# Building permits at 27-29 Mapleton St, Boston, MA

The biggest project within a quarter mile since May 1: a $664,800 project at 329-343 Washington St, permitted Jun 10.

Three permits on record here. The newest, Apr 21: House is being insulated so we are adding outlets to external walls in 4 bedrooms also wiring a heat pump. Within a quarter mile, the city has issued 66 more permits (64 projects) since May 1.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Apr 21, 2026 | Electrical | House is being insulated so we are adding outlets to external walls in 4 bedrooms also wiring a heat pump | $5,000 | [E1841100](https://nearbypermits.com/boston/permit/E1841100/) |
| Feb 27, 2026 | Alteration or repair | Remove existing interior plaster and trim, Install new insulation to exterior walls to two rooms and associated work | $20,000 | [SF1818423](https://nearbypermits.com/boston/permit/SF1818423/) |
| Mar 7, 2014 | Plumbing | Separate sanitary waste from storm waste. | $800 | [PL338838](https://nearbypermits.com/boston/permit/PL338838/) |

## Within ¼ mi since May 1, 2026

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

### This block (250 to 1,000 ft), 30 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | [56 Murdock St](https://nearbypermits.com/boston/address/56-murdock-st/) | 710 ft E | Demolition | Demolish existing multifamilyDig Safe#20263209812 | $50,000 | [SF1896841](https://nearbypermits.com/boston/permit/SF1896841/) |
| Sep 22, 2026 | [283-285 Market St](https://nearbypermits.com/boston/address/283--285-market-st/) | 590 ft NW | Electrical | Upgrade 200 amp service ( no public meter) | $6,000 | [E1903114](https://nearbypermits.com/boston/permit/E1903114/) |
| Sep 21, 2026 | [59 Murdock St](https://nearbypermits.com/boston/address/59-murdock-st/) | 860 ft E | Plumbing | remove existing water heater (gas) and replace with a new water heater (gas) | $1,000 | [G1902057](https://nearbypermits.com/boston/permit/G1902057/) |
| Sep 14, 2026 | [27 Sparhawk St](https://nearbypermits.com/boston/address/27-sparhawk-st/) | 260 ft SW | Alteration or repair | Remodel kitchen and bathroom at 29 Sparhawk St, | $24,000 | [SF1899970](https://nearbypermits.com/boston/permit/SF1899970/) |
| Sep 9, 2026 | [238-242 Market St](https://nearbypermits.com/boston/address/238--242-market-st/) | 940 ft N | Plumbing | Kitchen remodeling - UNIT 108 | $2,000 | [PL1899333](https://nearbypermits.com/boston/permit/PL1899333/) |
| Sep 6, 2026 | [238-242 Market St](https://nearbypermits.com/boston/address/238--242-market-st/) | 940 ft N | Electrical | Install lighting throughout kitchen are, floor heat power Work to be done at 1 cypress st unit 108 | $2,000 | [E1897619](https://nearbypermits.com/boston/permit/E1897619/) |
| Sep 2, 2026 | [87 Etna St](https://nearbypermits.com/boston/address/87-etna-st/) | 580 ft NE | Electrical | Wire the new 3 bathroom. 1 bathroom for unit 1 2 bathroom for unit 2 | $4,500 | [E1896199](https://nearbypermits.com/boston/permit/E1896199/) |
| Aug 28, 2026 | [8-12 Seager Ct](https://nearbypermits.com/boston/address/8--12-seager-ct/) | 980 ft N | Alteration or repair | Replacing 3 existing double hung windows | $4,238 | [SF1894105](https://nearbypermits.com/boston/permit/SF1894105/) |
| Aug 27, 2026 | [87 Etna St](https://nearbypermits.com/boston/address/87-etna-st/) | 580 ft NE | Alteration or repair | Add 3 baths. Sand and Refinish wood floor and stairs. Replace 5 interior doors. Paint interior walls. | $30,000 | [SF1888807](https://nearbypermits.com/boston/permit/SF1888807/) |
| Aug 26, 2026 | [238-242 Market St](https://nearbypermits.com/boston/address/238--242-market-st/) | 940 ft N | Alteration or repair | Kitchen remodel - Work to be done at secondary address 1 Cypress Rd | $43,500 | [SF1874966](https://nearbypermits.com/boston/permit/SF1874966/) |
