# Building permits at 109 Walter St, Boston, MA

Two permits on record here. The newest, Aug 6: Insulate kneewall slope and gable end wall with fiberglass and 2": thermal barrier board insulate attic slope. Within a quarter mile, the city has issued 67 more permits (64 projects) since May 1.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Aug 6, 2026 | Alteration or repair | insulate kneewall slope and gable end wall with fiberglass and 2": thermal barrier board insulate attic slope with cellulose insulation install bath fan hose | $4,107 | [SF1880353](https://nearbypermits.com/boston/permit/SF1880353/) |
| Dec 16, 2016 | Alteration or repair | Gut rehab of existing bathroom, demo existing bathroom, frame, bring electrical and plumbing up to code, blueboard and plaster and finishes | $21,600 | [SF663035](https://nearbypermits.com/boston/permit/SF663035/) |

## Within ¼ mi since May 1, 2026

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

### Next door (under 250 ft), 8 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 8, 2026 | [99 Walter St](https://nearbypermits.com/boston/address/99-walter-st/) | 160 ft SW | Plumbing | Add half bath in garage, run new water and sewer to main house | $8,000 | [PL1908365](https://nearbypermits.com/boston/permit/PL1908365/) |
| Sep 14, 2026 | [99 Walter St](https://nearbypermits.com/boston/address/99-walter-st/) | 160 ft SW | Alteration or repair | Interior renovation of an existing one-family dwelling garage to change its use from a parking garage to an art studio, as shown on the plans. | $107,000 | [ALT1844025](https://nearbypermits.com/boston/permit/ALT1844025/) |
| Sep 4, 2026 | [125 Walter St](https://nearbypermits.com/boston/address/125-walter-st/) | 220 ft N | Demolition | replace decking and rails on front porch | $15,000 | [SF1897761](https://nearbypermits.com/boston/permit/SF1897761/) |
| Jul 2, 2026 | [51 Cotton St](https://nearbypermits.com/boston/address/51-cotton-st/) | 85 ft NE | Alteration or repair | Remove & replace 1 patio door; 1 entry door; like for like size; no structural changes | $15,096 | [SF1862509](https://nearbypermits.com/boston/permit/SF1862509/) |
| May 27, 2026 | [112 Walter St](https://nearbypermits.com/boston/address/112-walter-st/) | 160 ft NW | Alteration or repair | Air sealing, Insulation, Weatherization | $13,413 | [SF1849769](https://nearbypermits.com/boston/permit/SF1849769/) |
| May 22, 2026 | [104 Walter St](https://nearbypermits.com/boston/address/104-walter-st/) | 200 ft W | Solar | Installation of (12) 440w roof top solar modules and associated electrical work. | $25,329 | [SF1842764](https://nearbypermits.com/boston/permit/SF1842764/) |
| May 19, 2026 | [112 Walter St](https://nearbypermits.com/boston/address/112-walter-st/) | 160 ft NW | Mechanical (HVAC) | - Installation of 3.5 ton ductless heat pump system to serve the home | $31,913 | [SF1846309](https://nearbypermits.com/boston/permit/SF1846309/) |
| May 7, 2026 | [112 Walter St](https://nearbypermits.com/boston/address/112-walter-st/) | 160 ft NW | Electrical | - Service upgrade 100A to 200A - Wiring of 1 heat pump condenser - GFCI outlet | $6,950 | [E1846310](https://nearbypermits.com/boston/permit/E1846310/) |

