NE | Electrical | they needed a permit pulled as they’re taking off window frames Siding permit | $150 | [E26-000545](https://nearbypermits.com/somerville/permit/E26-000545/) |
| May 1, 2026 | [21 Union Sq](https://nearbypermits.com/somerville/address/21-union-sq/) | 870 ft NW | 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), 53 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 2, 2026 | [15 Oak St](https://nearbypermits.com/somerville/address/15-oak-st/) | 0.22 mi SW | New building | Foundation Permit Back yard cottage PERMIT TO CONSTRUCT B26-001562 | $15,000 | [B26-000490](https://nearbypermits.com/somerville/permit/B26-000490/) |
| Sep 29, 2026 | [9 Sanborn Ave](https://nearbypermits.com/somerville/address/9-sanborn-ave/) | 0.23 mi N | Alteration or repair | Replace roof deck and railings on the third floor | $17,825 | [B26-001461](https://nearbypermits.com/somerville/permit/B26-001461/) |
| Sep 24, 2026 | [174 Somerville Ave](https://nearbypermits.com/somerville/address/174-somerville-ave/) | 0.24 mi SE | Plumbing | reno of Bathrooms and Starbucks area in Target | Not listed | [P26-000558](https://nearbypermits.com/somerville/permit/P26-000558/) |
| Sep 24, 2026 | [174 Somerville Ave](https://nearbypermits.com/somerville/address/174-somerville-ave/) | 0.24 mi SE | Plumbing | reno of Bathrooms and Starbucks area in Target | Not listed | [G26-000432](https://nearbypermits.com/somerville/permit/G26-000432/) |
| Sep 18, 2026 | [4 Lake St](https://nearbypermits.com/somerville/address/4-lake-st/) | 0.24 mi NW | 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 17, 2026 | [36 Mansfield St](https://nearbypermits.com/somerville/address/36-mansfield-st/) | 0.19 mi E | Plumbing | Replaced boiler only with no water connection, but was told to pull water connection | Not listed | [P26-000547](https://nearbypermits.com/somerville/permit/P26-000547/) |
| Sep 17, 2026 | [211 Tremont St](https://nearbypermits.com/somerville/address/211-tremont-st/) | 0.22 mi S | Plumbing | relocate gas line where interior door is being installed | Not listed | [G26-000427](https://nearbypermits.com/somerville/permit/G26-000427/) |
| Sep 17, 2026 | [36 Mansfield St](https://nearbypermits.com/somerville/address/36-mansfield-st/) | 0.19 mi E | Plumbing | Strictly boiler only replacement no touching of water only Gas | Not listed | [G26-000424](https://nearbypermits.com/somerville/permit/G26-000424/) |
| Sep 17, 2026 | [15 Oak St](https://nearbypermits.com/somerville/address/15-oak-st/) | 0.22 mi SW | New building | Foundation Permit for 3 unit building PERMIT TO CONSTRUCT B26-001560 | $35,000 | [B26-000487](https://nearbypermits.com/somerville/permit/B26-000487/) |
| Sep 15, 2026 | [14 Boston St](https://nearbypermits.com/somerville/address/14-boston-st/) | 0.22 mi NE | Plumbing | replace toilet, vanity, kitchen sink, dishwasher | Not listed | [P26-000541](https://nearbypermits.com/somerville/permit/P26-000541/) |
| Sep 15, 2026 | [163 Washington St](https://nearbypermits.com/somerville/address/163-washington-st/) | 0.24 mi NE | Electrical | (REF this permit: B26-001063) Disconnect Electrical for demo and makesafe. Then add lights to unfinished basement @ 175-177 Washington St | $3,000 | [E26-001309](https://nearbypermits.com/somerville/permit/E26-001309/) |
| Sep 10, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 0.24 mi NW | Plumbing | Install a new gas fire Furnace | Not listed | [G26-000416](https://nearbypermits.com/somerville/permit/G26-000416/) |
| Sep 8, 2026 | [163 Washington St](https://nearbypermits.com/somerville/address/163-washington-st/) | 0.24 mi NE | Alteration or repair | Emergency Demolition,Remove partitions and drywall ceilings in basement @175-177 Washington St | $9,500 | [B26-001063](https://nearbypermits.com/somerville/permit/B26-001063/) |
