# Building permits at 800 River St, Boston, MA

The biggest project within a quarter mile since May 1: a $344,670 alteration or repair at 5 Mercer St, permitted Sep 15.

12 permits on record here. The newest, Aug 10: Commercial rooftop installation 146.34kW solar system. Within a quarter mile, the city has issued 50 more permits (46 projects) since May 1.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Aug 10, 2026 | Solar | Commercial rooftop installation 146.34kW solar system | $112,755 | [ALT1859899](https://nearbypermits.com/boston/permit/ALT1859899/) |
| Jun 30, 2026 | Solar | Commercial rooftop solar installation of 146.34kW solar system | $56,691 | [E1859921](https://nearbypermits.com/boston/permit/E1859921/) |
| Jul 13, 2021 | Sign | Replace (3) existing Building Signs with (3) New Building Signs (each is 3'4"H x 16'6"W). Re-face (1) existing D/F Pylon Sign Box. [ePlan] | $6,250 | [ALT1156255](https://nearbypermits.com/boston/permit/ALT1156255/) |
| Dec 17, 2019 | Solar | Wire and install 134 pv solar panels roof mounted on 52.93 kW system with 2 inverters and disconnect. | $8,181 | [ALT1029547](https://nearbypermits.com/boston/permit/ALT1029547/) |
| Nov 4, 2019 | Solar | To wire and install 134 roof mounted solar panels along with 2 inverters and disconnect. | $5,454 | [E1013565](https://nearbypermits.com/boston/permit/E1013565/) |
| Sep 20, 2010 | Sign | Remove two existing signs one reading "boxes and truck rental"; one reading "box mart".; Install new 2' - 6" x 17' signs reading "Public Storage";over front entrance. | $8,000 | [ALT36108](https://nearbypermits.com/boston/permit/ALT36108/) |
| Aug 27, 2010 | Electrical | Access System Installation. Installation of keypad access. | $5,800 | [ELV39879](https://nearbypermits.com/boston/permit/ELV39879/) |
| Jul 21, 2010 | Electrical | Install a monitored security system | $2,000 | [ELV33230](https://nearbypermits.com/boston/permit/ELV33230/) |
| Jun 28, 2010 | Alteration or repair | remodel of front office, public storage | $2,500 | [E31421](https://nearbypermits.com/boston/permit/E31421/) |
| Jun 14, 2010 | Plumbing | break room and laundry room renovations | $4,500 | [PL29586](https://nearbypermits.com/boston/permit/PL29586/) |
| Apr 26, 2010 | Electrical | wire 9 new gas heaters, temp wire trailer | $3,200 | [E23180](https://nearbypermits.com/boston/permit/E23180/) |
| Apr 23, 2010 | Plumbing | Replace 9 unit heaters on 2nd &; 3rd floors. | Not listed | [G22477](https://nearbypermits.com/boston/permit/G22477/) |