### This block (250 to 1,000 ft), 38 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 8, 2026 | [104r-106r Walter St](https://nearbypermits.com/boston/address/104r--106r-walter-st/) | 270 ft W | Solar | Rough electrical wiring for contracted 'Enphase' solar system. (Final permits to be applied for at a later date) | $2,000 | [E1901583](https://nearbypermits.com/boston/permit/E1901583/) |
| Oct 5, 2026 | [182 Walter St](https://nearbypermits.com/boston/address/182-walter-st/) | 980 ft N | Electrical | New service for COB Street light control cabinet. | $15,000 | [E1906124](https://nearbypermits.com/boston/permit/E1906124/) |
| Oct 5, 2026 | [40 Arborough Rd](https://nearbypermits.com/boston/address/40-arborough-rd/) | 880 ft SE | Electrical | 200amp service upgrade 1 heat pump condenser | $5,000 | [E1905215](https://nearbypermits.com/boston/permit/E1905215/) |
| Sep 30, 2026 | [22-24 Arborough Rd](https://nearbypermits.com/boston/address/22--24-arborough-rd/) | 880 ft SE | Roofing | Replace the asphalt roof on home. | $19,500 | [SF1905779](https://nearbypermits.com/boston/permit/SF1905779/) |
| Sep 25, 2026 | [13 Ashfield St](https://nearbypermits.com/boston/address/13-ashfield-st/) | 580 ft S | Electrical | Replace blocks in meter for Eversource AMI project | $2,000 | [E1891404](https://nearbypermits.com/boston/permit/E1891404/) |
| Sep 18, 2026 | [11 Ardale St](https://nearbypermits.com/boston/address/11-ardale-st/) | 830 ft SW | Alteration or repair | Demolish existing deck. Dig 5 new 12" footings. Frame a new deck and stairs out of 2x8 pressure treated lumber. Install mahogany decking. Reuse handrails. | $34,250 | [SF1902420](https://nearbypermits.com/boston/permit/SF1902420/) |
| Sep 8, 2026 | [52 Walter St](https://nearbypermits.com/boston/address/52-walter-st/) | 820 ft SW | Alteration or repair | Remove Non-Structural wall, patch and paint to match. Flooring repairs where wall was located. | $4,200 | [SF1895302](https://nearbypermits.com/boston/permit/SF1895302/) |
| Sep 8, 2026 | [57 Walter St](https://nearbypermits.com/boston/address/57-walter-st/) | 730 ft SW | Alteration or repair | confirm occupancy of existing single family | Not listed | [ALT1880633](https://nearbypermits.com/boston/permit/ALT1880633/) |
| Sep 1, 2026 | [18 Basto Te](https://nearbypermits.com/boston/address/18-basto-te/) | 960 ft S | Alteration or repair | Insulation work as part of the MASS Save program. | $3,000 | [SF1895105](https://nearbypermits.com/boston/permit/SF1895105/) |
| Sep 1, 2026 | [178 Walter St](https://nearbypermits.com/boston/address/178-walter-st/) | 930 ft N | Roofing | Strip and re-roof | $8,750 | [SF1894127](https://nearbypermits.com/boston/permit/SF1894127/) |
| Sep 1, 2026 | [40 Arborough Rd](https://nearbypermits.com/boston/address/40-arborough-rd/) | 880 ft SE | Alteration or repair | Mass save insulation | $6,579 | [SF1889575](https://nearbypermits.com/boston/permit/SF1889575/) |
| Sep 1, 2026 | [32 Arborough Rd](https://nearbypermits.com/boston/address/32-arborough-rd/) | 870 ft SE | Alteration or repair | Demo decking and rotted framing, replace where needed. Possibly add new footing if not proper. Replace decking rails with cable rail Replace decking | $40,425 | [SF1885909](https://nearbypermits.com/boston/permit/SF1885909/) |
| Aug 27, 2026 | [15 Ashfield St](https://nearbypermits.com/boston/address/15-ashfield-st/) | 540 ft S | Electrical | Wire a new dormer | $9,500 | [E1895005](https://nearbypermits.com/boston/permit/E1895005/) |
