# Building permits at 21 Philbrick St, Boston, MA

The biggest project within a quarter mile since May 1: a $502,780 addition at 23 Byrd Av, permitted Jun 9.

Four permits on record here. The newest, Oct 8, 2025: Insulation + air sealing. Within a quarter mile, the city has issued 69 more permits (65 projects) since May 1. One is for a new building, 0.21 mi away.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Oct 8, 2025 | Alteration or repair | Insulation + air sealing | $2,500 | [SF1781929](https://nearbypermits.com/boston/permit/SF1781929/) |
| Jun 11, 2019 | Alteration or repair | bathroom remodel | $18,230 | [SF963277](https://nearbypermits.com/boston/permit/SF963277/) |
| Nov 1, 2018 | Plumbing | F+i new water heater | $700 | [PL895293](https://nearbypermits.com/boston/permit/PL895293/) |
| Oct 31, 2018 | Plumbing | F+i new water heater | $700 | [G895290](https://nearbypermits.com/boston/permit/G895290/) |

## Within ¼ mi since May 1, 2026

69 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 |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | [18 Neponset Av](https://nearbypermits.com/boston/address/18-neponset-av/) | 170 ft NE | Plumbing | Pipe new laundry. Drain, vent, water supplies. Repipe existing tub drainage. Plumbing only. | $20,000 | [PL1905802](https://nearbypermits.com/boston/permit/PL1905802/) |
| May 28, 2026 | [420 Hyde Park Av](https://nearbypermits.com/boston/address/420-hyde-park-av/) | 80 ft W | Plumbing | backflow preventer, water pipe | $1,000 | [PL1842874](https://nearbypermits.com/boston/permit/PL1842874/) |
| May 28, 2026 | [420 Hyde Park Av](https://nearbypermits.com/boston/address/420-hyde-park-av/) | 80 ft W | Plumbing | Install a Navian boiler 170,000 btu | $1,000 | [G1842508](https://nearbypermits.com/boston/permit/G1842508/) |
| May 19, 2026 | [410 Hyde Park Av](https://nearbypermits.com/boston/address/410-hyde-park-av/) | 160 ft N | Alteration or repair | Strip existing aluminum siding and install new vinyl siding | $45,700 | [SF1848936](https://nearbypermits.com/boston/permit/SF1848936/) |