## Within ¼ mi since May 1, 2026

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

### This block (250 to 1,000 ft), 34 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 2, 2026 | [25 Agnes Av](https://nearbypermits.com/boston/address/25-agnes-av/) | 320 ft SW | Alteration or repair | Repairs to roof and blocking of walls. | $18,000 | [SF1904595](https://nearbypermits.com/boston/permit/SF1904595/) |
| Sep 21, 2026 | [20 Osceola St](https://nearbypermits.com/boston/address/20-osceola-st/) | 930 ft E | Electrical | Install SPAN panel and replace service disconnect | $8,200 | [E1902450](https://nearbypermits.com/boston/permit/E1902450/) |
| Sep 21, 2026 | [20 Osceola St](https://nearbypermits.com/boston/address/20-osceola-st/) | 930 ft E | Solar | Installation of roof mounted photovoltaic solar systems, 7.79 kw 19 panels with installation of 1 Tesla powerwall3 battery installed on exterior of home | $61,500 | [E1902086](https://nearbypermits.com/boston/permit/E1902086/) |
| Sep 15, 2026 | [5 Mercer St](https://nearbypermits.com/boston/address/5-mercer-st/) | 850 ft N | Alteration or repair | ;During the review process, the City of Boston advised that a separate permit for lot consolidation; | $344,670 | [ALT1806399](https://nearbypermits.com/boston/permit/ALT1806399/) |
| Sep 14, 2026 | [314 Wood Av](https://nearbypermits.com/boston/address/314-wood-av/) | 750 ft W | Plumbing | add a new bathroom in the basement | $4,500 | [PL1900902](https://nearbypermits.com/boston/permit/PL1900902/) |
| Sep 10, 2026 | [39 Blake St](https://nearbypermits.com/boston/address/39-blake-st/) | 980 ft N | Electrical | Installing a 5 indoor unit mini split system | $33,000 | [E1896418](https://nearbypermits.com/boston/permit/E1896418/) |
| Sep 10, 2026 | [16 Blake St](https://nearbypermits.com/boston/address/16-blake-st/) | 530 ft NW | Alteration or repair | Adding a room two bathrooms and an exercise room into the basement; | $125,000 | [ALT1878774](https://nearbypermits.com/boston/permit/ALT1878774/) |
| Sep 4, 2026 | [20 Oakcrest Rd](https://nearbypermits.com/boston/address/20-oakcrest-rd/) | 540 ft NE | Electrical | Installation of 1 Tesla powerwall3 battery installed on exterior of home | $10,000 | [SF1894613](https://nearbypermits.com/boston/permit/SF1894613/) |
| Sep 4, 2026 | [20 Oakcrest Rd](https://nearbypermits.com/boston/address/20-oakcrest-rd/) | 540 ft NE | Electrical | Installation of 1 Tesla powerwall3 battery installed on exterior of home | $10,000 | [E1894616](https://nearbypermits.com/boston/permit/E1894616/) |
| Aug 28, 2026 | [39 Blake St](https://nearbypermits.com/boston/address/39-blake-st/) | 980 ft N | Alteration or repair | Insulation work as part of the MASS Save program. | $9,000 | [SF1886101](https://nearbypermits.com/boston/permit/SF1886101/) |
| Aug 26, 2026 | [7 Hopewell Rd](https://nearbypermits.com/boston/address/7-hopewell-rd/) | 980 ft SE | Electrical | Upgrade the existing service from 100 amps to 200 amps and relocated the panel breaker from inside the bathroom to new Location. | $4,000 | [E1891452](https://nearbypermits.com/boston/permit/E1891452/) |