| Aug 26, 2026 | [14 Symmes St](https://nearbypermits.com/boston/address/14-symmes-st/) | 860 ft S | Alteration or repair | Change of Occupancy from a single family with ADU to 2 family | $1,000 | [ALT1885542](https://nearbypermits.com/boston/permit/ALT1885542/) |
| Aug 25, 2026 | [57 Walter St](https://nearbypermits.com/boston/address/57-walter-st/) | 730 ft SW | Roofing | Pending;ALT1880633 Occupancy Committee.strip and install a new roof | $23,045 | [SF1879588](https://nearbypermits.com/boston/permit/SF1879588/) |
| Aug 10, 2026 | [49 Fairview St](https://nearbypermits.com/boston/address/49-fairview-st/) | 730 ft SE | Plumbing | gas stove on 3rd floor | $350 | [G1882971](https://nearbypermits.com/boston/permit/G1882971/) |
| Aug 9, 2026 | [12 Primrose St](https://nearbypermits.com/boston/address/12-primrose-st/) | 510 ft S | Electrical | Upgrade service to 200 Amps per unit | $7,500 | [E1882556](https://nearbypermits.com/boston/permit/E1882556/) |
| Aug 6, 2026 | [10 Symmes St](https://nearbypermits.com/boston/address/10-symmes-st/) | 890 ft S | Roofing | Remove existing cupola and replace roofing underneath. | $2,499 | [SF1880912](https://nearbypermits.com/boston/permit/SF1880912/) |
| Jul 28, 2026 | [52 Walter St](https://nearbypermits.com/boston/address/52-walter-st/) | 820 ft SW | Electrical | rewire 2nd floor bathroom- minor reno (new bath, new tile) wire new 1/2 bathroom on 2rd floor | $4,000 | [E1878807](https://nearbypermits.com/boston/permit/E1878807/) |
| Jul 23, 2026 | [52 Walter St](https://nearbypermits.com/boston/address/52-walter-st/) | 820 ft SW | Plumbing | Second floor a toilet and a lab third floor a tub, a sink.And a toilet | $9,000 | [PL1877420](https://nearbypermits.com/boston/permit/PL1877420/) |
| Jul 23, 2026 | [52 Walter St](https://nearbypermits.com/boston/address/52-walter-st/) | 820 ft SW | Plumbing | Installin one full bath in the basement with a shower and kitchen. Sake and a laundry room, awful, bad catch you. Sick, how long do you go on?Take a number oh | $9,000 | [PL1877373](https://nearbypermits.com/boston/permit/PL1877373/) |
| Jul 22, 2026 | [10 Ashfield St](https://nearbypermits.com/boston/address/10-ashfield-st/) | 700 ft S | Fence, wall or deck | Back Deck Renovation: remove railing, balusters, wood floor. Replace 4x4 poles that necessary.cover support system. Instal new AZEK floor, cover 4x4 posts. Install universal rail KIt | $23,000 | [SF1870584](https://nearbypermits.com/boston/permit/SF1870584/) |
| Jul 21, 2026 | [52 Walter St](https://nearbypermits.com/boston/address/52-walter-st/) | 820 ft SW | Alteration or repair | Half bath addition and Full bathroom remodel | $50,676 | [SF1875125](https://nearbypermits.com/boston/permit/SF1875125/) |
| Jul 21, 2026 | [16 Ashfield St](https://nearbypermits.com/boston/address/16-ashfield-st/) | 620 ft S | Alteration or repair | Weatherization, Insulation, Air Sealing | $7,100 | [SF1862724](https://nearbypermits.com/boston/permit/SF1862724/) |
| Jul 20, 2026 | [28 Primrose St](https://nearbypermits.com/boston/address/28-primrose-st/) | 320 ft S | Alteration or repair | Insulation work as part of the MASS Save program. We are only doing unit 2 | $6,000 | [SF1864438](https://nearbypermits.com/boston/permit/SF1864438/) |
| Jul 20, 2026 | [29 Conway St](https://nearbypermits.com/boston/address/29-conway-st/) | 990 ft S | Plumbing | Install 40 gal gas water heater in unit 2 | $500 | [PL1871323](https://nearbypermits.com/boston/permit/PL1871323/) |
| Jul 20, 2026 | [29 Conway St](https://nearbypermits.com/boston/address/29-conway-st/) | 990 ft S | Plumbing | Install 40 gal gas water heater in unit 2 | $500 | [G1871319](https://nearbypermits.com/boston/permit/G1871319/) |
