# Building permits at 120 Walnut Av, Boston, MA 14 permits issued within a quarter mile in the last 30 days, at least twice the monthly pace before that. Three permits on record here. The newest, Sep 23: Church Slate Roof Restoration/Replacement (for affected area only). Within a quarter mile, the city has issued 40 more permits (38 projects) since May 1. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Sep 23, 2026 | Roofing | Church Slate Roof Restoration/Replacement (for affected area only) | $10,000 | [SF1902172](https://nearbypermits.com/boston/permit/SF1902172/) | | Mar 11, 2025 | Electrical | Install a 62-panel roof-mounted PV solar system. | $98,270 | [E1686690](https://nearbypermits.com/boston/permit/E1686690/) | | Mar 7, 2025 | Solar | Install a 62-panel roof-mounted PV solar systsem. No ESS. | $98,270 | [ALT1693335](https://nearbypermits.com/boston/permit/ALT1693335/) | ## Within ¼ mi since May 1, 2026 40 permits in the circle. From our copy of the city's data (last 24 months). ### Next door (under 250 ft), 3 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 2, 2026 | [6 Humboldt Av](https://nearbypermits.com/boston/address/6-humboldt-av/) | 140 ft S | Mechanical (HVAC) | Installing 6 zone ductless mini split system | $17,000 | [SF1904115](https://nearbypermits.com/boston/permit/SF1904115/) | | Sep 30, 2026 | [6 Humboldt Av](https://nearbypermits.com/boston/address/6-humboldt-av/) | 140 ft S | Electrical | Wiring condenser for ductless mini split system | $1,500 | [E1904103](https://nearbypermits.com/boston/permit/E1904103/) | | Sep 8, 2026 | [6 Humboldt Av](https://nearbypermits.com/boston/address/6-humboldt-av/) | 140 ft S | Alteration or repair | Install 23 sq replacement siding - no structural work | $26,417 | [SF1897242](https://nearbypermits.com/boston/permit/SF1897242/) | ### This block (250 to 1,000 ft), 21 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 2, 2026 | [71 Dale St](https://nearbypermits.com/boston/address/71-dale-st/) | 310 ft N | Plumbing | Replace heating boiler | $5,000 | [PL1906249](https://nearbypermits.com/boston/permit/PL1906249/) | | Sep 28, 2026 | [31 Dale St](https://nearbypermits.com/boston/address/31-dale-st/) | 530 ft E | Electrical | 300 amps service upgrade run circuits for 2 hot water heaters run circuit for condenser run circuit for air handler install bathroom vent fan | $10,000 | [E1904743](https://nearbypermits.com/boston/permit/E1904743/) | | Sep 21, 2026 | [7 Harold Pk](https://nearbypermits.com/boston/address/7-harold-pk/) | 900 ft SW | Alteration or repair | Scrape old siding and install new hardie plank siding, install new asphalt roof shingles, new windows, repair back porche, install new florring, new doors, kitchen and bathroom and interior paint, | $350,000 | [SF1900603](https://nearbypermits.com/boston/permit/SF1900603/) | | Sep 18, 2026 | [46 Catawba St](https://nearbypermits.com/boston/address/46-catawba-st/) | 460 ft SE | Alteration or repair | FRONT PORCH REPAIR- Remove existing wood rails, flooring, frame as needed, install new trex flooring, pvc parts, vinyl railing, replace granite step with concrete pad, install door on side of porch. | $16,800 | [SF1902105](https://nearbypermits.com/boston/permit/SF1902105/) | | Sep 2, 2026 | [39 Catawba St](https://nearbypermits.com/boston/address/39-catawba-st/) | 410 ft SE | Alteration or repair | FRONT PORCH REPAIR remove existing wood rails, flooring, frame as needed, install new wood flooring, steel rails and privacy panel | $3,800 | [SF1896896](https://nearbypermits.com/boston/permit/SF1896896/) | | Aug 27, 2026 | [25 Laurel St](https://nearbypermits.com/boston/address/25-laurel-st/) | 260 ft S | Roofing | Chimney removal -FRONT chimney on asphalt roof. | $3,499 | [SF1891346](https://nearbypermits.com/boston/permit/SF1891346/) | | Aug 26, 2026 | [99 Walnut Av](https://nearbypermits.com/boston/address/99-walnut-av/) | 400 ft N | Alteration or repair | Complete interior demo | $27,000 | [SF1894859](https://nearbypermits.com/boston/permit/SF1894859/) | | Aug 17, 2026 | [90 Walnut Av](https://nearbypermits.com/boston/address/90-walnut-av/) | 420 ft NE | Alteration or repair | update all baths, and kitchen | $10,000 | [SF1888873](https://nearbypermits.com/boston/permit/SF1888873/) | | Aug 12, 2026 | [31 Dale St](https://nearbypermits.com/boston/address/31-dale-st/) | 530 ft E | Alteration or repair | New electrical service, duct work repair, heat pump installation, hot water heater replacement, | $74,145 | [SF1879820](https://nearbypermits.com/boston/permit/SF1879820/) | | Aug 4, 2026 | [25 Catawba St](https://nearbypermits.com/boston/address/25-catawba-st/) | 590 ft SE | Electrical | 400 amp Service broke from the couplin emergency Eversource came out and cut the power work was completed and ready to put back power back on. | $1,800 | [E1882085](https://nearbypermits.com/boston/permit/E1882085/) | | Aug 2, 2026 | [9 Sherman St](https://nearbypermits.com/boston/address/9-sherman-st/) | 710 ft E | Alteration or repair | Remove and replace 2 windows, like for like, same size, no structural changes | $3,994 | [SF1879560](https://nearbypermits.com/boston/permit/SF1879560/) | | Jul 5, 2026 | [6 Laurel St](https://nearbypermits.com/boston/address/6-laurel-st/) | 310 ft E | Alteration or repair | insulating attic and exterior walls with blown in insulation | $13,141 | [SF1867863](https://nearbypermits.com/boston/permit/SF1867863/) | | Jul 5, 2026 | [30 Circuit St](https://nearbypermits.com/boston/address/30-circuit-st/) | 890 ft N | Roofing | - Remove and replaces home's current top layer of roof. - Install new drip edge along the entire entire perimeter. - Install new 060 commercial grade rubber roofing to the entire roof with new sea tape - Remove one chimney. - Install new pipe jacks and flashing to roof as needed. - Remove debris | $16,000 | [SF1862251](https://nearbypermits.com/boston/permit/SF1862251/) | | Jun 24, 2026 | [71 Dale St](https://nearbypermits.com/boston/address/71-dale-st/) | 310 ft N | Electrical | Replace bathroom fan with panasonic bath fan and air cycler smart switch for weatherization work. | $1,200 | [E1863731](https://nearbypermits.com/boston/permit/E1863731/) | | Jun 11, 2026 | [3 Hestia Pk](https://nearbypermits.com/boston/address/3-hestia-pk/) | 860 ft N | Alteration or repair | Demo all water damaged walls in an exist 2fam. replace all fire damaged wood as needed, Repair including finished basement, 2 kitchens, bathrooms and existing finished attic, roof repair replace joist. Partition walls. Electrical, plumbing, HVAC, insulation, all finishes, window siding, Deck repair | $374,275 | [SF1859603](https://nearbypermits.com/boston/permit/SF1859603/) | | Jun 10, 2026 | [146-150 Charlame St](https://nearbypermits.com/boston/address/146--150-charlame-st/) | 740 ft SE | Electrical | Permit to restore utility power | $500 | [E1859775](https://nearbypermits.com/boston/permit/E1859775/) | | May 14, 2026 | [150 Martin Luther King Jr Bl](https://nearbypermits.com/boston/address/150-martin-luther-king-jr-bl/) | 820 ft W | Other | Setting up a