# Building permits at 18 Olmstead St, Boston, MA

The biggest project within a quarter mile since May 1: a $102M new building at 450 Walnut Av, permitted Jul 24.

Three permits on record here. The newest, Dec 16, 2025: Front deck repair / rotted wood replacement. Within a quarter mile, the city has issued 68 more permits (67 projects) since May 1. Three are new buildings, the nearest 800 ft away.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Dec 16, 2025 | Fence, wall or deck | Front deck repair / rotted wood replacement | $6,900 | [SF1805249](https://nearbypermits.com/boston/permit/SF1805249/) |
| Nov 25, 2025 | Alteration or repair | Replace rotted wood on existing exterior deck. No structural changes, no footprint alteration. Repair limited to decking boards and railings to restore safety and maintain existing design. | $4,900 | [SF1794252](https://nearbypermits.com/boston/permit/SF1794252/) |
| Sep 16, 2025 | Plumbing | 20 Olmstead Basement: toilet, lav, shower, laundry | $6,500 | [PL1766102](https://nearbypermits.com/boston/permit/PL1766102/) |

## Within ¼ mi since May 1, 2026

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

### Next door (under 250 ft), 3 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 10, 2026 | [73 Montebello Rd](https://nearbypermits.com/boston/address/73-montebello-rd/) | 130 ft NE | Alteration or repair | Weatherization work through the mass save program. | $6,224 | [SF1900107](https://nearbypermits.com/boston/permit/SF1900107/) |
| May 15, 2026 | [61 Montebello Rd](https://nearbypermits.com/boston/address/61-montebello-rd/) | 150 ft N | Fire systems | Install a new UL Central Station fire alarm system | $8,000 | [EFA1849993](https://nearbypermits.com/boston/permit/EFA1849993/) |
| May 7, 2026 | [61 Montebello Rd](https://nearbypermits.com/boston/address/61-montebello-rd/) | 150 ft N | Plumbing | Rough and finish Plumbing for new multi family building | $100,000 | [PL1846335](https://nearbypermits.com/boston/permit/PL1846335/) |

### This block (250 to 1,000 ft), 46 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 29, 2026 | [3235 Washington St](https://nearbypermits.com/boston/address/3235-washington-st/) | 530 ft W | Plumbing | gas pressure test | $3,000 | [G1904538](https://nearbypermits.com/boston/permit/G1904538/) |
| Sep 26, 2026 | [13 Marmion St](https://nearbypermits.com/boston/address/13-marmion-st/) | 800 ft W | Addition | 2-story rear addition and new attic dormer plus partial interior renovation. Confirm existing 1 family dwelling.Contact; Peter Sagalis (contractor). | $254,483 | [ALT1686444](https://nearbypermits.com/boston/permit/ALT1686444/) |
| Sep 24, 2026 | [493 Walnut Av](https://nearbypermits.com/boston/address/493-walnut-av/) | 750 ft SE | Electrical | remove meter socket and exterior fixtures for siding | $1,000 | [E1902933](https://nearbypermits.com/boston/permit/E1902933/) |
| Sep 21, 2026 | [24 Granada Pk](https://nearbypermits.com/boston/address/24-granada-pk/) | 690 ft NE | Electrical | Replace existing bath fan with new | $1,250 | [ELV1902431](https://nearbypermits.com/boston/permit/ELV1902431/) |
| Sep 15, 2026 | [27 Iffley Rd](https://nearbypermits.com/boston/address/27-iffley-rd/) | 350 ft NE | Electrical | Rewiring of 3 apartment and service upgrade | $40,000 | [E1901203](https://nearbypermits.com/boston/permit/E1901203/) |
| Sep 11, 2026 | [45 Haverford St](https://nearbypermits.com/boston/address/45-haverford-st/) | 690 ft NW | Plumbing | replacement of a dryer | $200 | [G1899359](https://nearbypermits.com/boston/permit/G1899359/) |