### This block (250 to 1,000 ft), 35 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 7, 2026 | [17 Wyvern St](https://nearbypermits.com/boston/address/17-wyvern-st/) | 820 ft N | Plumbing | Replace water heater in basement | $1,800 | [PL1863041](https://nearbypermits.com/boston/permit/PL1863041/) |
| Oct 7, 2026 | [17 Wyvern St](https://nearbypermits.com/boston/address/17-wyvern-st/) | 820 ft N | Plumbing | Reconnect gas to the water heater | $1,800 | [G1863044](https://nearbypermits.com/boston/permit/G1863044/) |
| Oct 7, 2026 | [37 Florian St](https://nearbypermits.com/boston/address/37-florian-st/) | 590 ft NE | Electrical | 200A service upgrade. Ductless mini split / heat pump wiring | $6,000 | [E1906582](https://nearbypermits.com/boston/permit/E1906582/) |
| Oct 5, 2026 | [36 Mount Hope St](https://nearbypermits.com/boston/address/36-mount-hope-st/) | 740 ft S | Mechanical (HVAC) | Replacing a ductless Gree mini split Head. Model # 3vir18hp230v1ah 18btu. | $1,000 | [SF1899332](https://nearbypermits.com/boston/permit/SF1899332/) |
| Oct 5, 2026 | [31 Harrison St](https://nearbypermits.com/boston/address/31-harrison-st/) | 920 ft NW | Plumbing | Replacement of gas water heater | $1,989 | [PL1905621](https://nearbypermits.com/boston/permit/PL1905621/) |
| Oct 5, 2026 | [31 Harrison St](https://nearbypermits.com/boston/address/31-harrison-st/) | 920 ft NW | Plumbing | Replacement of gas water heater | $1,989 | [G1905613](https://nearbypermits.com/boston/permit/G1905613/) |
| Oct 2, 2026 | [36 Mount Hope St](https://nearbypermits.com/boston/address/36-mount-hope-st/) | 740 ft S | Electrical | Wiring a ductless Gree mini split Head. Model #3vir18hp230v1ah 18btu. | $1,000 | [E1899334](https://nearbypermits.com/boston/permit/E1899334/) |
| Oct 1, 2026 | [29 Neponset Av](https://nearbypermits.com/boston/address/29-neponset-av/) | 310 ft E | Plumbing | Remodeling. Final only. Basement: 1 kitchen sink, 1 ice maker, 1 toilet, 1 lavatory, and 1 shower stall. | $5,000 | [PL1906231](https://nearbypermits.com/boston/permit/PL1906231/) |
| Sep 4, 2026 | [12 Neponset Ct](https://nearbypermits.com/boston/address/12-neponset-ct/) | 880 ft E | Electrical | 1x30A 240v circuit to serve 4 wire outlet in laundry room located above panel. 25' approx 10-3 rommex. Furnish and install 30A GFCI 2 pole circuit breaker at panel. (GE panel) | $1,500 | [E1896637](https://nearbypermits.com/boston/permit/E1896637/) |
| Sep 1, 2026 | [22-24 Mount Hope St](https://nearbypermits.com/boston/address/22--24-mount-hope-st/) | 620 ft S | Plumbing | Convert bathtub to shower in first floor bathroom. Replace toilet, vanity, and valve. | $8,000 | [PL1895798](https://nearbypermits.com/boston/permit/PL1895798/) |
| Aug 31, 2026 | [12-12a Wyvern St](https://nearbypermits.com/boston/address/12--12a-wyvern-st/) | 980 ft N | Alteration or repair | install 6 harvey replacement windows energy star, inserts only with no structural work | $7,020 | [SF1891551](https://nearbypermits.com/boston/permit/SF1891551/) |
| Aug 27, 2026 | [217-219 Florence St](https://nearbypermits.com/boston/address/217--219-florence-st/) | 600 ft W | Plumbing | replace existing tub valve only with new tub valve only | $1,500 | [PL1895308](https://nearbypermits.com/boston/permit/PL1895308/) |