| Aug 24, 2026 | [310 Wood Av](https://nearbypermits.com/boston/address/310-wood-av/) | 780 ft W | Electrical | Service upgrade to 200 amps Add public meter | $7,500 | [E1887990](https://nearbypermits.com/boston/permit/E1887990/) |
| Aug 11, 2026 | [14 Oakcrest Rd](https://nearbypermits.com/boston/address/14-oakcrest-rd/) | 490 ft NE | Plumbing | install: toilets, lavs, showers, kitchen sink and tubs | $1,400 | [PL1862835](https://nearbypermits.com/boston/permit/PL1862835/) |
| Jul 22, 2026 | [17 Blake St](https://nearbypermits.com/boston/address/17-blake-st/) | 530 ft NW | Plumbing | boiler | $6,000 | [G1874389](https://nearbypermits.com/boston/permit/G1874389/) |
| Jul 21, 2026 | [17 Blake St](https://nearbypermits.com/boston/address/17-blake-st/) | 530 ft NW | Electrical | Steam boiler wiring | $800 | [E1874240](https://nearbypermits.com/boston/permit/E1874240/) |
| Jul 21, 2026 | [12 Osceola St](https://nearbypermits.com/boston/address/12-osceola-st/) | 860 ft E | Electrical | Main panel replacement | $2,500 | [E1872330](https://nearbypermits.com/boston/permit/E1872330/) |
| Jul 1, 2026 | [6 Frazer St](https://nearbypermits.com/boston/address/6-frazer-st/) | 940 ft W | Electrical | Adding public meter. | $7,500 | [E1867808](https://nearbypermits.com/boston/permit/E1867808/) |
| Jun 25, 2026 | [19-21 Osceola St](https://nearbypermits.com/boston/address/19--21-osceola-st/) | 780 ft E | Plumbing | replace heating boiler | $5,000 | [PL1863345](https://nearbypermits.com/boston/permit/PL1863345/) |
| Jun 25, 2026 | [19-21 Osceola St](https://nearbypermits.com/boston/address/19--21-osceola-st/) | 780 ft E | Plumbing | replace heating boiler | $5,000 | [G1863341](https://nearbypermits.com/boston/permit/G1863341/) |
| Jun 24, 2026 | [720 River St](https://nearbypermits.com/boston/address/720-river-st/) | 1,000 ft E | Electrical | Replace (1) receptacle and box in the living room due to damage. Replace breaker panel and install AFCI breaker in Unit #43 | $1,100 | [E1863707](https://nearbypermits.com/boston/permit/E1863707/) |
| Jun 18, 2026 | [25 Blake St](https://nearbypermits.com/boston/address/25-blake-st/) | 700 ft NW | Electrical | Replace bath exhaust fan | $1,200 | [E1860525](https://nearbypermits.com/boston/permit/E1860525/) |
| Jun 15, 2026 | [314 Wood Av](https://nearbypermits.com/boston/address/314-wood-av/) | 750 ft W | Electrical | 1st fl lvg.rm ext install 10 ea 120v rec's/ install 8ea recessed lgt's w/3ea sw's.2nd fl office,bathroom and closet ext(office.install 4ea rec's and 4ea recessed lgt's,bathroom,install 2ea rec's, 2ea recessed lgt's, 1ea vanity lgt and 1ea bathroom fan/lgt. closet,install 1ea rec and 3ea lgt's | $5,500 | [E1861086](https://nearbypermits.com/boston/permit/E1861086/) |
| Jun 8, 2026 | [12 Osceola St](https://nearbypermits.com/boston/address/12-osceola-st/) | 860 ft E | Solar | Installation of roof mounted photovoltaic solar systems, 4.1 Kw 10 panels with installation of 1 franklin battery installed on exterior of home | $48,600 | [SF1851626](https://nearbypermits.com/boston/permit/SF1851626/) |