| Sep 6, 2026 | [75 Forest Hills St](https://nearbypermits.com/boston/address/75-forest-hills-st/) | 850 ft SW | Electrical | Upgrade the service for 100amps to 200amps and add public meter | $5,000 | [E1897183](https://nearbypermits.com/boston/permit/E1897183/) |
| Sep 3, 2026 | [219 Boylston St](https://nearbypermits.com/boston/address/219-boylston-st/) | 760 ft N | Alteration or repair | Construct an addition consisting of a new penthouse to provide enclosed interior access from the existing 3rd-floor unit to the roof garage. Confirm the existing occupancy as a 3-family dwelling. | $50,996 | [ALT1802955](https://nearbypermits.com/boston/permit/ALT1802955/) |
| Aug 31, 2026 | [16 Chilcott Pl](https://nearbypermits.com/boston/address/16-chilcott-pl/) | 760 ft N | Electrical | Remodeling in the Kitchen and two bedrooms and ADU new construction in the Living, Dining, Bathroom and Laundry Room and Deck and Install a New MINI SPLIT | $9,200 | [E1895521](https://nearbypermits.com/boston/permit/E1895521/) |
| Aug 29, 2026 | [5-7 Ackley Pl](https://nearbypermits.com/boston/address/5--7-ackley-pl/) | 800 ft W | Electrical | temp service | $2,000 | [ETS1894784](https://nearbypermits.com/boston/permit/ETS1894784/) |
| Aug 27, 2026 | [16 Chilcott Pl](https://nearbypermits.com/boston/address/16-chilcott-pl/) | 760 ft N | Plumbing | kit bath | $6,000 | [PL1895060](https://nearbypermits.com/boston/permit/PL1895060/) |
| Aug 24, 2026 | [493 Walnut Av](https://nearbypermits.com/boston/address/493-walnut-av/) | 750 ft SE | Alteration or repair | Install New Siding and 3 New Windows (Removal and Disposal of Existing Siding by Others) | $115,000 | [SF1886345](https://nearbypermits.com/boston/permit/SF1886345/) |
| Aug 13, 2026 | [47 Haverford St](https://nearbypermits.com/boston/address/47-haverford-st/) | 700 ft NW | Roofing | Replace existing rubber roof | $18,500 | [SF1875925](https://nearbypermits.com/boston/permit/SF1875925/) |
| Aug 12, 2026 | [69 Robeson St](https://nearbypermits.com/boston/address/69-robeson-st/) | 850 ft SE | Roofing | Remove existing asphalt shingles. Install 6 feet ice and water protection. Cover the remaining roof with underlayment. Install lifetime asphalt shingles to entire roof including drip edge. Dispose of materials waste. | $40,000 | [SF1881995](https://nearbypermits.com/boston/permit/SF1881995/) |
| Aug 12, 2026 | [69 Robeson St](https://nearbypermits.com/boston/address/69-robeson-st/) | 850 ft SE | Alteration or repair | Infill the upper-level floor interior to accomadate room with a bathroom for the office. see estaimte for detai1 Office has been approved by BOA 1/20/1998 no other office has been approved Ward Inspector is to verify in the field | $134,647 | [ALT1813265](https://nearbypermits.com/boston/permit/ALT1813265/) |
| Jul 27, 2026 | [27 Chilcott Pl](https://nearbypermits.com/boston/address/27-chilcott-pl/) | 620 ft NE | Alteration or repair | Installation and wiring of new ducted system consisting of one condenser and one air handler | $18,823 | [SF1874218](https://nearbypermits.com/boston/permit/SF1874218/) |
| Jul 24, 2026 | [450 Walnut Av](https://nearbypermits.com/boston/address/450-walnut-av/) | 940 ft E | New building | Erect White Stadium WEST Grandstand. Excavation and installation of concrete foundations on separate permit.[ePlans] | $101,897,138 | [ERT1691970](https://nearbypermits.com/boston/permit/ERT1691970/) |
| Jul 23, 2026 | [48 Peter Parley Rd](https://nearbypermits.com/boston/address/48-peter-parley-rd/) | 350 ft SE | Alteration or repair | Selective interior demolition of the third floor of an existing single-family residence, including protection of adjacent areas, removal of drywall and finishes, debris disposal, and final cleanup. No structural modifications are included | $11,500 | [SF1872033](https://nearbypermits.com/boston/permit/SF1872033/) |