hexagon, (2) 20x20, and (2) 30x30 tents for the ymca summer program | $20,670 | [SF1848185](https://nearbypermits.com/boston/permit/SF1848185/) | | May 7, 2026 | [1 Leslie Pk](https://nearbypermits.com/boston/address/1-leslie-pk/) | 410 ft N | Plumbing | Roughing 1 kitchen that's it | $2,000 | [PL1846145](https://nearbypermits.com/boston/permit/PL1846145/) | | May 4, 2026 | [71 Dale St](https://nearbypermits.com/boston/address/71-dale-st/) | 310 ft N | Alteration or repair | Blown in cellulose insulation at exterior walls, air sealing and weatherization. | $23,954 | [SF1844614](https://nearbypermits.com/boston/permit/SF1844614/) | | May 4, 2026 | [3 Hestia Pk](https://nearbypermits.com/boston/address/3-hestia-pk/) | 860 ft N | Alteration or repair | Exterior board up of property due to a fire | $8,000 | [SF1829230](https://nearbypermits.com/boston/permit/SF1829230/) | | May 1, 2026 | [1 Leslie Pk](https://nearbypermits.com/boston/address/1-leslie-pk/) | 410 ft N | Electrical | New kitchen on second floor | $4,500 | [E1841472](https://nearbypermits.com/boston/permit/E1841472/) | ### Farther (1,000 ft to ¼ mi), 16 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 5, 2026 | [205 Walnut Av](https://nearbypermits.com/boston/address/205-walnut-av/) | 0.21 mi W | Alteration or repair | Blown in cellulose insulation at exterior walls, air sealing and weatherization. | $8,446 | [SF1905575](https://nearbypermits.com/boston/permit/SF1905575/) | | Sep 16, 2026 | [76 Munroe St](https://nearbypermits.com/boston/address/76-munroe-st/) | 0.19 mi SW | Plumbing | gas combi boiler install | $7,500 | [PL1901476](https://nearbypermits.com/boston/permit/PL1901476/) | | Sep 16, 2026 | [76 Munroe St](https://nearbypermits.com/boston/address/76-munroe-st/) | 0.19 mi SW | Plumbing | gas combi boiler install | $7,500 | [G1901471](https://nearbypermits.com/boston/permit/G1901471/) | | Sep 16, 2026 | [12-26 Crestwood Pk](https://nearbypermits.com/boston/address/12--26-crestwood-pk/) | 0.23 mi SW | Plumbing | #12 only - (2) boiler swaps + (1) DHW swap | $15,000 | [PL1901330](https://nearbypermits.com/boston/permit/PL1901330/) | | Sep 16, 2026 | [12-26 Crestwood Pk](https://nearbypermits.com/boston/address/12--26-crestwood-pk/) | 0.23 mi SW | Plumbing | #12 only - (2) boiler swaps + (1) DHW swap. | $15,000 | [G1901325](https://nearbypermits.com/boston/permit/G1901325/) | | Sep 11, 2026 | [205 Walnut Av](https://nearbypermits.com/boston/address/205-walnut-av/) | 0.21 mi W | Alteration or repair | we are insulating the walls with cellulose insulation and insulating the rim joist with r-19 fiberglass | $6,170 | [SF1897702](https://nearbypermits.com/boston/permit/SF1897702/) | | Sep 10, 2026 | [28-38 Crestwood Pk](https://nearbypermits.com/boston/address/28--38-crestwood-pk/) | 0.22 mi SW | Plumbing | #38 Only - Remove (2) existing boilers + (1) water heater and install (2) new heating boilers + (1) indirect water heater. | $14,000 | [PL1899781](https://nearbypermits.com/boston/permit/PL1899781/) | | Sep 10, 2026 | [28-38 Crestwood Pk](https://nearbypermits.com/boston/address/28--38-crestwood-pk/) | 0.22 mi SW | Plumbing | Remove (2) existing boilers + (1) water heater and install (2) new heating boilers + (1) indirect water heater. | $14,000 | [G1899775](https://nearbypermits.com/boston/permit/G1899775/) | | Sep 8, 2026 | [107 Munroe St](https://nearbypermits.com/boston/address/107-munroe-st/) | 0.23 mi SW | Electrical | half bathroom | $2,000 | [E1896394](https://nearbypermits.com/boston/permit/E1896394/) | | Aug 