| Aug 24, 2026 | [6 Larch Pl](https://nearbypermits.com/boston/address/6-larch-pl/) | 660 ft NW | Plumbing | replace gas furnace | $500 | [G1890375](https://nearbypermits.com/boston/permit/G1890375/) |
| Aug 20, 2026 | [28 Marion St](https://nearbypermits.com/boston/address/28-marion-st/) | 750 ft NW | Fire systems | replace backflow preventer | $10,000 | [SF1885657](https://nearbypermits.com/boston/permit/SF1885657/) |
| Aug 20, 2026 | [20 Destefano Rd](https://nearbypermits.com/boston/address/20-destefano-rd/) | 940 ft S | Solar | Temporarily remove and reinstall existing solar panels for roof work. | $499 | [E1890138](https://nearbypermits.com/boston/permit/E1890138/) |
| Aug 13, 2026 | [218 Florence St](https://nearbypermits.com/boston/address/218-florence-st/) | 470 ft W | Plumbing | Tub to shower remodel with an acrylic replacement unit and prefabricated base. Replace fixture and valve. No structural work. | $4,959 | [PL1880370](https://nearbypermits.com/boston/permit/PL1880370/) |
| Aug 12, 2026 | [218 Florence St](https://nearbypermits.com/boston/address/218-florence-st/) | 470 ft W | Alteration or repair | Tub to shower remodel with an acrylic replacement unit and prefabricated base. Replace fixture and valve. No structural work. | $15,771 | [SF1880367](https://nearbypermits.com/boston/permit/SF1880367/) |
| Aug 11, 2026 | [193 Florence St](https://nearbypermits.com/boston/address/193-florence-st/) | 920 ft W | Alteration or repair | Air seal and insulate exterior walls and basement ceiling. | $20,000 | [SF1883600](https://nearbypermits.com/boston/permit/SF1883600/) |
| Jul 17, 2026 | [28 Marion St](https://nearbypermits.com/boston/address/28-marion-st/) | 750 ft NW | Fire systems | Install new fire alarm in place of assembly, church : casa gloriosa internacional boston. To include new fire alarm panel, notification devices, and detection devices, along with audio shutdown and if needed auto illumination features. Building has existing sprinkler protection throughout | $12,750 | [EFA1873503](https://nearbypermits.com/boston/permit/EFA1873503/) |
| Jul 9, 2026 | [17 Wyvern St](https://nearbypermits.com/boston/address/17-wyvern-st/) | 820 ft N | Plumbing | water piping for boiler replacement | $850 | [PL1870191](https://nearbypermits.com/boston/permit/PL1870191/) |
| Jul 9, 2026 | [17 Wyvern St](https://nearbypermits.com/boston/address/17-wyvern-st/) | 820 ft N | Plumbing | gas boiler replacement | $3,200 | [G1870182](https://nearbypermits.com/boston/permit/G1870182/) |
| Jul 8, 2026 | [34 Sammett Av](https://nearbypermits.com/boston/address/34-sammett-av/) | 700 ft SE | Alteration or repair | weatherization work through the mass save program | $3,115 | [SF1869905](https://nearbypermits.com/boston/permit/SF1869905/) |
| Jul 6, 2026 | [69-71 Starbird Av](https://nearbypermits.com/boston/address/69--71-starbird-av/) | 970 ft SE | Electrical | Update outlets for kitchen counter, dishwasher and disposal. Run new circuit for microwave/hood fan. | $2,500 | [E1868983](https://nearbypermits.com/boston/permit/E1868983/) |