| Jul 22, 2026 | [5-7 Ackley Pl](https://nearbypermits.com/boston/address/5--7-ackley-pl/) | 800 ft W | New building | To erect a new three-story residential building with two units and two exterior parking spaces; see companion case 9-11 Ackley Pl ERT application (two buildings on one lot with a total of four units and four parking spaces); a prior iteration of this project was previously reviewed by James Kennedy* | $496,180 | [ERT1672941](https://nearbypermits.com/boston/permit/ERT1672941/) |
| Jul 22, 2026 | [27 Chilcott Pl](https://nearbypermits.com/boston/address/27-chilcott-pl/) | 620 ft NE | Electrical | Installation and wiring of new ducted system consisting of one condenser and one air handler | $6,274 | [E1875220](https://nearbypermits.com/boston/permit/E1875220/) |
| Jul 22, 2026 | [90 Forest Hills St](https://nearbypermits.com/boston/address/90-forest-hills-st/) | 970 ft SW | Electrical | In Unit 3 Install (2) 120v 20a a/c receptacles on the third floor (middle bedroom and back bedroom) | $2,300 | [E1874097](https://nearbypermits.com/boston/permit/E1874097/) |
| Jun 30, 2026 | [9-11 Ackley Pl](https://nearbypermits.com/boston/address/9--11-ackley-pl/) | 830 ft W | New building | To erect a new three-story residential building with two units and two exterior parking spaces; see companion case 5-7 Ackley Pl ERT1672941 (two buildings on one lot with a total of four units and four parking spaces); a prior iteration of this project was previously reviewed by James Kennedy*Filing | $496,185 | [ERT1672942](https://nearbypermits.com/boston/permit/ERT1672942/) |
| Jun 30, 2026 | [9 Haverford St](https://nearbypermits.com/boston/address/9-haverford-st/) | 620 ft W | Electrical | Bathroom remodel | $1,200 | [E1864249](https://nearbypermits.com/boston/permit/E1864249/) |
| Jun 26, 2026 | [450 Walnut Av](https://nearbypermits.com/boston/address/450-walnut-av/) | 940 ft E | Electrical | Furnish & install the infrastructure and equipment associated with the Security system on the East side of White Stadium and the Event Level Zone F on the West side of White Stadium | $170,000 | [ELV1863911](https://nearbypermits.com/boston/permit/ELV1863911/) |
| Jun 26, 2026 | [450 Walnut Av](https://nearbypermits.com/boston/address/450-walnut-av/) | 940 ft E | Fire systems | New Fire Alarm System installed in East side of White Stadium and Event Level Zone F on West side of stadium | $388,045 | [EFA1863536](https://nearbypermits.com/boston/permit/EFA1863536/) |
| Jun 25, 2026 | [9 Haverford St](https://nearbypermits.com/boston/address/9-haverford-st/) | 620 ft W | Plumbing | 2 bathroom renovations | $13,500 | [PL1863781](https://nearbypermits.com/boston/permit/PL1863781/) |
| Jun 25, 2026 | [3141 Washington St](https://nearbypermits.com/boston/address/3141-washington-st/) | 960 ft N | Alteration or repair | Remove proviso order *Granted to this Petitioner Only*, increase occupancy;from 19 to 49 occupants. (2 TV's and 4 ceiling speakers). Work being done on;SF1684254 | Not listed | [ALT1685594](https://nearbypermits.com/boston/permit/ALT1685594/) |
| Jun 18, 2026 | [59 Forest Hills St](https://nearbypermits.com/boston/address/59-forest-hills-st/) | 710 ft SW | Plumbing | -Disconnect and remove 3rd floor water heater. -install new hot water line to connect 3rd floor to water heater in basement -Reroute stack vent over a couple feet from floor of 3rd floor up through roof. | $1,900 | [PL1861504](https://nearbypermits.com/boston/permit/PL1861504/) |