| Sep 3, 2026 | [15 Oak St](https://nearbypermits.com/somerville/address/15-oak-st/) | 0.22 mi SW | Electrical | Install Ufer grounding for cottage. | $200 | [E26-001313](https://nearbypermits.com/somerville/permit/E26-001313/) |
| Sep 3, 2026 | [15 Oak St](https://nearbypermits.com/somerville/address/15-oak-st/) | 0.22 mi SW | Electrical | Install Ufer grounding for a three-family building. | $200 | [E26-001312](https://nearbypermits.com/somerville/permit/E26-001312/) |
| Sep 3, 2026 | [17 Oak St](https://nearbypermits.com/somerville/address/17-oak-st/) | 0.22 mi SW | Electrical | Install ufer grounding for cottage | $200 | [E26-001311](https://nearbypermits.com/somerville/permit/E26-001311/) |
| Aug 27, 2026 | [9 Sanborn Ave](https://nearbypermits.com/somerville/address/9-sanborn-ave/) | 0.23 mi N | 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 27, 2026 | [44 Columbus Ave](https://nearbypermits.com/somerville/address/44-columbus-ave/) | 0.20 mi N | 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 24, 2026 | [174 Somerville Ave](https://nearbypermits.com/somerville/address/174-somerville-ave/) | 0.24 mi SE | Alteration or repair | Target - Demolition scope for existing store remodel. Interior gut demolition store remodel and merge into additional space 180 and 174 Sommerville Avenue Target.. | $717,000 | [B26-000819](https://nearbypermits.com/somerville/permit/B26-000819/) |
| Aug 19, 2026 | [163 Washington St](https://nearbypermits.com/somerville/address/163-washington-st/) | 0.24 mi NE | Plumbing | Disconnect Shower & lav in basement | Not listed | [P26-000479](https://nearbypermits.com/somerville/permit/P26-000479/) |
| Aug 17, 2026 | [44 Columbus Ave](https://nearbypermits.com/somerville/address/44-columbus-ave/) | 0.20 mi N | 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 17, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.23 mi W | 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 6, 2026 | [17 Oak St](https://nearbypermits.com/somerville/address/17-oak-st/) | 0.22 mi SW | Electrical | Install Ufer grounding for a three-family building. | $200 | [E26-001150](https://nearbypermits.com/somerville/permit/E26-001150/) |
| Aug 6, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.23 mi W | Electrical | Associated electrical work and fire alarm with boiler replacement | $40,000 | [E26-001148](https://nearbypermits.com/somerville/permit/E26-001148/) |
| Aug 6, 2026 | [14 Boston St](https://nearbypermits.com/somerville/address/14-boston-st/) | 0.22 mi NE | Electrical | renovation kitchen and one bathroom | $6,500 | [E26-001144](https://nearbypermits.com/somerville/permit/E26-001144/) |
| Aug 6, 2026 | [211 Tremont St](https://nearbypermits.com/somerville/address/211-tremont-st/) | 0.22 mi S | Alteration or repair | Installing a new connection to combine Unit 11 and Unit 6 into a single dwelling unit by creating a new, code-compliant opening between the two existing units with a new fire door. | $27,000 | [B26-001043](https://nearbypermits.com/somerville/permit/B26-001043/) |
| Aug 5, 2026 | [17 Oak St](https://nearbypermits.com/somerville/address/17-oak-st/) | 0.22 mi SW | New building | Foundation Permit Back yard cottage PERMIT TO CONSTRUCT B26-001561 | $15,000 | [B26-000492](https://nearbypermits.com/somerville/permit/B26-000492/) |
