# Building permits at 21 Thompson St, Boston, MA

Four permits on record here. The newest, Jan 7, 2025: Install bathroom Fan. Within a quarter mile, the city has issued 45 more permits (41 projects) since May 1.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Jan 7, 2025 | Electrical | Install bathroom Fan | $1,000 | [E1681680](https://nearbypermits.com/boston/permit/E1681680/) |
| Jan 6, 2025 | Alteration or repair | To insulate attic and exterior walls with blown in cellulose insulation. | $9,710 | [SF1678268](https://nearbypermits.com/boston/permit/SF1678268/) |
| Oct 28, 2024 | Plumbing | Remove existing DHW + boiler. Install new heating only boiler, + Superstor DHW. | $7,000 | [PL1666550](https://nearbypermits.com/boston/permit/PL1666550/) |
| Oct 28, 2024 | Plumbing | Remove existing boiler + DHW, and install (1) new heating only boiler + (1) Superstor DHW. | $7,000 | [G1666547](https://nearbypermits.com/boston/permit/G1666547/) |

## Within ¼ mi since May 1, 2026

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

### Next door (under 250 ft), 2 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Jul 9, 2026 | [9 Thompson St](https://nearbypermits.com/boston/address/9-thompson-st/) | 230 ft NE | Electrical | Installation of 1 Tesla powerwall3 battery installed on exterior of home | $10,000 | [SF1867897](https://nearbypermits.com/boston/permit/SF1867897/) |
| Jul 8, 2026 | [9 Thompson St](https://nearbypermits.com/boston/address/9-thompson-st/) | 230 ft NE | Electrical | Installation of 1 Tesla powerwall3 battery installed on exterior of home | $10,000 | [E1867901](https://nearbypermits.com/boston/permit/E1867901/) |