| Jun 18, 2026 | [59 Forest Hills St](https://nearbypermits.com/boston/address/59-forest-hills-st/) | 710 ft SW | Plumbing | disconnect and cap gas line to old 3rd floor furnace and water heater | $250 | [G1861512](https://nearbypermits.com/boston/permit/G1861512/) |
| Jun 17, 2026 | [450 Walnut Av](https://nearbypermits.com/boston/address/450-walnut-av/) | 940 ft E | Electrical | Furnish&install the temporary electrical work associated with the construction of the White Stadium project. Temporary service completed by others. LAI to connect to existing service equipment for temporary power within the new building footprint. Installation will include UG and overhead conductors | Not listed | [E1826002](https://nearbypermits.com/boston/permit/E1826002/) |
| Jun 17, 2026 | [15 Erie Pl](https://nearbypermits.com/boston/address/15-erie-pl/) | 850 ft N | Alteration or repair | Installation of 12x20 gazebo in backyard. | $1,200 | [ALT1860829](https://nearbypermits.com/boston/permit/ALT1860829/) |
| Jun 16, 2026 | [45 Forest Hills St](https://nearbypermits.com/boston/address/45-forest-hills-st/) | 580 ft SW | Roofing | Strip and re-roof including skylight replacement | $59,975 | [SF1860139](https://nearbypermits.com/boston/permit/SF1860139/) |
| Jun 16, 2026 | [34 Egleston St](https://nearbypermits.com/boston/address/34-egleston-st/) | 910 ft N | Alteration or repair | Install garage door | $16,250 | [SF1858356](https://nearbypermits.com/boston/permit/SF1858356/) |
| Jun 15, 2026 | [450 Walnut Av](https://nearbypermits.com/boston/address/450-walnut-av/) | 940 ft E | Electrical | White Stadium - West Renovation - PERMIT FEE WAIVED same as East Renovation. Letter is attached MISC Low Voltage HVAC Control Wiring AM 263970 | $637,745 | [ELV1860279](https://nearbypermits.com/boston/permit/ELV1860279/) |
| Jun 11, 2026 | [10 Marmion St](https://nearbypermits.com/boston/address/10-marmion-st/) | 900 ft W | Electrical | Service upgrade from 100a to 200a + full house re-wire | $25,000 | [E1860059](https://nearbypermits.com/boston/permit/E1860059/) |
| Jun 5, 2026 | [9 Haverford St](https://nearbypermits.com/boston/address/9-haverford-st/) | 620 ft W | Alteration or repair | Bathroom Remodel - No structual to include rough crpentry, plumbing,electrical, plasteirng, carpentry, tiling, custom glass shower door | $68,789 | [SF1855752](https://nearbypermits.com/boston/permit/SF1855752/) |
| Jun 4, 2026 | [24 Granada Pk](https://nearbypermits.com/boston/address/24-granada-pk/) | 690 ft NE | Electrical | heat pump wiring | $600 | [E1857311](https://nearbypermits.com/boston/permit/E1857311/) |
| Jun 2, 2026 | [46 Forest Hills St](https://nearbypermits.com/boston/address/46-forest-hills-st/) | 540 ft SW | Electrical | Low voltage alarm install | $1,200 | [ELV1856607](https://nearbypermits.com/boston/permit/ELV1856607/) |
| Jun 2, 2026 | [3293-3297 Washington St](https://nearbypermits.com/boston/address/3293--3297-washington-st/) | 890 ft W | Electrical | 3297 Washington St. - Brookside Community Health Center - RTU replacement new fused disconnects mounted to unit, disconnect existing units, extend existing feeders, reconnect control wiring at new units. Mtec118x | $9,845 | [E1856068](https://nearbypermits.com/boston/permit/E1856068/) |
| Jun 1, 2026 | [3293-3297 Washington St](https://nearbypermits.com/boston/address/3293--3297-washington-st/) | 890 ft W | Plumbing | Replace Water Service Piping, backflow & Flange Ball Valve | $3,000 | [PL1855767](https://nearbypermits.com/boston/permit/PL1855767/) |
| Jun 1, 2026 | [450 Walnut Av](https://nearbypermits.com/boston/address/450-walnut-av/) | 940 ft E | Electrical | White Stadium - East Renovation at 450E Walnut Avenue Boston location. Misc low voltage HVAC control wiring - permit fee waived see attacment # 5- am 264066 | $623,370 | [ELV1849797](https://nearbypermits.com/boston/permit/ELV1849797/) |