| Aug 13, 2026 | [64 Etna St](https://nearbypermits.com/boston/address/64-etna-st/) | 870 ft NE | Alteration or repair | Finish existing 3rd floor into 2 bedrooms with play area and legalize extension of living space into the basement area. Owner needs to apply for variance and needs rejection letter for 1. FAR, 2. Gross area, and 3. Usable open space. Please bill for permit reduced fee. | $83,450 | [ALT1603563](https://nearbypermits.com/boston/permit/ALT1603563/) |
| Jul 31, 2026 | [29 Henshaw St](https://nearbypermits.com/boston/address/29-henshaw-st/) | 750 ft SW | Plumbing | Remove existing furnace and replace with new furnace | $5,000 | [G1879706](https://nearbypermits.com/boston/permit/G1879706/) |
| Jul 28, 2026 | [15 Henshaw St](https://nearbypermits.com/boston/address/15-henshaw-st/) | 750 ft S | Alteration or repair | Residential weatherization/air sealing. No structural changes. (Site ID-866480) (Unit-3) | $3,000 | [SF1871068](https://nearbypermits.com/boston/permit/SF1871068/) |
| Jul 23, 2026 | [280 Market St](https://nearbypermits.com/boston/address/280-market-st/) | 470 ft NW | Alteration or repair | Basement renovation - create storage and living space, Laundry Room, flooring, framing, lighting | $30,000 | [ALT1845371](https://nearbypermits.com/boston/permit/ALT1845371/) |
| Jul 20, 2026 | [17 Sparhawk St](https://nearbypermits.com/boston/address/17-sparhawk-st/) | 280 ft S | Electrical | AC 2nd floor | $9,000 | [E1873069](https://nearbypermits.com/boston/permit/E1873069/) |
| Jun 11, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Electrical | catv, doorbell | $1,200 | [ELV1859150](https://nearbypermits.com/boston/permit/ELV1859150/) |
| Jun 11, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Fire systems | wire hard wired smoke detectors & combination CO detectors | $2,000 | [EFA1859149](https://nearbypermits.com/boston/permit/EFA1859149/) |
| Jun 11, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Electrical | Rewire 2 family, replace existing meter socket with new 3 gang meter socket 200 amps, rewire basement not living area | $35,000 | [E1859147](https://nearbypermits.com/boston/permit/E1859147/) |
| Jun 8, 2026 | [21-23 Elmira St](https://nearbypermits.com/boston/address/21--23-elmira-st/) | 370 ft N | Electrical | Loosen and resecure meter socket for new siding. | $300 | [E1858564](https://nearbypermits.com/boston/permit/E1858564/) |
| Jun 3, 2026 | [21-23 Elmira St](https://nearbypermits.com/boston/address/21--23-elmira-st/) | 370 ft N | Alteration or repair | Remove and replace with new vinyl siding with moisture paper and insulation underlayment | $52,000 | [SF1857169](https://nearbypermits.com/boston/permit/SF1857169/) |
| Jun 3, 2026 | [25 Arlington St](https://nearbypermits.com/boston/address/25-arlington-st/) | 840 ft W | Sign | Installing (1) 36"H x 48"W x 2"D HDU panel with carved and dimensional elements. Panel to be mounted with flatbar to (2) 4" square tube posts with pediment caps. Post and caps to be painted black. Top of posts to be 67" above grade. | $6,275 | [ALT1855502](https://nearbypermits.com/boston/permit/ALT1855502/) |
| Jun 1, 2026 | [74 Elmira St](https://nearbypermits.com/boston/address/74-elmira-st/) | 750 ft E | Alteration or repair | we are insulating the walls with cellulose also insulating the attic with cellulose and air seal also insulating the kneewall slope with 9" fiberglass and 2" rigid | $15,663 | [SF1852905](https://nearbypermits.com/boston/permit/SF1852905/) |
| Jun 1, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Plumbing | Renovating kitchen, bathroom and laundry | $12,000 | [PL1849682](https://nearbypermits.com/boston/permit/PL1849682/) |
| Jun 1, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Plumbing | Renovating kitchen, bathroom and laundry | $12,000 | [PL1849671](https://nearbypermits.com/boston/permit/PL1849671/) |
| Jun 1, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Plumbing | Replacing furnace and gas stove | $6,000 | [G1849693](https://nearbypermits.com/boston/permit/G1849693/) |