| Jun 10, 2026 | [29 Neponset Av](https://nearbypermits.com/boston/address/29-neponset-av/) | 310 ft E | Alteration or repair | Extend living space into basement. Basement open living, office and bathroom added an egress window in office space.SF1790469 issued with a cost of $120,000.00. | $3,849 | [ALT1844682](https://nearbypermits.com/boston/permit/ALT1844682/) |
| Jun 9, 2026 | [23 Byrd Av](https://nearbypermits.com/boston/address/23-byrd-av/) | 940 ft E | Addition | Addition to rear of house | $502,780 | [ALT1848241](https://nearbypermits.com/boston/permit/ALT1848241/) |
| Jun 4, 2026 | [69-71 Starbird Av](https://nearbypermits.com/boston/address/69--71-starbird-av/) | 970 ft SE | Alteration or repair | Replace cabinets and change tub to shower | $44,000 | [SF1857896](https://nearbypermits.com/boston/permit/SF1857896/) |
| Jun 4, 2026 | [69-71 Starbird Av](https://nearbypermits.com/boston/address/69--71-starbird-av/) | 970 ft SE | Plumbing | Change out tub for shower. | $4,000 | [PL1857585](https://nearbypermits.com/boston/permit/PL1857585/) |
| Jun 4, 2026 | [12 Palfrey St](https://nearbypermits.com/boston/address/12-palfrey-st/) | 790 ft SW | Alteration or repair | Install Foundation Push Pier(s) | $55,000 | [ALT1852700](https://nearbypermits.com/boston/permit/ALT1852700/) |
| Jun 2, 2026 | [36 Sammett Av](https://nearbypermits.com/boston/address/36-sammett-av/) | 730 ft SE | Electrical | Low voltage alarm install | $1,200 | [ELV1856609](https://nearbypermits.com/boston/permit/ELV1856609/) |
| May 20, 2026 | [224 Florence St](https://nearbypermits.com/boston/address/224-florence-st/) | 480 ft W | Electrical | add outlets on a new wall, and install switch install 6 recessed lights and 1 recessed light on closet | $1,800 | [E1850570](https://nearbypermits.com/boston/permit/E1850570/) |
| May 14, 2026 | [14 Wyvern St](https://nearbypermits.com/boston/address/14-wyvern-st/) | 950 ft N | Alteration or repair | Removing and replacing 4 windows, replacing like with like, no structural changes. | $4,236 | [SF1846629](https://nearbypermits.com/boston/permit/SF1846629/) |
| May 11, 2026 | [36 Sammett Av](https://nearbypermits.com/boston/address/36-sammett-av/) | 730 ft SE | Solar | Installation of roof mounted solar pv - 17 panels - 6.97kW DC. No ESS/No Structural. | $54,102 | [SF1847380](https://nearbypermits.com/boston/permit/SF1847380/) |
| May 11, 2026 | [36 Sammett Av](https://nearbypermits.com/boston/address/36-sammett-av/) | 730 ft SE | Solar | Installation of roof mounted solar pv - 17 panels - 6.97kW DC. No ESS | $37,872 | [E1847384](https://nearbypermits.com/boston/permit/E1847384/) |
| May 7, 2026 | [483-497 Hyde Park Av](https://nearbypermits.com/boston/address/483--497-hyde-park-av/) | 750 ft S | Alteration or repair | Mass Save Insulation | $4,854 | [SF1844929](https://nearbypermits.com/boston/permit/SF1844929/) |
| May 5, 2026 | [446-450 Hyde Park Av](https://nearbypermits.com/boston/address/446--450-hyde-park-av/) | 390 ft S | Fire systems | Installing fire alarm system Two pull stations Two smoke Three horns strobes One cooking hood One beacon One strobe only | $4,000 | [EFA1846002](https://nearbypermits.com/boston/permit/EFA1846002/) |