| Jun 1, 2026 | [59 Forest Hills St](https://nearbypermits.com/boston/address/59-forest-hills-st/) | 710 ft SW | Electrical | - relocate ev charger - exterior work, adding lighting and outlets on deck - interior work, adding lights to existing wiring in living room, laundry room, hallway | $5,000 | [E1852054](https://nearbypermits.com/boston/permit/E1852054/) |
| May 28, 2026 | [24 Forest Hills St](https://nearbypermits.com/boston/address/24-forest-hills-st/) | 260 ft W | Plumbing | Install new vanity toilet shower pan and valve | $3,000 | [PL1855281](https://nearbypermits.com/boston/permit/PL1855281/) |
| May 28, 2026 | [9-11 Ackley Pl](https://nearbypermits.com/boston/address/9--11-ackley-pl/) | 830 ft W | Alteration or repair | *At risk permit Foundation only;*J.K. Application re-assigned to FD by M.O. on 5.26.26 | $496,185 | [FND1835653](https://nearbypermits.com/boston/permit/FND1835653/) |
| May 6, 2026 | [26 Sigourney St](https://nearbypermits.com/boston/address/26-sigourney-st/) | 870 ft S | Alteration or repair | Remove and replace 3 windows; like for like size; no structural changes | $14,516 | [SF1844690](https://nearbypermits.com/boston/permit/SF1844690/) |
| May 5, 2026 | [16 Chilcott Pl](https://nearbypermits.com/boston/address/16-chilcott-pl/) | 760 ft N | Alteration or repair | Adding 20' X 22' 5" 3rd floor addition with new full bath new hvac, plumbing, and electrical New cedar shingle siding to match existing PDM rubber roof membrane over addition and dormer -N/R of Occupancy, Confirm Occupancy of 3 Family; | $176,500 | [ALT1741248](https://nearbypermits.com/boston/permit/ALT1741248/) |

### Farther (1,000 ft to ¼ mi), 19 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 22, 2026 | [1 Pierpont Rd](https://nearbypermits.com/boston/address/1-pierpont-rd/) | 0.22 mi E | Electrical | grounding of (1) 25KW generator to power audio gear set up 10/1st - franklin park overlook ruins | $1,000 | [ETS1902784](https://nearbypermits.com/boston/permit/ETS1902784/) |
| Sep 14, 2026 | [21 Brookside Av](https://nearbypermits.com/boston/address/21-brookside-av/) | 0.22 mi NW | Electrical | Installation for outdoor sauna | $4,000 | [E1900789](https://nearbypermits.com/boston/permit/E1900789/) |
| Aug 24, 2026 | [4 Glade Av](https://nearbypermits.com/boston/address/4-glade-av/) | 0.24 mi S | Alteration or repair | Removing and raplacing 8 windows | $8,425 | [SF1887929](https://nearbypermits.com/boston/permit/SF1887929/) |
| Aug 13, 2026 | [62-76 Cornwall St](https://nearbypermits.com/boston/address/62--76-cornwall-st/) | 0.24 mi W | Plumbing | replace existing tub shower valve and drain with new shower valve and drain | $1,895 | [PL1887014](https://nearbypermits.com/boston/permit/PL1887014/) |
| Jul 22, 2026 | [10 Dalrymple St](https://nearbypermits.com/boston/address/10-dalrymple-st/) | 0.23 mi N | Solar | Rooftop solar 25 panels 10.25 kwdc 15kw energy storage system to be installed on exterior wall no structural | $21,390 | [SF1870051](https://nearbypermits.com/boston/permit/SF1870051/) |
| Jul 20, 2026 | [10 Brookside Av](https://nearbypermits.com/boston/address/10-brookside-av/) | 0.21 mi NW | Plumbing | Replace heating boiler | $5,000 | [G1873021](https://nearbypermits.com/boston/permit/G1873021/) |
| Jul 16, 2026 | [10 Brookside Av](https://nearbypermits.com/boston/address/10-brookside-av/) | 0.21 mi NW | Plumbing | replace heating boiler | $5,000 | [PL1873023](https://nearbypermits.com/boston/permit/PL1873023/) |
