# Building permits at 166 Walnut St, Boston, MA The biggest project within a quarter mile since May 1: a $7.4M new building at 173-175 Walnut St, permitted Jun 3. Nine permits on record here. The newest, Feb 5, 2025: Install new water heater. Within a quarter mile, the city has issued 10 more permits since May 1. One is for a new building, 260 ft away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Feb 5, 2025 | Plumbing | install new water heater | $400 | [PL1689524](https://nearbypermits.com/boston/permit/PL1689524/) | | Feb 5, 2025 | Plumbing | install water heater | $800 | [G1689515](https://nearbypermits.com/boston/permit/G1689515/) | | Oct 17, 2024 | Alteration or repair | Install vinyl siding and window trim | $23,500 | [SF1659933](https://nearbypermits.com/boston/permit/SF1659933/) | | May 24, 2024 | Alteration or repair | Renovate 2 existing bathrooms and a laundry room. | $41,000 | [SF1584531](https://nearbypermits.com/boston/permit/SF1584531/) | | May 23, 2024 | Alteration or repair | Confirm occupancy of existing one family; | Not listed | [ALT1586246](https://nearbypermits.com/boston/permit/ALT1586246/) | | May 22, 2024 | Alteration or repair | Replace 25 Windows | $8,000 | [SF1602654](https://nearbypermits.com/boston/permit/SF1602654/) | | Apr 19, 2024 | Electrical | rewire 2 bathrooms | $3,000 | [E1591580](https://nearbypermits.com/boston/permit/E1591580/) | | Mar 26, 2024 | Plumbing | Renovation for 2-3 piece baths & a washing machine connection | $6,000 | [PL1583408](https://nearbypermits.com/boston/permit/PL1583408/) | | Jun 15, 2023 | Alteration or repair | Insulation work as part of the mass save program | $12,200 | [SF1484898](https://nearbypermits.com/boston/permit/SF1484898/) | ## Within ΒΌ mi since May 1, 2026 10 permits in the circle. From our copy of the city's data (last 24 months). ### Next door (under 250 ft), 1 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 10, 2026 | [152 Walnut St](https://nearbypermits.com/boston/address/152-walnut-st/) | 160 ft S | Plumbing | Gas furnace replacement | $2,500 | [G1895403](https://nearbypermits.com/boston/permit/G1895403/) | ### This block (250 to 1,000 ft), 9 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Aug 17, 2026 | [6-8 Water St](https://nearbypermits.com/boston/address/6--8-water-st/) | 710 ft S | Plumbing | Replacement of existing boiler & add drain in penthouse | $10,000 | [PL1887590](https://nearbypermits.com/boston/permit/PL1887590/) | | Aug 14, 2026 | [6-8 Water St](https://nearbypermits.com/boston/address/6--8-water-st/) | 710 ft S | Plumbing | Replacement of Boiler | $20,000 | [G1887593](https://nearbypermits.com/boston/permit/G1887593/) | | Jun 3, 2026 | [173-175 Walnut St](https://nearbypermits.com/boston/address/173--175-walnut-st/) | 260 ft NE | New building | Erect new 3-story, 14-unit, residential building w/garage on a vacant 19,823 sf lot. Building features side &; roof decks, and sprinkler &; fire alarm systems, as per plans submitted.eplan | $7,365,000 | [ERT1461641](https://nearbypermits.com/boston/permit/ERT1461641/) | | Jun 3, 2026 | [28 Port Norfolk St](https://nearbypermits.com/boston/address/28-port-norfolk-st/) | 260 ft SW | Electrical | Existing is 200 amp, 120/240 volt, 2-family service with no public bypass or emergency service disconnects. New service to be 200 amp, 120/240 volt, include public bypass meter and panel for shared areas. | $7,000 | [E1856061](https://nearbypermits.com/boston/permit/E1856061/) | | Jun 2, 2026 | [12r Ericsson St](https://nearbypermits.com/boston/address/12r-ericsson-st/) | 700 ft NW | Electrical | 25-056 - Power for containers to serve as drink garden on the greenway. (2) temp power feeds 30 and 50amp as specified (2) spider boxes and associated cords for connections to equipment, grounding and bonding as needed. | $27,000 | [E1856340](https://nearbypermits.com/boston/permit/E1856340/) | | Jun 1, 2026 | [12 Ericsson St](https://nearbypermits.com/boston/address/12-ericsson-st/) | 570 ft N | Electrical | Install 3 gang meter bank | $2,500 | [E1855363](https://nearbypermits.com/boston/permit/E1855363/) | | May 29, 2026 | [28 Port Norfolk St](https://nearbypermits.com/boston/address/28-port-norfolk-st/) | 260 ft SW | Roofing | Remove and replace existing roof shingles/ siddingincluding gutters and down spouts. | $21,500 | [SF1853806](https://nearbypermits.com/boston/permit/SF1853806/) | | May 13, 2026 | [50 Redfield St](https://nearbypermits.com/boston/address/50-redfield-st/) | 960 ft SW | Fire systems | Wiring for horn strobes with NAC power supply panel inside unit 102 on first floor. | $8,100 | [EFA1849033](https://nearbypermits.com/boston/permit/EFA1849033/) | | May 4, 2026 | [21 Lawley St](https://nearbypermits.com/boston/address/21-lawley-st/) | 500 ft SW | Alteration or repair | Install 3/8" foam insulation board. Install double 4" vinyl siding. Cover all trim fascia and soffit. Install 20 U28 DH thermopane windows. | $55,000 | [SF1842757](https://nearbypermits.com/boston/permit/SF1842757/) | ## More on this street Other addresses on Walnut St with permits, nearest house number first: - [169 Walnut St](https://nearbypermits.com/boston/address/169-walnut-st/): newest permit Feb 12, 2025 - [171 Walnut St](https://nearbypermits.com/boston/address/171-walnut-st/): newest permit Dec 5, 2024 - [173-175 Walnut St](https://nearbypermits.com/boston/address/173--175-walnut-st/): newest permit Jun 3, 2026 - [158 Walnut St](https://nearbypermits.com/boston/address/158-walnut-st/): newest permit Jul 22, 2025 - [152 Walnut St](https://nearbypermits.com/boston/address/152-walnut-st/): newest permit Sep 10, 2026 - [122 Walnut St](https://nearbypermits.com/boston/address/122-walnut-st/): newest permit Aug 26, 2025 - [119 Walnut St](https://nearbypermits.com/boston/address/119-walnut-st/): newest permit Aug 4, 2025 - [51 Walnut St](https://nearbypermits.com/boston/address/51-walnut-st/): newest permit May 22, 2026 - [12 Walnut St](https://nearbypermits.com/boston/address/12-walnut-st/): newest permit Mar 25, 2026 - [10 Walnut St](https://nearbypermits.com/boston/address/10-walnut-st/): newest permit Feb 4, 2026 --- Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-06 19:59 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, all 9 permits at this address and 10 nearby: https://nearbypermits.com/boston/address/166-walnut-st/