| Aug 4, 2026 | [290 Washington St](https://nearbypermits.com/somerville/address/290-washington-st/) | 0.23 mi W | 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/) | 0.23 mi W | 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 | [14 Boston St](https://nearbypermits.com/somerville/address/14-boston-st/) | 0.22 mi NE | Alteration or repair | Remove old cabinets Remove floor tile Remove drop ceiling Open bigger window on wall between kitchen and living room Install new ceiling Install new floor tile Install new cabinets Replace existing existing doors | $36,480 | [B26-000800](https://nearbypermits.com/somerville/permit/B26-000800/) |
| Jul 21, 2026 | [17 Oak St](https://nearbypermits.com/somerville/address/17-oak-st/) | 0.22 mi SW | New building | Foundation Permit Principle triple decker structure PERMIT TOCONSTRUCT B26-001559 | $35,000 | [B26-000491](https://nearbypermits.com/somerville/permit/B26-000491/) |
| Jul 20, 2026 | [2 Tremont Pl](https://nearbypermits.com/somerville/address/2-tremont-pl/) | 0.23 mi S | Plumbing | Moving a sump pump discharge to a garden bed. It's an old legacy pump that was plumbed to sewer system. | $300 | [B26-001008](https://nearbypermits.com/somerville/permit/B26-001008/) |
| Jul 13, 2026 | [10 Oak St](https://nearbypermits.com/somerville/address/10-oak-st/) | 0.21 mi SW | Electrical | Triple decker complete wiring | $30,000 | [E26-000772](https://nearbypermits.com/somerville/permit/E26-000772/) |
| Jul 8, 2026 | [24 Warren Ave](https://nearbypermits.com/somerville/address/24-warren-ave/) | 0.22 mi N | Alteration or repair | Replace Garage rubber roof | $4,800 | [B26-000934](https://nearbypermits.com/somerville/permit/B26-000934/) |
| Jul 7, 2026 | [17 Bow St](https://nearbypermits.com/somerville/address/17-bow-st/) | 0.22 mi NW | 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 7, 2026 | [285 Washington St](https://nearbypermits.com/somerville/address/285-washington-st/) | 0.23 mi W | Roofing | Roof Recover | $39,693 | [B26-000880](https://nearbypermits.com/somerville/permit/B26-000880/) |
| Jul 6, 2026 | [174 Somerville Ave](https://nearbypermits.com/somerville/address/174-somerville-ave/) | 0.24 mi SE | Electrical | Add 6x circuits and 15x Receptacles in the electronic area gandolas. Work @ 180 somerville | $7,300 | [E26-000960](https://nearbypermits.com/somerville/permit/E26-000960/) |
| Jul 3, 2026 | [174 Somerville Ave](https://nearbypermits.com/somerville/address/174-somerville-ave/) | 0.24 mi SE | Electrical | Electrical demo of vacant retail space. Install temp lighting and power for construction. Work @ target 174-180 somerville ave | $15,000 | [E26-000938](https://nearbypermits.com/somerville/permit/E26-000938/) |
| Jun 30, 2026 | [7 Oak St](https://nearbypermits.com/somerville/address/7-oak-st/) | 0.20 mi SW | Alteration or repair | install 1 kitchen door tempered and 1 front entry door for replacement. no structural changes. | $19,969 | [B26-000825](https://nearbypermits.com/somerville/permit/B26-000825/) |
| Jun 24, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 0.24 mi NW | 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/) | 0.24 mi NW | Electrical | Move exsisting smokes, pull stations and horns out to accommodate new framing | $500 | [E26-000875](https://nearbypermits.com/somerville/permit/E26-000875/) |
| Jun 17, 2026 | [20 Prospect Hill Ave](https://nearbypermits.com/somerville/address/20-prospect-hill-ave/) | 0.23 mi NE | Alteration or repair | air sealing and insulation through the Mass Save program | $1,213 | [B26-000718](https://nearbypermits.com/somerville/permit/B26-000718/) |
| Jun 15, 2026 | [93 Newton St](https://nearbypermits.com/somerville/address/93-newton-st/) | 0.20 mi SW | Electrical | Basement two main area rooms, nearest base of stairs. Lighting and receptacles | $5,000 | [E26-000850](https://nearbypermits.com/somerville/permit/E26-000850/) |