| Jul 16, 2026 | [3345 Washington St](https://nearbypermits.com/boston/address/3345-washington-st/) | 0.24 mi SW | Plumbing | replace 4 roof drains for the boston police | $4,000 | [PL1872793](https://nearbypermits.com/boston/permit/PL1872793/) |
| Jul 8, 2026 | [10 Dalrymple St](https://nearbypermits.com/boston/address/10-dalrymple-st/) | 0.23 mi N | Electrical | Rooftop solar 25 panels 10.25 kwdc 15kw energy storage system to be installed on exterior wall | $71,610 | [E1870054](https://nearbypermits.com/boston/permit/E1870054/) |
| Jun 25, 2026 | [8 Glenside Av](https://nearbypermits.com/boston/address/8-glenside-av/) | 0.24 mi S | Plumbing | 2nd Floor: 1 Gas Stove, 1 Gas Dryer, 1 Naviem Combo Gas, 1 Gas Fireplace | $3,600 | [G1864113](https://nearbypermits.com/boston/permit/G1864113/) |
| Jun 18, 2026 | [1 Pierpont Rd](https://nearbypermits.com/boston/address/1-pierpont-rd/) | 0.22 mi E | Electrical | Generator for use with an entertainment setup. The event is taking place on Saturday, June 19, 2026 between 10:00 am - 8:00 pm at Franklin Park Playstead at Pierpont Road. | $965 | [ETS1862591](https://nearbypermits.com/boston/permit/ETS1862591/) |
| Jun 8, 2026 | [16 Merriam St](https://nearbypermits.com/boston/address/16-merriam-st/) | 0.24 mi NW | Other | Installing a temporary weighted frame tent without walls for a FIFA watch party. Installing 06/11/26 and removing 06/15/26. Alcohol is being served. Barricade plan included on the ISD stamped engineer plans. | $6,500 | [SF1858810](https://nearbypermits.com/boston/permit/SF1858810/) |
| Jun 6, 2026 | [419 Walnut Av](https://nearbypermits.com/boston/address/419-walnut-av/) | 0.24 mi NE | Plumbing | Replacing gas dryers in common area laundry room. | $270 | [G1856687](https://nearbypermits.com/boston/permit/G1856687/) |
| Jun 1, 2026 | [14 Greenley Pl](https://nearbypermits.com/boston/address/14-greenley-pl/) | 0.24 mi W | Electrical | Connections for air source heat pump heating system in unit 3 only - (1) condenser and (1) air handler in the attic. | $10,000 | [E1855127](https://nearbypermits.com/boston/permit/E1855127/) |
| Jun 1, 2026 | [83 Glen Rd](https://nearbypermits.com/boston/address/83-glen-rd/) | 0.23 mi S | Electrical | Direct wiring to replacement HVAC system | $1,500 | [E1851591](https://nearbypermits.com/boston/permit/E1851591/) |
| May 13, 2026 | [53 Glen Rd](https://nearbypermits.com/boston/address/53-glen-rd/) | 0.24 mi S | Roofing | PARTIAL Shingle Roofing Replacement //. - EPDM Membrane Replacement //. - Skylight Replacement – EPDM Rubber Roof (VELUX Skylights – X Units) | $9,300 | [SF1847289](https://nearbypermits.com/boston/permit/SF1847289/) |
| May 11, 2026 | [27 School St](https://nearbypermits.com/boston/address/27-school-st/) | 0.21 mi NE | Plumbing | gas boiler replacement plumbing permit also pulled, 27 school st place roxbury is the property address (the portal didnt show school st place so mentioning to be sure its accurate) | $10,000 | [PL1847363](https://nearbypermits.com/boston/permit/PL1847363/) |
| May 11, 2026 | [27 School St](https://nearbypermits.com/boston/address/27-school-st/) | 0.21 mi NE | Plumbing | Gas boiler replacement- 85k BTU (plumbing permit also being pulled) address is 27 school st place Roxbury/Boston 02119 | $15,000 | [G1847350](https://nearbypermits.com/boston/permit/G1847350/) |
| May 5, 2026 | [10 Ophir St](https://nearbypermits.com/boston/address/10-ophir-st/) | 0.19 mi W | Alteration or repair | Mass Save Insulation | $7,611 | [SF1843737](https://nearbypermits.com/boston/permit/SF1843737/) |

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-05 15:05 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Map, all 3 permits at this address and 68 nearby: https://nearbypermits.com/boston/address/18-olmstead-st/