### This block (250 to 1,000 ft), 17 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | [12 Cottage Pl](https://nearbypermits.com/boston/address/12-cottage-pl/) | 640 ft E | Electrical | Low voltage alarm install | $1,200 | [ELV1906016](https://nearbypermits.com/boston/permit/ELV1906016/) |
| Sep 23, 2026 | [202 Reservation Rd](https://nearbypermits.com/boston/address/202-reservation-rd/) | 470 ft E | Electrical | 100 to 200 Amp Service Upgrade | $6,800 | [E1902225](https://nearbypermits.com/boston/permit/E1902225/) |
| Aug 21, 2026 | [1450 River St](https://nearbypermits.com/boston/address/1450-river-st/) | 800 ft E | Alteration or repair | Air sealing insulation in attic space | $7,203 | [SF1867546](https://nearbypermits.com/boston/permit/SF1867546/) |
| Aug 5, 2026 | [7-9 Roxana St](https://nearbypermits.com/boston/address/7--9-roxana-st/) | 660 ft SE | Plumbing | 2nd Floor renovation of Unit 4 | $6,000 | [PL1881837](https://nearbypermits.com/boston/permit/PL1881837/) |
| Aug 3, 2026 | [250 Reservation Rd](https://nearbypermits.com/boston/address/250-reservation-rd/) | 320 ft N | Alteration or repair | Remove existing stair bricks, install new ones. Paint rail. Install pavers on walkway; OPEN VIOLATION AT THIS PROPERTY;V888613 | $11,000 | [SF1869568](https://nearbypermits.com/boston/permit/SF1869568/) |
| Jul 30, 2026 | [7-9 Roxana St](https://nearbypermits.com/boston/address/7--9-roxana-st/) | 660 ft SE | Electrical | Rewire the 2 floor units full rewire updated, doing smokes and lights on the back stairs and front | $20,000 | [E1880483](https://nearbypermits.com/boston/permit/E1880483/) |
| Jul 25, 2026 | [15-17 Roxana St](https://nearbypermits.com/boston/address/15--17-roxana-st/) | 600 ft SE | Roofing | strip and re roof 25 square of asphalt shingles | $10,000 | [SF1830330](https://nearbypermits.com/boston/permit/SF1830330/) |
| Jul 21, 2026 | [10 Franklin St](https://nearbypermits.com/boston/address/10-franklin-st/) | 340 ft S | Alteration or repair | Shower to shower remodel with an acrylic replacement unit and prefabricated base. Replace fixture and valve. No structural work and remove and replace (1) toilet, like for like. | $23,000 | [SF1873460](https://nearbypermits.com/boston/permit/SF1873460/) |
| Jul 17, 2026 | [10 Franklin St](https://nearbypermits.com/boston/address/10-franklin-st/) | 340 ft S | Plumbing | Shower to shower remodel with an acrylic replacement unit and prefabricated base. Replace fixture and valve. No structural work and remove and replace (1) toilet, like for like. | $23,000 | [PL1873466](https://nearbypermits.com/boston/permit/PL1873466/) |
| Jul 8, 2026 | [43 Thompson St](https://nearbypermits.com/boston/address/43-thompson-st/) | 400 ft SW | Alteration or repair | Mass Save Insulation and Air Sealing | $2,577 | [SF1858470](https://nearbypermits.com/boston/permit/SF1858470/) |
| Jun 16, 2026 | [1455 River St](https://nearbypermits.com/boston/address/1455-river-st/) | 640 ft SE | Roofing | Remove and replace rubber roof system. | $20,000 | [SF1857914](https://nearbypermits.com/boston/permit/SF1857914/) |
| Jun 9, 2026 | [211-213 Reservation Rd](https://nearbypermits.com/boston/address/211--213-reservation-rd/) | 480 ft E | Alteration or repair | Residential weatherization/air sealing. No structural changes. (Site ID-853176) (Unit 211) | $3,000 | [SF1852487](https://nearbypermits.com/boston/permit/SF1852487/) |
| Jun 8, 2026 | [7-9 Roxana St](https://nearbypermits.com/boston/address/7--9-roxana-st/) | 660 ft SE | Alteration or repair | Confirm occupancy of existing 6 Residential Units; | Not listed | [ALT1853403](https://nearbypermits.com/boston/permit/ALT1853403/) |
| May 26, 2026 | [7-9 Roxana St](https://nearbypermits.com/boston/address/7--9-roxana-st/) | 660 ft SE | Alteration or repair | Repair fire damaged siding and 2nd floor deck on front of the building. Replace 12 windows in front and 8 on side Fully renovate unit 4 including new kitchen and bathroom. Light touch up renovations in other units including refinishing hardwood floors, paint, replacing tile and new kitchen cabinets. | $175,000 | [SF1853165](https://nearbypermits.com/boston/permit/SF1853165/) |
| May 16, 2026 | [148 Beaver St](https://nearbypermits.com/boston/address/148-beaver-st/) | 840 ft NE | Alteration or repair | Interior renovation of existing single-family dwelling, including kitchen and bathroom demolition, minor framing modifications, full upgrade of plumbing, electrical, and HVAC systems, and associated finish work. | $140,000 | [SF1845267](https://nearbypermits.com/boston/permit/SF1845267/) |
| May 15, 2026 | [1409 River St](https://nearbypermits.com/boston/address/1409-river-st/) | 980 ft E | Plumbing | replace toilet, sink, and tub | $1,200 | [PL1849297](https://nearbypermits.com/boston/permit/PL1849297/) |
| May 4, 2026 | [155 Beaver St](https://nearbypermits.com/boston/address/155-beaver-st/) | 650 ft N | Alteration or repair | Residential weatherization/air sealing. No structural changes. (Site ID - 1613580976, 1802243665 ) (Unit-1) (Unit-2) | $13,000 | [SF1839547](https://nearbypermits.com/boston/permit/SF1839547/) |