25, 2026 | [107 Munroe St](https://nearbypermits.com/boston/address/107-munroe-st/) | 0.23 mi SW | Plumbing | New plumbing for a half bathroom. | $5,000 | [PL1891876](https://nearbypermits.com/boston/permit/PL1891876/) | | Aug 21, 2026 | [115 Dale St](https://nearbypermits.com/boston/address/115-dale-st/) | 0.20 mi NW | Electrical | rewire unit take out aluminum wiring and wire with coper wire unit 6 | $12,000 | [E1890963](https://nearbypermits.com/boston/permit/E1890963/) | | Jul 30, 2026 | [78 Harold St](https://nearbypermits.com/boston/address/78-harold-st/) | 0.25 mi SW | Roofing | Gray EZTPO Roofing Replacement on lower back section of flat roof. Asphalt shingles replacement on back half of roof around skylight. Gutter and downspouts replacement on section where we are replacing the flat lower roof. | $8,699 | [SF1874772](https://nearbypermits.com/boston/permit/SF1874772/) | | Jul 30, 2026 | [107 Munroe St](https://nearbypermits.com/boston/address/107-munroe-st/) | 0.23 mi SW | Alteration or repair | we would like to add a half bath to the first floor living space which would include 1 toilet, 1 sink, and proper ventilation. | $9,000 | [SF1847636](https://nearbypermits.com/boston/permit/SF1847636/) | | Jul 22, 2026 | [205 Walnut Av](https://nearbypermits.com/boston/address/205-walnut-av/) | 0.21 mi W | Alteration or repair | Residential weatherization/air sealing. No structural changes. (Site ID-1716860549) (Unit-1) | $1,000 | [SF1864746](https://nearbypermits.com/boston/permit/SF1864746/) | | Jul 1, 2026 | [95 Munroe St](https://nearbypermits.com/boston/address/95-munroe-st/) | 0.20 mi SW | Roofing | Strip and reroof | $22,000 | [SF1867963](https://nearbypermits.com/boston/permit/SF1867963/) | | May 15, 2026 | [91 Regent St](https://nearbypermits.com/boston/address/91-regent-st/) | 0.21 mi NW | Roofing | Emergency Repair: the slate hip caps on all the hip locations around the building are failing and creating a hazard at the sidewalk, ADA ramp. Remove existing slate hip caps, make repairs to wood below, install metal hip caps over all hip locations fastened through the slate and into the roof deck | $29,850 | [SF1848669](https://nearbypermits.com/boston/permit/SF1848669/) | ## More on this street Other addresses on Walnut Av with permits, nearest house number first: - [99 Walnut Av](https://nearbypermits.com/boston/address/99-walnut-av/): newest permit Aug 26, 2026 - [92 Walnut Av](https://nearbypermits.com/boston/address/92-walnut-av/): newest permit May 29, 2025 - [90 Walnut Av](https://nearbypermits.com/boston/address/90-walnut-av/): newest permit Aug 17, 2026 - [88 Walnut Av](https://nearbypermits.com/boston/address/88-walnut-av/): newest permit Sep 12, 2025 - [154 Walnut Av](https://nearbypermits.com/boston/address/154-walnut-av/): newest permit Aug 19, 2025 - [196 Walnut Av](https://nearbypermits.com/boston/address/196-walnut-av/): newest permit Oct 22, 2025 - [205 Walnut Av](https://nearbypermits.com/boston/address/205-walnut-av/): newest permit Oct 5, 2026 - [247 Walnut Av](https://nearbypermits.com/boston/address/247-walnut-av/): newest permit Sep 25, 2026 - [277 Walnut Av](https://nearbypermits.com/boston/address/277-walnut-av/): newest permit Oct 9, 2025 - [279 Walnut Av](https://nearbypermits.com/boston/address/279-walnut-av/): newest permit Sep 22, 2026 --- Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-08 10:27 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, all 3 permits at this address and 40 nearby: https://nearbypermits.com/boston/address/120-walnut-av/