| Jun 1, 2026 | [43 Gardena St](https://nearbypermits.com/boston/address/43-gardena-st/) | 730 ft NE | Plumbing | Replacing furnace and gas stove | $6,000 | [G1849690](https://nearbypermits.com/boston/permit/G1849690/) |
| May 29, 2026 | [83 Etna St](https://nearbypermits.com/boston/address/83-etna-st/) | 610 ft NE | Alteration or repair | Repair of front porch and back deck. Demo and rebuild of 2 story front porch with new framing, decking, railings, stairs, and finishes. Demo and rebuild of back deck with new decking, railings, stairs, and finishes. | $10,500 | [SF1853807](https://nearbypermits.com/boston/permit/SF1853807/) |
| May 26, 2026 | [22-24 Arlington St](https://nearbypermits.com/boston/address/22--24-arlington-st/) | 820 ft W | Plumbing | Replace water heater in the basement | $1,800 | [PL1847529](https://nearbypermits.com/boston/permit/PL1847529/) |
| May 11, 2026 | [33 Murdock St](https://nearbypermits.com/boston/address/33-murdock-st/) | 810 ft SE | Electrical | Replacing existing 100 amp service with a new 200 amp service. Install new 40 space panel with Surge protection. Install new feeder and disconnect for condenser. | $5,800 | [E1847671](https://nearbypermits.com/boston/permit/E1847671/) |
| May 8, 2026 | [260-262 Market St](https://nearbypermits.com/boston/address/260--262-market-st/) | 670 ft N | Alteration or repair | Insulation work as part of the MASS Save program. Doing on two of the three units | $11,000 | [SF1846815](https://nearbypermits.com/boston/permit/SF1846815/) |

### Farther (1,000 ft to ¼ mi), 36 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | [396 Market St](https://nearbypermits.com/boston/address/396-market-st/) | 0.20 mi SW | Plumbing | Installing indirect drain on prep sink in basement | $500 | [PL1904758](https://nearbypermits.com/boston/permit/PL1904758/) |
| Oct 1, 2026 | [59 Leicester St](https://nearbypermits.com/boston/address/59-leicester-st/) | 0.21 mi W | Electrical | Replace existing service and add common meter, install new feeders and separate grounds and neutrals in load centers | $4,500 | [E1904835](https://nearbypermits.com/boston/permit/E1904835/) |
| Sep 29, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Electrical | Install 23 Data cables | $8,000 | [ELV1899251](https://nearbypermits.com/boston/permit/ELV1899251/) |
| Sep 23, 2026 | [22 Saybrook St](https://nearbypermits.com/boston/address/22-saybrook-st/) | 0.22 mi N | Roofing | Strip and re-roof | $11,500 | [SF1902187](https://nearbypermits.com/boston/permit/SF1902187/) |
| Aug 25, 2026 | [332 Washington St](https://nearbypermits.com/boston/address/332-washington-st/) | 0.24 mi SW | Electrical | Remove existing 200A defective meter socket with bypass. Install new 200A meter socket with bypass. | $1,800 | [E1894151](https://nearbypermits.com/boston/permit/E1894151/) |
| Aug 24, 2026 | [108 Murdock St](https://nearbypermits.com/boston/address/108-murdock-st/) | 0.22 mi NE | Fence, wall or deck | replace side entrance 3x5 deck and stairs | $4,600 | [SF1888206](https://nearbypermits.com/boston/permit/SF1888206/) |
| Aug 17, 2026 | [87 Murdock St](https://nearbypermits.com/boston/address/87-murdock-st/) | 0.19 mi E | Alteration or repair | Reinforce existing materials so that the necessary materials that need to be removed and replaced will be accessible. This will be done on both the front and rear triple decks as described on included contract. Remove all debris. (This application is to replace SF1886513 to correct mistakes made.) | $23,800 | [SF1886560](https://nearbypermits.com/boston/permit/SF1886560/) |
| Aug 7, 2026 | [329-343 Washington St](https://nearbypermits.com/boston/address/329--343-washington-st/) | 0.22 mi SW | Plumbing | Demo work only - Remove & cap existing gas pipe to 33 stoves and throughout building | $5,500 | [G1882982](https://nearbypermits.com/boston/permit/G1882982/) |