### Farther (1,000 ft to ¼ mi), 30 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | [29 Rowe St](https://nearbypermits.com/boston/address/29-rowe-st/) | 0.21 mi SW | New building | Erect two (2) family structure on existing 4,104 square foot lot with parking for 2 vehicles in enclosed garage.;Permit application is under the;10th Edition.;E[plans] Filed.; | $150,000 | [ERT1748690](https://nearbypermits.com/boston/permit/ERT1748690/) |
| Sep 21, 2026 | [348-350 Hyde Park Av](https://nearbypermits.com/boston/address/348--350-hyde-park-av/) | 0.20 mi N | Mechanical (HVAC) | Installing 5 zone ductless mini split system | $26,507 | [SF1897829](https://nearbypermits.com/boston/permit/SF1897829/) |
| Sep 19, 2026 | [171 Sycamore St](https://nearbypermits.com/boston/address/171-sycamore-st/) | 0.24 mi W | Alteration or repair | Renovation of the existing kitchen and first-floor half bathroom. selective demolition, framing and carpentry modifications, insulation, drywall, plaster repairs, painting, new mep's, kitchen cabinet installation. | $95,493 | [SF1883331](https://nearbypermits.com/boston/permit/SF1883331/) |
| Sep 16, 2026 | [42 Starbird Av](https://nearbypermits.com/boston/address/42-starbird-av/) | 0.21 mi SE | Alteration or repair | Install 2 replacement windows - no structural work | $2,833 | [SF1900536](https://nearbypermits.com/boston/permit/SF1900536/) |
| Sep 16, 2026 | [169 Sycamore St](https://nearbypermits.com/boston/address/169-sycamore-st/) | 0.24 mi W | Alteration or repair | Remove 1 existing door and replace with 1 new door. No structural work. Work to take place in unit 1 | $2,664 | [SF1897747](https://nearbypermits.com/boston/permit/SF1897747/) |
| Sep 15, 2026 | [171 Sycamore St](https://nearbypermits.com/boston/address/171-sycamore-st/) | 0.24 mi W | Roofing | Removal and replacement of existing roofing system with new asphalt shingles, including all necessary accessories to ensure a complete and watertight installation. | $4,800 | [SF1899346](https://nearbypermits.com/boston/permit/SF1899346/) |
| Sep 14, 2026 | [51-53 Catherine St](https://nearbypermits.com/boston/address/51--53-catherine-st/) | 0.22 mi NE | Solar | Install 8.6kW DC (20 panels) rooftop solar array | $27,658 | [SF1896479](https://nearbypermits.com/boston/permit/SF1896479/) |
| Sep 4, 2026 | [51-53 Catherine St](https://nearbypermits.com/boston/address/51--53-catherine-st/) | 0.22 mi NE | Solar | Install 8.6kW DC (20 panels) rooftop solar array | $18,439 | [E1896483](https://nearbypermits.com/boston/permit/E1896483/) |
| Sep 9, 2026 | [348-350 Hyde Park Av](https://nearbypermits.com/boston/address/348--350-hyde-park-av/) | 0.20 mi N | Electrical | Wiring condenser for ductless mini split system | $1,500 | [E1897828](https://nearbypermits.com/boston/permit/E1897828/) |
| Aug 26, 2026 | [171 Sycamore St](https://nearbypermits.com/boston/address/171-sycamore-st/) | 0.24 mi W | Solar | Installation of roof mounted photovoltaic solar systems, 6.97 KW 17 panels with installation of 1 franklin battery storage installed on exterior of home | $62,100 | [SF1890467](https://nearbypermits.com/boston/permit/SF1890467/) |
| Aug 24, 2026 | [171 Sycamore St](https://nearbypermits.com/boston/address/171-sycamore-st/) | 0.24 mi W | Solar | Installation of roof mounted photovoltaic solar systems, 6.97 KW 17 panels with installation of 1 franklin battery storage installed on exterior of home | $62,100 | [E1890470](https://nearbypermits.com/boston/permit/E1890470/) |
| Aug 26, 2026 | [24 Destefano Rd](https://nearbypermits.com/boston/address/24-destefano-rd/) | 0.19 mi S | Fence, wall or deck | Install 6ft vinyl fence on property line | $1,000 | [ALT1894745](https://nearbypermits.com/boston/permit/ALT1894745/) |
| Aug 19, 2026 | [167 Sycamore St](https://nearbypermits.com/boston/address/167-sycamore-st/) | 0.24 mi W | Electrical | - Demo bx circuits. - Rewire with romex. | $7,000 | [E1877949](https://nearbypermits.com/boston/permit/E1877949/) |
| Aug 18, 2026 | [171 Sycamore St](https://nearbypermits.com/boston/address/171-sycamore-st/) | 0.24 mi W | Electrical | Service Conductor Refeed - Replacing existing meter and service disconnect to address code violations | $2,000 | [E1887323](https://nearbypermits.com/boston/permit/E1887323/) |
| Aug 6, 2026 | [108 Neponset Av](https://nearbypermits.com/boston/address/108-neponset-av/) | 0.24 mi E | Electrical | Upgrade service from 100amp to 200amp. | $3,500 | [E1882895](https://nearbypermits.com/boston/permit/E1882895/) |