| Jul 7, 2026 | [20 Cotton St](https://nearbypermits.com/boston/address/20-cotton-st/) | 380 ft SE | Addition | 342 Sf single story addition off the back of the existing home. New footings, framing, windows, doors, electrical & HVAC is proposed. As well as a partial renovation to the existing half bath to a full bath next to the addition. | $152,000 | [ALT1734282](https://nearbypermits.com/boston/permit/ALT1734282/) |
| Jun 23, 2026 | [15 Ashfield St](https://nearbypermits.com/boston/address/15-ashfield-st/) | 540 ft S | Alteration or repair | Confirm occupancy of single family &; Construct a shed style dormer with interior finishes.; | $229,438 | [ALT1832903](https://nearbypermits.com/boston/permit/ALT1832903/) |
| Jun 8, 2026 | [41 Fairview St](https://nearbypermits.com/boston/address/41-fairview-st/) | 730 ft SE | Solar | Remove pre-existent solar array for roof replacement. 20 panels total. Reinstall solar on roof. | $6,000 | [SF1856572](https://nearbypermits.com/boston/permit/SF1856572/) |
| Jun 8, 2026 | [41 Fairview St](https://nearbypermits.com/boston/address/41-fairview-st/) | 730 ft SE | Solar | Remove pre-existent solar array for roof replacement. 20 panels total. Reinstall solar on roof. | $6,000 | [E1856576](https://nearbypermits.com/boston/permit/E1856576/) |
| Jun 8, 2026 | [41 Fairview St](https://nearbypermits.com/boston/address/41-fairview-st/) | 730 ft SE | Roofing | Asphalt shingles replacement on the entire house. | $25,199 | [SF1850286](https://nearbypermits.com/boston/permit/SF1850286/) |
| May 29, 2026 | [21 Mendum St](https://nearbypermits.com/boston/address/21-mendum-st/) | 460 ft E | Alteration or repair | Per Pat Curran's instructions, this is a permit to replace existing siding with Hardie plank, install new window trim, corner boards and water table and paint the house. | $91,207 | [SF1850763](https://nearbypermits.com/boston/permit/SF1850763/) |
| May 27, 2026 | [34 Mendum St](https://nearbypermits.com/boston/address/34-mendum-st/) | 270 ft E | Alteration or repair | Remove and replace 1 window; like for like size; no structural changes | $8,309 | [SF1847234](https://nearbypermits.com/boston/permit/SF1847234/) |
| May 19, 2026 | [32-34 Fairview St](https://nearbypermits.com/boston/address/32--34-fairview-st/) | 680 ft S | Alteration or repair | Bathroom Renovation: No change to plumbing location, and no removal or relocation of walls. Removing horsehair wall covering and replacing it with sheetrock. Replacing tub, tub surround, showerhead, exhaust fan, vanity, and toilet with new fixtures. Adding a heated tiled floor. | $20,000 | [SF1842620](https://nearbypermits.com/boston/permit/SF1842620/) |
| May 14, 2026 | [37 Eldon St](https://nearbypermits.com/boston/address/37-eldon-st/) | 990 ft NW | Solar | Installation of roof mounted photovoltaic solar systems, 10.66 KW 26 panels with installation of 1 franklin battery installed on exterior of home | $76,800 | [E1848361](https://nearbypermits.com/boston/permit/E1848361/) |
| May 13, 2026 | [26 Fairview St](https://nearbypermits.com/boston/address/26-fairview-st/) | 780 ft S | Roofing | Remove existing asphalt shingles and install new asphalt shingles, underlayment, flashing, and proper ventilation. Owens Corning | $18,775 | [SF1843645](https://nearbypermits.com/boston/permit/SF1843645/) |
| May 11, 2026 | [32-34 Fairview St](https://nearbypermits.com/boston/address/32--34-fairview-st/) | 680 ft S | Plumbing | Replace toilet, bathtub, and sink on 2nd floor | $4,500 | [PL1847406](https://nearbypermits.com/boston/permit/PL1847406/) |