### Farther (1,000 ft to ¼ mi), 26 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 24, 2026 | [41 Hillis Rd](https://nearbypermits.com/boston/address/41-hillis-rd/) | 0.22 mi S | Plumbing | Basement Bathroom - Replace shower stall, no structural change. (Other is a valve) | $1,500 | [PL1903236](https://nearbypermits.com/boston/permit/PL1903236/) |
| Sep 22, 2026 | [1501 River St](https://nearbypermits.com/boston/address/1501-river-st/) | 0.20 mi SE | Roofing | 14sq. strip & re-roof; IKO Dynasty - Frostone Grey | $22,000 | [SF1869800](https://nearbypermits.com/boston/permit/SF1869800/) |
| Aug 25, 2026 | [1501 River St](https://nearbypermits.com/boston/address/1501-river-st/) | 0.20 mi SE | Alteration or repair | Confirm occupancy of existing single-family dwelling.; | Not listed | [ALT1872457](https://nearbypermits.com/boston/permit/ALT1872457/) |
| Aug 20, 2026 | [1420 River St](https://nearbypermits.com/boston/address/1420-river-st/) | 0.19 mi E | Electrical | upgrade electrical service from 100 amp to 200amp and add common meter | $3,500 | [E1890209](https://nearbypermits.com/boston/permit/E1890209/) |
| Aug 12, 2026 | [19 Donna Te](https://nearbypermits.com/boston/address/19-donna-te/) | 0.25 mi E | Roofing | Remove existing shingle roof on the entire house, Install an 8" drip edge on all leading edges, Install 6' of ice and water shield on front leading edges and valleys, Install new ridge vent, Install new vent pipe flanges, Install new GAF Timberline High Definition Architectural shingles | $6,500 | [SF1870185](https://nearbypermits.com/boston/permit/SF1870185/) |
| Aug 12, 2026 | [37 Hillis Rd](https://nearbypermits.com/boston/address/37-hillis-rd/) | 0.22 mi S | Plumbing | bathroom/kitchen remodel | $10,000 | [PL1880105](https://nearbypermits.com/boston/permit/PL1880105/) |
| Aug 12, 2026 | [37 Hillis Rd](https://nearbypermits.com/boston/address/37-hillis-rd/) | 0.22 mi S | Electrical | Replace wiring, devices, lighting, and breakers for kitchen area that came into contact with deteriorating agents. | $8,000 | [E1880517](https://nearbypermits.com/boston/permit/E1880517/) |
| Aug 11, 2026 | [19 Donna Te](https://nearbypermits.com/boston/address/19-donna-te/) | 0.25 mi E | Roofing | 14 roof squares strip and re-roof, IKO Dynasty - Summit Grey | $12,000 | [SF1879749](https://nearbypermits.com/boston/permit/SF1879749/) |
| Aug 3, 2026 | [76-78 Sunnyside St](https://nearbypermits.com/boston/address/76--78-sunnyside-st/) | 0.23 mi S | Solar | Installation of roof mounted photovoltaic solar systems, 11.48 KW 28 panels NO BATTERY STORAGE | $72,900 | [E1880713](https://nearbypermits.com/boston/permit/E1880713/) |
| Jul 31, 2026 | [76-78 Sunnyside St](https://nearbypermits.com/boston/address/76--78-sunnyside-st/) | 0.23 mi S | Solar | Installation of roof mounted photovoltaic solar systems, 11.48 kw 28 panels NO BATTERY STORAGE | $72,900 | [SF1870045](https://nearbypermits.com/boston/permit/SF1870045/) |
| Jul 30, 2026 | [19 Donna Te](https://nearbypermits.com/boston/address/19-donna-te/) | 0.25 mi E | Solar | Remove pre-existent solar array for roof replacement. 19 panels total. Reinstall solar on roof. | $16,000 | [SF1879123](https://nearbypermits.com/boston/permit/SF1879123/) |
| Jul 30, 2026 | [19 Donna Te](https://nearbypermits.com/boston/address/19-donna-te/) | 0.25 mi E | Solar | Remove pre-existent solar array for roof replacement. 19 panels total. Reinstall solar on roof. | $16,000 | [E1879136](https://nearbypermits.com/boston/permit/E1879136/) |
| Jul 20, 2026 | [132 Beaver St](https://nearbypermits.com/boston/address/132-beaver-st/) | 0.21 mi NE | Other | Remove illegal kitchen and correct and close violation #860064 and return basement to storage only | $1,000 | [SF1872367](https://nearbypermits.com/boston/permit/SF1872367/) |
| Jul 20, 2026 | [76-78 Sunnyside St](https://nearbypermits.com/boston/address/76--78-sunnyside-st/) | 0.23 mi S | Electrical | Low voltage alarm install | $1,200 | [ELV1873128](https://nearbypermits.com/boston/permit/ELV1873128/) |
| Jul 10, 2026 | [79-81 Sunnyside St](https://nearbypermits.com/boston/address/79--81-sunnyside-st/) | 0.23 mi S | Solar | Installation of roof mounted photovoltaic solar systems, 10.25 KW 25 panels with installation of 1 franklin battery installed on exterior of home | $30,928 | [SF1861656](https://nearbypermits.com/boston/permit/SF1861656/) |
| Jun 23, 2026 | [79-81 Sunnyside St](https://nearbypermits.com/boston/address/79--81-sunnyside-st/) | 0.23 mi S | Solar | Installation of roof mounted photovoltaic solar systems, 10.25 KW 25 panels with installation of 1 franklin battery installed on exterior of home | $30,928 | [E1861658](https://nearbypermits.com/boston/permit/E1861658/) |
| Jul 2, 2026 | [79-81 Sunnyside St](https://nearbypermits.com/boston/address/79--81-sunnyside-st/) | 0.23 mi S | Alteration or repair | replacing the front stairs | $4,000 | [SF1868454](https://nearbypermits.com/boston/permit/SF1868454/) |
| Jun 29, 2026 | [32 Hillis Rd](https://nearbypermits.com/boston/address/32-hillis-rd/) | 0.24 mi S | Roofing | Reroof | $10,000 | [SF1777235](https://nearbypermits.com/boston/permit/SF1777235/) |
| Jun 29, 2026 | [84-86 Sunnyside St](https://nearbypermits.com/boston/address/84--86-sunnyside-st/) | 0.25 mi S | Plumbing | replacement of a range | $200 | [G1865145](https://nearbypermits.com/boston/permit/G1865145/) |
| Jun 26, 2026 | [37 Hillis Rd](https://nearbypermits.com/boston/address/37-hillis-rd/) | 0.22 mi S | Alteration or repair | Interior repairs due to water damage.2nd floor bath remodel. Replace insulation & wallboard in 2nd floor bedroom & 1st floor kitchen & Hall. Replace finish flooring, trim and paint. | $54,549 | [SF1859820](https://nearbypermits.com/boston/permit/SF1859820/) |
| Jun 4, 2026 | [55 Charles St](https://nearbypermits.com/boston/address/55-charles-st/) | 0.24 mi S | Roofing | strip roof to sheathing. install new GAF weather Stopper Roof System | $14,765 | [SF1857276](https://nearbypermits.com/boston/permit/SF1857276/) |
| May 28, 2026 | [22-24 Hillis Rd](https://nearbypermits.com/boston/address/22--24-hillis-rd/) | 0.22 mi S | Electrical | 125/100A Main panel upgrade | $2,200 | [E1855365](https://nearbypermits.com/boston/permit/E1855365/) |
| May 26, 2026 | [22-24 Hillis Rd](https://nearbypermits.com/boston/address/22--24-hillis-rd/) | 0.22 mi S | Solar | Installation of roof mounted photovoltaic solar systems, 3.28 kw 8 panels NO BATTERY STORAGE | $29,400 | [E1853316](https://nearbypermits.com/boston/permit/E1853316/) |
| May 21, 2026 | [40 Charles St](https://nearbypermits.com/boston/address/40-charles-st/) | 0.21 mi S | Electrical | Install 8 4 cable & 4 telephone lines | $1,200 | [ELV1852158](https://nearbypermits.com/boston/permit/ELV1852158/) |
| May 21, 2026 | [40 Charles St](https://nearbypermits.com/boston/address/40-charles-st/) | 0.21 mi S | Fire systems | Install smoke & carbon on 2 floors basement | $1,500 | [EFA1852154](https://nearbypermits.com/boston/permit/EFA1852154/) |
| May 21, 2026 | [40 Charles St](https://nearbypermits.com/boston/address/40-charles-st/) | 0.21 mi S | Electrical | Complete wiring of 1 family due to fire &; reconnect existing service | $27,000 | [E1852149](https://nearbypermits.com/boston/permit/E1852149/) |