| May 26, 2026 | [12 Osceola St](https://nearbypermits.com/boston/address/12-osceola-st/) | 860 ft E | Solar | Installation of roof mounted photovoltaic solar systems, 4.1 Kw 10 panels with installation of 1 franklin battery installed on exterior of home | $48,600 | [E1851627](https://nearbypermits.com/boston/permit/E1851627/) |
| Jun 4, 2026 | [25 George St](https://nearbypermits.com/boston/address/25-george-st/) | 760 ft NW | Electrical | 1) new sub panel for garage. 2) new lighting and plugs for garage. 3) new underground feeder in trench for garage power. 4) new 1/2 PVC conduit for low voltage cable. | $4,500 | [E1857300](https://nearbypermits.com/boston/permit/E1857300/) |
| Jun 3, 2026 | [14 Oakcrest Rd](https://nearbypermits.com/boston/address/14-oakcrest-rd/) | 490 ft NE | Fire systems | Add 6 smokes 2 combo | $4,000 | [EFA1857478](https://nearbypermits.com/boston/permit/EFA1857478/) |
| Jun 3, 2026 | [14 Oakcrest Rd](https://nearbypermits.com/boston/address/14-oakcrest-rd/) | 490 ft NE | Electrical | Rewire whole house with 2 bedrooms, 2 full bath, 1 half bath, kitchen, dining room, livingroom, playroom in basement. Upgrad service from 100amp to 200 amp. | $20,000 | [E1857476](https://nearbypermits.com/boston/permit/E1857476/) |
| Jun 1, 2026 | [25 Blake St](https://nearbypermits.com/boston/address/25-blake-st/) | 700 ft NW | Alteration or repair | Insulation work as part of the MASS Save program. | $8,000 | [SF1846912](https://nearbypermits.com/boston/permit/SF1846912/) |
| May 26, 2026 | [15 Mercer St](https://nearbypermits.com/boston/address/15-mercer-st/) | 920 ft N | Electrical | Replace meter bank from a 3 gang to a 4 gang to add a public meter space. New electrical meter will be installed while the power is off to the home. Electrical meter will be supported and wired per code. Conduits will be reinstalled into the meter. | $5,120 | [E1852898](https://nearbypermits.com/boston/permit/E1852898/) |
| May 21, 2026 | [6 Linden Av](https://nearbypermits.com/boston/address/6-linden-av/) | 410 ft N | Plumbing | Sewage ejector toilet vantu shower in basement | $6,000 | [PL1848912](https://nearbypermits.com/boston/permit/PL1848912/) |
| May 14, 2026 | [25 Belnel Rd](https://nearbypermits.com/boston/address/25-belnel-rd/) | 500 ft SE | Plumbing | Plumbing of electric water heater | $2,000 | [PL1848001](https://nearbypermits.com/boston/permit/PL1848001/) |
| May 11, 2026 | [25 Belnel Rd](https://nearbypermits.com/boston/address/25-belnel-rd/) | 500 ft SE | Electrical | Upgrade service from 100amps to 200 amps. Wire 3.5 ton outdoor condenser with disconnect. Wire electric water heater | $5,000 | [E1847880](https://nearbypermits.com/boston/permit/E1847880/) |
| May 6, 2026 | [9 Coronado Rd](https://nearbypermits.com/boston/address/9-coronado-rd/) | 570 ft E | Plumbing | Water heater replacement. | $5,000 | [PL1844645](https://nearbypermits.com/boston/permit/PL1844645/) |
| May 6, 2026 | [9 Coronado Rd](https://nearbypermits.com/boston/address/9-coronado-rd/) | 570 ft E | Electrical | Service upgrade from 100 to 200 amps. Panel upgrade to add more slots. Connections to (2) exterior condensers, (1) air handler, and 3 floor mounted heads, and hybrid DHW. | $30,000 | [E1846190](https://nearbypermits.com/boston/permit/E1846190/) |