### Farther (1,000 ft to ¼ mi), 21 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 3, 2026 | [83 Selwyn St](https://nearbypermits.com/boston/address/83-selwyn-st/) | 0.23 mi W | Roofing | Furnish and install a new asphalt shingle and EPDM (rubber) roofing system on home. | $14,713 | [SF1885702](https://nearbypermits.com/boston/permit/SF1885702/) |
| Sep 1, 2026 | [22 Conway St](https://nearbypermits.com/boston/address/22-conway-st/) | 0.20 mi S | Alteration or repair | insulating the kneewall slope with 2" rigid board also insulating the kneewall floor with 12" of cellulose and air sealing | $957 | [SF1889613](https://nearbypermits.com/boston/permit/SF1889613/) |
| Aug 31, 2026 | [87 Selwyn St](https://nearbypermits.com/boston/address/87-selwyn-st/) | 0.24 mi W | Roofing | Strip and re roof house to code. 2 sq EPDM rubber, 17 squares shingle Fox Hollow Gray, 57 sheets wood decking (OSB). 6 ft Ice and water, GAF synthetic underlayment, new pipe flashings, Ice and water around all flashings, 6 nails per shingle, GAF hip and ridge cap. Insulation for rubber section | $26,679 | [SF1895400](https://nearbypermits.com/boston/permit/SF1895400/) |
| Aug 27, 2026 | [855 South St](https://nearbypermits.com/boston/address/855-south-st/) | 0.23 mi SW | Electrical | Replace meter sockets for apartments 1 and 2, install AMI meters for Eversource AMI project | $4,000 | [E1894673](https://nearbypermits.com/boston/permit/E1894673/) |
| Aug 27, 2026 | [22 Conway St](https://nearbypermits.com/boston/address/22-conway-st/) | 0.20 mi S | Solar | Installation of (12) roof mounted solar panels and microinverters with 5.280 kWDC rated output. No ESS. | $11,000 | [ALT1883203](https://nearbypermits.com/boston/permit/ALT1883203/) |
| Aug 6, 2026 | [22 Conway St](https://nearbypermits.com/boston/address/22-conway-st/) | 0.20 mi S | Solar | Installation of (12) roof mounted solar panels and microinverters with 5.280 kWDC rated output. No ESS. | $7,000 | [E1883207](https://nearbypermits.com/boston/permit/E1883207/) |
| Jul 30, 2026 | [7 Basto Te](https://nearbypermits.com/boston/address/7-basto-te/) | 0.21 mi S | Fire systems | Furnish and install 120 volt smokes with lithium battery backup -(4) smoke carbons one on each level -(4) smokes in each bedroom | $1,000 | [EFA1879038](https://nearbypermits.com/boston/permit/EFA1879038/) |
| Jul 23, 2026 | [7 Basto Te](https://nearbypermits.com/boston/address/7-basto-te/) | 0.21 mi S | Electrical | Whole-home rewire including new circuits for laundry, full kitchen power and lighting, pantry, bath, living/dining, hall, porch, bedrooms, attic, exterior GFCIs, smoke system, doorbell, 200A service upgrade, HVAC circuit, and added lighting/outlets. | $35,000 | [E1875971](https://nearbypermits.com/boston/permit/E1875971/) |
| Jul 20, 2026 | [7 Basto Te](https://nearbypermits.com/boston/address/7-basto-te/) | 0.21 mi S | Plumbing | Renovation of Plumbing Fixtures | $7,000 | [PL1872596](https://nearbypermits.com/boston/permit/PL1872596/) |
| Jul 20, 2026 | [7 Basto Te](https://nearbypermits.com/boston/address/7-basto-te/) | 0.21 mi S | Plumbing | Renovation of Gas Fixtures | $3,000 | [G1872600](https://nearbypermits.com/boston/permit/G1872600/) |
| Jul 17, 2026 | [863 South St](https://nearbypermits.com/boston/address/863-south-st/) | 0.24 mi SW | Electrical | Kitchen reno | $3,500 | [E1872891](https://nearbypermits.com/boston/permit/E1872891/) |
| Jul 15, 2026 | [863 South St](https://nearbypermits.com/boston/address/863-south-st/) | 0.24 mi SW | Plumbing | kitchen remodel with laundry | $4,650 | [PL1872954](https://nearbypermits.com/boston/permit/PL1872954/) |
| Jul 14, 2026 | [7 Basto Te](https://nearbypermits.com/boston/address/7-basto-te/) | 0.21 mi S | Alteration or repair | Interior renovations all new plumbing, electrical, hvac, insulation, board and plaster, tile work and carpentry. We will finish the kitchen and 1 full and 1/2 bath. We will have all new work done to code or exceeding. We will remove the debris via dumpster in the homes driveway. | $148,050 | [SF1861606](https://nearbypermits.com/boston/permit/SF1861606/) |
| Jun 26, 2026 | [831 South St](https://nearbypermits.com/boston/address/831-south-st/) | 0.23 mi S | Roofing | Replace the asphalt roof on home. | $16,800 | [SF1858926](https://nearbypermits.com/boston/permit/SF1858926/) |
| Jun 26, 2026 | [28 Sheffield Rd](https://nearbypermits.com/boston/address/28-sheffield-rd/) | 0.23 mi SW | Plumbing | replacement of fixtures only. toilet, sink and bathtub | $2,500 | [PL1865291](https://nearbypermits.com/boston/permit/PL1865291/) |
| Jun 26, 2026 | [28 Sheffield Rd](https://nearbypermits.com/boston/address/28-sheffield-rd/) | 0.23 mi SW | Electrical | Installing old work box and light fixture over 1st floor bathroom medicine cabinet and installing junction box and receptacle in second floor kitchen | $500 | [E1865436](https://nearbypermits.com/boston/permit/E1865436/) |
| Jun 25, 2026 | [28 Sheffield Rd](https://nearbypermits.com/boston/address/28-sheffield-rd/) | 0.23 mi SW | Alteration or repair | Water leak in unit requiring drywall install, vanity install, touchups. No structural and very minimal MEP work. | $9,900 | [SF1862411](https://nearbypermits.com/boston/permit/SF1862411/) |
| Jun 25, 2026 | [863 South St](https://nearbypermits.com/boston/address/863-south-st/) | 0.24 mi SW | Alteration or repair | Kitchen Remodel: to include demo, rough carpentry, wiring, plasteirng, plumbing, finish carpentry, LVP Flooring, tile backsplash new cabinets and countertop | $75,716 | [SF1859677](https://nearbypermits.com/boston/permit/SF1859677/) |
| Jun 11, 2026 | [7 Basto Te](https://nearbypermits.com/boston/address/7-basto-te/) | 0.21 mi S | Alteration or repair | Exterior renovations including new roofing, siding, windows, trim work and decking. All new exterior work will be new pvc trim, Hardie board siding, new vinyl windows, composite decking and railings and asphalt shingles. We will remove all construction debris with a dumpster in the homes driveway. | $92,680 | [SF1857124](https://nearbypermits.com/boston/permit/SF1857124/) |
| Jun 8, 2026 | [11 Basto Te](https://nearbypermits.com/boston/address/11-basto-te/) | 0.21 mi S | Alteration or repair | Front porch renovation, install new floor, new door, new porch ceiling, remove old rubber roof, install new rubber roof, painting inside and outside. | $22,500 | [SF1858523](https://nearbypermits.com/boston/permit/SF1858523/) |
| Jun 4, 2026 | [65 Selwyn St](https://nearbypermits.com/boston/address/65-selwyn-st/) | 0.20 mi W | Alteration or repair | replacement of existing fire escape stairs and rebuild in same foot print as originals | $49,920 | [SF1847213](https://nearbypermits.com/boston/permit/SF1847213/) |