| Jul 31, 2026 | [108 Neponset Av](https://nearbypermits.com/boston/address/108-neponset-av/) | 0.24 mi E | Alteration or repair | Asbesots Contractor to remove all siding with Licensed Supervisor and workers. Remove all gutters, fascia boards, window and door trims. Install new everlast compsite siding. Install new composite facia board, window trims door trims and Aluminum gutters. Replace front door. | $57,395 | [SF1880587](https://nearbypermits.com/boston/permit/SF1880587/) |
| Jul 29, 2026 | [348-350 Hyde Park Av](https://nearbypermits.com/boston/address/348--350-hyde-park-av/) | 0.20 mi N | Alteration or repair | Insulation for 348-350 Hyde Park Ave #3 | $4,261 | [SF1874690](https://nearbypermits.com/boston/permit/SF1874690/) |
| Jul 29, 2026 | [348-350 Hyde Park Av](https://nearbypermits.com/boston/address/348--350-hyde-park-av/) | 0.20 mi N | Alteration or repair | Insulation for 348-350 Hyde Park Ave #2 | $3,940 | [SF1874686](https://nearbypermits.com/boston/permit/SF1874686/) |
| Jul 29, 2026 | [348-350 Hyde Park Av](https://nearbypermits.com/boston/address/348--350-hyde-park-av/) | 0.20 mi N | Alteration or repair | Weatherization, Insulation, Air Sealing for 348-350 Hyde Park Ave #1 | $4,412 | [SF1874680](https://nearbypermits.com/boston/permit/SF1874680/) |
| Jul 6, 2026 | [8 Wyvern St](https://nearbypermits.com/boston/address/8-wyvern-st/) | 0.19 mi N | Plumbing | Retest | $500 | [G1868721](https://nearbypermits.com/boston/permit/G1868721/) |
| Jul 2, 2026 | [20 Byrd Av](https://nearbypermits.com/boston/address/20-byrd-av/) | 0.20 mi E | Alteration or repair | Tub to shower conversion in 1st floor bathroom, install flooring. | $20,970 | [SF1864213](https://nearbypermits.com/boston/permit/SF1864213/) |
| Jun 29, 2026 | [20 Byrd Av](https://nearbypermits.com/boston/address/20-byrd-av/) | 0.20 mi E | Plumbing | Tub to shower conversion in 1st floor bathroom, remove/replace toilet & lav | $2,500 | [PL1864214](https://nearbypermits.com/boston/permit/PL1864214/) |
| Jun 17, 2026 | [54 Catherine St](https://nearbypermits.com/boston/address/54-catherine-st/) | 0.20 mi NE | Plumbing | water piping for boiler replacement | $950 | [PL1860568](https://nearbypermits.com/boston/permit/PL1860568/) |
| Jun 17, 2026 | [54 Catherine St](https://nearbypermits.com/boston/address/54-catherine-st/) | 0.20 mi NE | Plumbing | gas boiler replacement | $3,500 | [G1860567](https://nearbypermits.com/boston/permit/G1860567/) |
| Jun 5, 2026 | [185 Sycamore St](https://nearbypermits.com/boston/address/185-sycamore-st/) | 0.22 mi W | Alteration or repair | Residential weatherization/air sealing. No structural changes. (Site ID-864354) | $2,000 | [SF1856242](https://nearbypermits.com/boston/permit/SF1856242/) |
| May 15, 2026 | [50 Catherine St](https://nearbypermits.com/boston/address/50-catherine-st/) | 0.21 mi NE | Electrical | mini split wiring | $1,350 | [E1822702](https://nearbypermits.com/boston/permit/E1822702/) |
| May 14, 2026 | [1 Prospect Av](https://nearbypermits.com/boston/address/1-prospect-av/) | 0.20 mi SW | Electrical | EV charger | $1,366 | [E1848791](https://nearbypermits.com/boston/permit/E1848791/) |
| May 6, 2026 | [34 Catherine St](https://nearbypermits.com/boston/address/34-catherine-st/) | 0.24 mi NE | Plumbing | Replacement of gas water heater only at 34 Catherine St #6 | $2,132 | [PL1846248](https://nearbypermits.com/boston/permit/PL1846248/) |
| May 6, 2026 | [34 Catherine St](https://nearbypermits.com/boston/address/34-catherine-st/) | 0.24 mi NE | Plumbing | Replacement of gas water heater at 34 Catherine St #6 | $2,132 | [G1846246](https://nearbypermits.com/boston/permit/G1846246/) |
| May 4, 2026 | [24 Destefano Rd](https://nearbypermits.com/boston/address/24-destefano-rd/) | 0.19 mi S | Electrical | Low voltage alarm install | $1,200 | [ELV1844680](https://nearbypermits.com/boston/permit/ELV1844680/) |

## Zoning requests nearby

There are no zoning requests on file within ¼ mi. Boston's feed was last read Oct 10.

## More on this street

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

- [40 Philbrick St](https://nearbypermits.com/boston/address/40-philbrick-st/): newest permit Oct 9, 2024

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-10 21:15 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 10, 15:17 UTC.

Map, all 4 permits at this address and 69 nearby: https://nearbypermits.com/boston/address/21-philbrick-st/