## Zoning requests nearby

Hearings are public: you can comment or attend. Dates can move; check the city's page before you go.

| Status | Hearing | Address | Distance | Request | Case | City's words | Filed |
|---|---|---|---|---|---|---|---|
| Approved | May 5, 2026 | 4 Adams St | 0.20 mi E | Zoning appeal; the description is on the city's appeal tracker. | [BOA1800604](https://www.boston.gov/appeal-tracker) | "Appeal Closed", decision "AppProv" | 2025-11-24 |

Boston's decision codes, from its data dictionary (https://data.boston.gov/dataset/37d2e087-ce02-4090-bfdf-22de1ada3b23/resource/e11dcfa5-6f6f-4999-abc3-741f53c6731f/download/zba-data-dictionary.pdf): AppProv, "approved with conditions".

## More on this street

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

- [17 Thompson St](https://nearbypermits.com/boston/address/17-thompson-st/): newest permit Sep 15, 2025
- [11 Thompson St](https://nearbypermits.com/boston/address/11-thompson-st/): newest permit Jan 2, 2025
- [9 Thompson St](https://nearbypermits.com/boston/address/9-thompson-st/): newest permit Jul 9, 2026
- [43 Thompson St](https://nearbypermits.com/boston/address/43-thompson-st/): newest permit Jul 8, 2026
- [45-47 Thompson St](https://nearbypermits.com/boston/address/45--47-thompson-st/): newest permit Jul 3, 2025
- [65 Thompson St](https://nearbypermits.com/boston/address/65-thompson-st/): newest permit Jul 7, 2025
- [90 Thompson St](https://nearbypermits.com/boston/address/90-thompson-st/): newest permit Apr 23, 2026
- [110 Thompson St](https://nearbypermits.com/boston/address/110-thompson-st/): newest permit Nov 26, 2025
- [114 Thompson St](https://nearbypermits.com/boston/address/114-thompson-st/): newest permit Nov 14, 2025
- [118 Thompson St](https://nearbypermits.com/boston/address/118-thompson-st/): newest permit Feb 22, 2026

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-09 18:49 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Zoning requests come from the Boston Zoning Board of Appeal tracker (https://data.boston.gov/dataset/zoning-board-of-appeal-tracker). We read it Oct 9, 13:17 UTC.

Map, all 4 permits at this address and 45 nearby: https://nearbypermits.com/boston/address/21-thompson-st/