| Aug 4, 2026 | [59 Leicester St](https://nearbypermits.com/boston/address/59-leicester-st/) | 0.21 mi W | Electrical | Add 100amp drop for common meter | $2,500 | [E1880405](https://nearbypermits.com/boston/permit/E1880405/) |
| Aug 3, 2026 | [4 Cypress Rd](https://nearbypermits.com/boston/address/4-cypress-rd/) | 0.19 mi N | Alteration or repair | Weatherization, Insulation, Air Sealing | $22,120 | [SF1879942](https://nearbypermits.com/boston/permit/SF1879942/) |
| Jul 31, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Plumbing | demo med gas lines and make safe (oxygen, medical air, vacuum). It is understood that a plumbing permit is not required for any medical gas work but Boston Medical has asked us to file a permit | $5,000 | [PL1875947](https://nearbypermits.com/boston/permit/PL1875947/) |
| Jul 30, 2026 | [261-265 Washington St](https://nearbypermits.com/boston/address/261--265-washington-st/) | 0.21 mi S | Electrical | Wiring for the installation of (1) Heat pump | $1,500 | [E1878203](https://nearbypermits.com/boston/permit/E1878203/) |
| Jul 27, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Fire systems | Boston Medical Center- Brighton- EP-2 Lab- Remove Existing Ceiling Tiles, Turn Four (4) sprinkler heads upright for equipment installation, reinstall ceiling and turn sprinkler head down in original locations. No Added Sprinkler Coverage. All work in full compliance with MGL 780 CMR, 527 CMR | $1,200 | [SF1877164](https://nearbypermits.com/boston/permit/SF1877164/) |
| Jul 27, 2026 | [29 Bennett St](https://nearbypermits.com/boston/address/29-bennett-st/) | 0.21 mi W | Roofing | Strip and reroof (shingle roof) | $20,675 | [SF1875766](https://nearbypermits.com/boston/permit/SF1875766/) |
| Jul 22, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Alteration or repair | Boston Medical Center - Brighton-Emergency Equipment Replacement EP2 Lab - Replace ceiling,flooring, Swap out Equiptment and repair electrical. All work in full compliance with MGL 780 CMR, 527 CMR, 521 CMR | $90,400 | [SF1875627](https://nearbypermits.com/boston/permit/SF1875627/) |
| Jul 17, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Electrical | Replace EP lab equipment | $28,000 | [E1873523](https://nearbypermits.com/boston/permit/E1873523/) |
| Jul 13, 2026 | [329-343 Washington St](https://nearbypermits.com/boston/address/329--343-washington-st/) | 0.22 mi SW | Electrical | Cable TV / Phone / Data / Intercom / Power to Access Control | $68,000 | [ELV1863482](https://nearbypermits.com/boston/permit/ELV1863482/) |
| Jul 13, 2026 | [329-343 Washington St](https://nearbypermits.com/boston/address/329--343-washington-st/) | 0.22 mi SW | Fire systems | Install new addressable fire alarm system as part of renovation, including unit smoke detectors with sounder bases, notification appliances. | $110,000 | [EFA1864453](https://nearbypermits.com/boston/permit/EFA1864453/) |
| Jul 9, 2026 | [32-34 Etna St](https://nearbypermits.com/boston/address/32--34-etna-st/) | 0.24 mi NE | Alteration or repair | 2Nd floor windows remove and replace 9 windows, like for like, same size, no structural changes | $8,500 | [SF1867747](https://nearbypermits.com/boston/permit/SF1867747/) |
| Jun 24, 2026 | [329-343 Washington St](https://nearbypermits.com/boston/address/329--343-washington-st/) | 0.22 mi SW | Electrical | Renovation of common areas and (35) unit apartment building with (2) first level commercial spaces | $650,000 | [E1863471](https://nearbypermits.com/boston/permit/E1863471/) |
| Jun 24, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Electrical | Dunkin sales area full remodel | $15,000 | [E1860682](https://nearbypermits.com/boston/permit/E1860682/) |
| Jun 22, 2026 | [114 Leicester St](https://nearbypermits.com/boston/address/114-leicester-st/) | 0.19 mi NW | Plumbing | Gas pipe commercial kitchen and water heater | $30,000 | [G1862116](https://nearbypermits.com/boston/permit/G1862116/) |