### Farther (1,000 ft to ¼ mi), 16 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 25, 2026 | [47 Blake St](https://nearbypermits.com/boston/address/47-blake-st/) | 0.20 mi N | Solar | Installation of roof mounted photovoltaic solar systems, 4.1 kw 10 panels with installation of 1 tesla powerwall3 battery installed on exterior of home | $36,600 | [E1904139](https://nearbypermits.com/boston/permit/E1904139/) |
| Sep 22, 2026 | [1-3 Locust St](https://nearbypermits.com/boston/address/1--3-locust-st/) | 0.19 mi N | Electrical | Basement ADU. Service upgrade adding two meters | $22,000 | [E1894507](https://nearbypermits.com/boston/permit/E1894507/) |
| Sep 18, 2026 | [43 Wachusett St](https://nearbypermits.com/boston/address/43-wachusett-st/) | 0.23 mi E | Alteration or repair | to construct a 10x12 storage shed not to be lived in or for commercial use | $6,799 | [ALT1896189](https://nearbypermits.com/boston/permit/ALT1896189/) |
| Sep 9, 2026 | [92 Radcliffe Rd](https://nearbypermits.com/boston/address/92-radcliffe-rd/) | 0.21 mi N | Alteration or repair | repair the front entry steps | $3,500 | [SF1890144](https://nearbypermits.com/boston/permit/SF1890144/) |
| Aug 27, 2026 | [120 Belnel Rd](https://nearbypermits.com/boston/address/120-belnel-rd/) | 0.22 mi SE | Addition | Build an addition to the second floor to include Two Bedroom and Two bathroom, Second floor elevation | $100,000 | [ALT1890847](https://nearbypermits.com/boston/permit/ALT1890847/) |
| Aug 6, 2026 | [15 Massasoit St](https://nearbypermits.com/boston/address/15-massasoit-st/) | 0.23 mi E | Electrical | Provide one 15A, underground circuit for the gazebo outside. | $2,500 | [E1882951](https://nearbypermits.com/boston/permit/E1882951/) |
| Jul 22, 2026 | [13 Joyce Rd](https://nearbypermits.com/boston/address/13-joyce-rd/) | 0.24 mi NW | Alteration or repair | To insulate attic with blown in cellulose insulation. | $3,842 | [SF1860904](https://nearbypermits.com/boston/permit/SF1860904/) |
| Jul 21, 2026 | [43 Wachusett St](https://nearbypermits.com/boston/address/43-wachusett-st/) | 0.23 mi E | Alteration or repair | adding a porch cover to the front entrance - only | $7,000 | [ALT1772316](https://nearbypermits.com/boston/permit/ALT1772316/) |
| Jul 17, 2026 | [67 Oakcrest Rd](https://nearbypermits.com/boston/address/67-oakcrest-rd/) | 0.21 mi NE | Alteration or repair | insulating exterior walls using cellulose R15. insulating and air sealing attic, adding cellulose to bring R value to R49. insulating basement rim joists with fiberglass R19. | $6,911 | [SF1862062](https://nearbypermits.com/boston/permit/SF1862062/) |
| Jul 14, 2026 | [1-3 Locust St](https://nearbypermits.com/boston/address/1--3-locust-st/) | 0.19 mi N | Solar | We are removing 13 current solar panels due to roof work, as well reinstalling once roof work is completed. Removal & Reinstall. We are not the roofers. No upgrades, no changes. No ground electrical will be touched. | $1,690 | [SF1868235](https://nearbypermits.com/boston/permit/SF1868235/) |
| Jul 9, 2026 | [43 Wachusett St](https://nearbypermits.com/boston/address/43-wachusett-st/) | 0.23 mi E | Solar | Installation of roof mounted photovoltaic solar systems, 6.56 kw 16 panels NO BATTERY STORAGE | $54,900 | [SF1864360](https://nearbypermits.com/boston/permit/SF1864360/) |
| Jun 26, 2026 | [43 Wachusett St](https://nearbypermits.com/boston/address/43-wachusett-st/) | 0.23 mi E | Solar | Installation of roof mounted photovoltaic solar systems, 6.56 kw 16 panels NO BATTERY STORAGE | $54,900 | [E1864361](https://nearbypermits.com/boston/permit/E1864361/) |
| Jul 8, 2026 | [125 Belnel Rd](https://nearbypermits.com/boston/address/125-belnel-rd/) | 0.25 mi SE | Solar | Installation of roof mounted photovoltaic solar systems, 4.1 kw 10 panels with installation of 1 franklin battery installed on exterior of home | $53,700 | [E1869574](https://nearbypermits.com/boston/permit/E1869574/) |
| Jul 6, 2026 | [1-3 Locust St](https://nearbypermits.com/boston/address/1--3-locust-st/) | 0.19 mi N | Solar | We are removing 13 current solar panels for emergency repairs, as well reinstalling once roof work is completed. Removal & Reinstall. We are not the roofers. No upgrades, No changes. No ground electrical will be touched. The system will be reinstalled as originally installed. | $1,690 | [E1868302](https://nearbypermits.com/boston/permit/E1868302/) |
| May 22, 2026 | [96a-96 Radcliffe Rd](https://nearbypermits.com/boston/address/96a--96-radcliffe-rd/) | 0.21 mi N | Electrical | Upgrade service from existing service 100amp to 200amp move all the meter gang outdoor, replace two new panels | $9,800 | [E1852528](https://nearbypermits.com/boston/permit/E1852528/) |
| May 20, 2026 | [1-3 Locust St](https://nearbypermits.com/boston/address/1--3-locust-st/) | 0.19 mi N | Roofing | Strip and re-roof 16sq 1 layer | $10,323 | [SF1848122](https://nearbypermits.com/boston/permit/SF1848122/) |

## More on this street

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

- [797-801 River St](https://nearbypermits.com/boston/address/797--801-river-st/): newest permit Dec 5, 2025
- [812 River St](https://nearbypermits.com/boston/address/812-river-st/): newest permit Nov 1, 2024
- [819 River St](https://nearbypermits.com/boston/address/819-river-st/): newest permit May 23, 2025
- [821 River St](https://nearbypermits.com/boston/address/821-river-st/): newest permit Dec 11, 2025
- [850 River St](https://nearbypermits.com/boston/address/850-river-st/): newest permit Oct 14, 2025
- [750 River St](https://nearbypermits.com/boston/address/750-river-st/): newest permit Jan 30, 2025
- [720 River St](https://nearbypermits.com/boston/address/720-river-st/): newest permit Jun 24, 2026
- [715 River St](https://nearbypermits.com/boston/address/715-river-st/): newest permit May 7, 2025
- [885 River St](https://nearbypermits.com/boston/address/885-river-st/): newest permit Jun 27, 2025
- [714 River St](https://nearbypermits.com/boston/address/714-river-st/): newest permit Jul 22, 2025

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-07 16:46 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Map, all 12 permits at this address and 50 nearby: https://nearbypermits.com/boston/address/800-river-st/