## Zoning requests nearby

There are no zoning requests on file within ¼ mi. Boston's feed was last read Oct 13.

## More on this street

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

- [107 Walter St](https://nearbypermits.com/boston/address/107-walter-st/): newest permit Oct 15, 2024
- [112 Walter St](https://nearbypermits.com/boston/address/112-walter-st/): newest permit May 27, 2026
- [104 Walter St](https://nearbypermits.com/boston/address/104-walter-st/): newest permit May 22, 2026
- [117 Walter St](https://nearbypermits.com/boston/address/117-walter-st/): newest permit Oct 8, 2025
- [99 Walter St](https://nearbypermits.com/boston/address/99-walter-st/): newest permit Oct 8, 2026
- [125 Walter St](https://nearbypermits.com/boston/address/125-walter-st/): newest permit Sep 4, 2026
- [90-92 Walter St](https://nearbypermits.com/boston/address/90--92-walter-st/): newest permit May 29, 2025
- [84 Walter St](https://nearbypermits.com/boston/address/84-walter-st/): newest permit Dec 23, 2024
- [138 Walter St](https://nearbypermits.com/boston/address/138-walter-st/): newest permit Jan 20, 2026
- [156 Walter St](https://nearbypermits.com/boston/address/156-walter-st/): newest permit Jan 6, 2025

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-14 00:27 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 13, 21:17 UTC.

Map, both permits at this address and 67 nearby: https://nearbypermits.com/boston/address/109-walter-st/