| Jun 15, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Plumbing | Relocate hand sinks, rinse sinks, floor sinks, and grease trap | $5,000 | [PL1860197](https://nearbypermits.com/boston/permit/PL1860197/) |
| Jun 12, 2026 | [114 Leicester St](https://nearbypermits.com/boston/address/114-leicester-st/) | 0.19 mi NW | Fire systems | wiring low voltage fire alarm | $12,000 | [EFA1860958](https://nearbypermits.com/boston/permit/EFA1860958/) |
| Jun 10, 2026 | [329-343 Washington St](https://nearbypermits.com/boston/address/329--343-washington-st/) | 0.22 mi SW | Plumbing | Plumbing work for new & renovation work on 35 unit apartment building | $664,800 | [PL1859287](https://nearbypermits.com/boston/permit/PL1859287/) |
| Jun 9, 2026 | [345-359 Washington St](https://nearbypermits.com/boston/address/345--359-washington-st/) | 0.24 mi SW | Alteration or repair | Remove a partition wall and drop ceiling | $4,000 | [SF1859193](https://nearbypermits.com/boston/permit/SF1859193/) |
| Jun 4, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Fire systems | • replace the existing 3 hard wired smokes with new • install one new heat detector coming off of the nearest smoke hard wired zone | $14,887 | [EFA1857604](https://nearbypermits.com/boston/permit/EFA1857604/) |
| May 29, 2026 | [212-214 Market St](https://nearbypermits.com/boston/address/212--214-market-st/) | 0.23 mi N | Roofing | Remove and Replace EPDM, Parapet Cap, Install aluminum Drip Edge, Flash all Inside and Outside Corners, Install Tapered Insulation. We will need a lift for this project. | $18,341 | [SF1853686](https://nearbypermits.com/boston/permit/SF1853686/) |
| May 27, 2026 | [41-43 Arlington St](https://nearbypermits.com/boston/address/41--43-arlington-st/) | 0.19 mi W | Roofing | Remove and Replace Existing Asphalt Shingle Roof, Replace all Pipe Flashing, Install New Baffled Ridge Vent, Remove and Replace all Existing Vents, Re-Flash all Skylights, Remove and Re-Install Front Downspouts | $18,862 | [SF1853435](https://nearbypermits.com/boston/permit/SF1853435/) |
| May 26, 2026 | [34 Dustin St](https://nearbypermits.com/boston/address/34-dustin-st/) | 0.20 mi E | Plumbing | Reconnect gas to water heater in basement | $400 | [G1841940](https://nearbypermits.com/boston/permit/G1841940/) |
| May 22, 2026 | [4 Cypress Rd](https://nearbypermits.com/boston/address/4-cypress-rd/) | 0.19 mi N | Alteration or repair | Remove and replace 7 windows; like for like size; no structural changes | $24,877 | [SF1851941](https://nearbypermits.com/boston/permit/SF1851941/) |
| May 20, 2026 | [736 Cambridge St](https://nearbypermits.com/boston/address/736-cambridge-st/) | 0.19 mi SE | Electrical | Installation of 9 March Network Cameras | $10,000 | [ELV1851163](https://nearbypermits.com/boston/permit/ELV1851163/) |
| May 19, 2026 | [332 Washington St](https://nearbypermits.com/boston/address/332-washington-st/) | 0.24 mi SW | Plumbing | Install 2 half inch backflow preventers at 3 bay sink at basement area | $1,000 | [PL1851146](https://nearbypermits.com/boston/permit/PL1851146/) |
| May 15, 2026 | [114 Leicester St](https://nearbypermits.com/boston/address/114-leicester-st/) | 0.19 mi NW | Electrical | wiring low voltage fire alarm, camera data wiring | $80,000 | [E1850106](https://nearbypermits.com/boston/permit/E1850106/) |
| May 12, 2026 | [87 Murdock St](https://nearbypermits.com/boston/address/87-murdock-st/) | 0.19 mi E | Alteration or repair | Insulate walls with dense pack cellulose and basement rim joist with 2" ISO board. | $13,871 | [SF1847966](https://nearbypermits.com/boston/permit/SF1847966/) |
| May 4, 2026 | [34 Dustin St](https://nearbypermits.com/boston/address/34-dustin-st/) | 0.20 mi E | Plumbing | Replace water heater in the basement | $1,800 | [PL1841937](https://nearbypermits.com/boston/permit/PL1841937/) |

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-03 13:18 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/