| Jun 11, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 0.24 mi NW | Electrical | Wire room for lights power and heat B26-000400 | $25,000 | [E26-000764](https://nearbypermits.com/somerville/permit/E26-000764/) |
| Jun 5, 2026 | [329 Somerville Ave](https://nearbypermits.com/somerville/address/329-somerville-ave/) | 0.24 mi NW | Plumbing | Remodel a existing Liquor store | Not listed | [P26-000322](https://nearbypermits.com/somerville/permit/P26-000322/) |
| Jun 2, 2026 | [1 Bow St](https://nearbypermits.com/somerville/address/1-bow-st/) | 0.21 mi NW | 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 2, 2026 | [20 Prospect Hill Ave](https://nearbypermits.com/somerville/address/20-prospect-hill-ave/) | 0.23 mi NE | Mechanical (HVAC) | Install two condensers and four mini split heads | $27,632 | [B26-000655](https://nearbypermits.com/somerville/permit/B26-000655/) |
| Jun 1, 2026 | [37 Columbus Ave](https://nearbypermits.com/somerville/address/37-columbus-ave/) | 0.20 mi N | Fence, wall or deck | 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 28, 2026 | [40 Concord Ave](https://nearbypermits.com/somerville/address/40-concord-ave/) | 0.23 mi SW | Electrical | Wire 3 laundry, update service from 100A to 400A, wire 3 subpanels, replace hall lights, wire 1 light on back, wire 1 light front. | $11,025 | [E26-000524](https://nearbypermits.com/somerville/permit/E26-000524/) |
| May 13, 2026 | [19 Bow St](https://nearbypermits.com/somerville/address/19-bow-st/) | 0.25 mi NW | 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 12, 2026 | [23 Oak St](https://nearbypermits.com/somerville/address/23-oak-st/) | 0.24 mi SW | Solar | Rooftop solar installation 18 panels 7.92 kw dc | $39,600 | [B26-000649](https://nearbypermits.com/somerville/permit/B26-000649/) |
| May 6, 2026 | [20 Prospect Hill Ave](https://nearbypermits.com/somerville/address/20-prospect-hill-ave/) | 0.23 mi NE | 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 6, 2026 | [300 Somerville Ave](https://nearbypermits.com/somerville/address/300-somerville-ave/) | 0.19 mi NW | New building | buildout restaurant @ 302 Somerville Ave | $200,000 | [B25-000859](https://nearbypermits.com/somerville/permit/B25-000859/) |

## More on this street

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

- [10 Prospect St](https://nearbypermits.com/somerville/address/10-prospect-st/): newest permit Feb 26, 2026
- [35 Prospect St](https://nearbypermits.com/somerville/address/35-prospect-st/): newest permit May 19, 2026
- [68 Prospect St](https://nearbypermits.com/somerville/address/68-prospect-st/): newest permit Dec 23, 2025
- [69 Prospect St](https://nearbypermits.com/somerville/address/69-prospect-st/): newest permit Sep 24, 2026
- [70 Prospect St](https://nearbypermits.com/somerville/address/70-prospect-st/): newest permit Jun 11, 2025
- [84 Prospect St](https://nearbypermits.com/somerville/address/84-prospect-st/): newest permit Jul 15, 2025
- [97 Prospect St](https://nearbypermits.com/somerville/address/97-prospect-st/): newest permit Jul 22, 2025
- [108 Prospect St](https://nearbypermits.com/somerville/address/108-prospect-st/): newest permit Jun 26, 2026
- [113 Prospect St](https://nearbypermits.com/somerville/address/113-prospect-st/): newest permit Feb 23, 2026
- [118 Prospect St](https://nearbypermits.com/somerville/address/118-prospect-st/): newest permit Jul 8, 2025

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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 2026-10-07 18:26 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, the one permit at this address and 108 nearby: https://nearbypermits.com/somerville/address/20-prospect-st/