# Building permits at 20 Frontenac St, Boston, MA

The biggest project within a quarter mile since May 1: a $565,200 project at 2-26 Marden Av, permitted Jun 4.

Seven permits on record here. The newest, Nov 18, 2024: Attic insulation and air sealing to R-60 in common area attic. Within a quarter mile, the city has issued 57 more permits (56 projects) since May 1. A zoning hearing Nov 10 covers 1117 to 1125 Blue Hill Av, 680 ft northwest.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Nov 18, 2024 | Alteration or repair | Attic insulation and air sealing to R-60 in common area attic. No in-unit work. | $7,300 | [SF1671421](https://nearbypermits.com/boston/permit/SF1671421/) |
| Jul 19, 2012 | Plumbing | remove replace kit baths | $1,000 | [PL164007](https://nearbypermits.com/boston/permit/PL164007/) |
| Mar 30, 2012 | Plumbing | 20 B Replace boiler | $1,500 | [G127966](https://nearbypermits.com/boston/permit/G127966/) |
| Mar 30, 2012 | Plumbing | 20 A replace boiler | $1,500 | [G127964](https://nearbypermits.com/boston/permit/G127964/) |
| Mar 30, 2012 | Plumbing | 20 C replace boiler | $1,500 | [G127956](https://nearbypermits.com/boston/permit/G127956/) |
| Nov 5, 2010 | Plumbing | Hwh replacement | $2,500 | [PL50000](https://nearbypermits.com/boston/permit/PL50000/) |
| Nov 5, 2010 | Plumbing | Hwh replacement in B | $2,500 | [G50001](https://nearbypermits.com/boston/permit/G50001/) |

## Within ¼ mi since May 1, 2026

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

### This block (250 to 1,000 ft), 26 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | [676 Morton St](https://nearbypermits.com/boston/address/676-morton-st/) | 750 ft W | Roofing | Remove ONE Curb Mounted Skylight and close in hole (Middle skylight unit without Rubber encapsulation). Rubber Roof Maintenance. | $7,499 | [SF1901124](https://nearbypermits.com/boston/permit/SF1901124/) |
| Sep 22, 2026 | [188 Woodrow Av](https://nearbypermits.com/boston/address/188-woodrow-av/) | 890 ft NE | Alteration or repair | Replace existing rear wood deck with composite and PVC railing. | $10,000 | [SF1903295](https://nearbypermits.com/boston/permit/SF1903295/) |
| Sep 17, 2026 | [725 Morton St](https://nearbypermits.com/boston/address/725-morton-st/) | 360 ft SW | Electrical | full electrical wiring installation across all three floors of the property, along with installation of outlets and lighting fixtures on each floor and smoke detectors throughout. Work also includes corrections to previously completed first-floor electrical work performed by another contractor, addr | $16,000 | [E1899995](https://nearbypermits.com/boston/permit/E1899995/) |
| Sep 15, 2026 | [24 Wilcock St](https://nearbypermits.com/boston/address/24-wilcock-st/) | 920 ft NW | Roofing | replace the asphalt roof on home. | $9,500 | [SF1901106](https://nearbypermits.com/boston/permit/SF1901106/) |
| Sep 14, 2026 | [11 Deering Rd](https://nearbypermits.com/boston/address/11-deering-rd/) | 700 ft SW | Electrical | Reconstruction of water-damaged areas to restore the residence to its pre-loss condition, including insulation, structural framing only if required, drywall, blueboard and plaster, painting, flooring, cabinetry, countertops, interior doors, trim, plumbing, electrical, finish carpentry, | $60,414 | [SF1883582](https://nearbypermits.com/boston/permit/SF1883582/) |
| Sep 14, 2026 | [18 Leston St](https://nearbypermits.com/boston/address/18-leston-st/) | 640 ft S | Electrical | Low voltage alarm install | $1,200 | [ELV1900289](https://nearbypermits.com/boston/permit/ELV1900289/) |
| Sep 11, 2026 | [19 Winston Rd](https://nearbypermits.com/boston/address/19-winston-rd/) | 770 ft E | Fire systems | Replace existing fire alarm panel with a new digital fire alarm panel and cellular communicator in a BHA owned property. Outage and reconnection will be a 6-8 hour duration. | $6,000 | [EFA1900341](https://nearbypermits.com/boston/permit/EFA1900341/) |
| Aug 28, 2026 | [12 Leston St](https://nearbypermits.com/boston/address/12-leston-st/) | 580 ft S | Alteration or repair | install 1800sq ft siding including trim and gutters - no change to structure | $82,659 | [SF1891689](https://nearbypermits.com/boston/permit/SF1891689/) |
| Aug 28, 2026 | [12 Leston St](https://nearbypermits.com/boston/address/12-leston-st/) | 580 ft S | Alteration or repair | remove and replace 19 windows and one entry door - same size as existing - no change in structure | $70,799 | [SF1891659](https://nearbypermits.com/boston/permit/SF1891659/) |
| Aug 14, 2026 | [19 Hildreth St](https://nearbypermits.com/boston/address/19-hildreth-st/) | 980 ft SE | Plumbing | Retest of 1st floor gas line | $1,000 | [G1887749](https://nearbypermits.com/boston/permit/G1887749/) |
| Aug 6, 2026 | [19 Hildreth St](https://nearbypermits.com/boston/address/19-hildreth-st/) | 980 ft SE | Plumbing | Gas re-test for floor #1. | $1,000 | [G1880981](https://nearbypermits.com/boston/permit/G1880981/) |
| Jul 31, 2026 | [35 Leston St](https://nearbypermits.com/boston/address/35-leston-st/) | 860 ft S | Plumbing | replacement of 3 gas boilers in Apt 1,2 and 3 | $20,000 | [PL1879501](https://nearbypermits.com/boston/permit/PL1879501/) |
| Jul 31, 2026 | [35 Leston St](https://nearbypermits.com/boston/address/35-leston-st/) | 860 ft S | Plumbing | replacement of 3 gas boilers for APT 1, 2 AND 3 | $20,000 | [G1879499](https://nearbypermits.com/boston/permit/G1879499/) |
| Jul 31, 2026 | [26 Deering Rd](https://nearbypermits.com/boston/address/26-deering-rd/) | 870 ft W | Alteration or repair | Electrical wiring to install (2) 36000 btu multi zone outdoor unit with (8) 6k mini splits, (2) 9k mini splits, and (2) proterra 65 gal. Smart hight efficiency hybrid heat pump water heater. | $3,500 | [E1881027](https://nearbypermits.com/boston/permit/E1881027/) |
| Jul 24, 2026 | [8 Leston St](https://nearbypermits.com/boston/address/8-leston-st/) | 510 ft S | Roofing | Strip and replace roofing material Install metal covering over facia | $10,500 | [SF1877140](https://nearbypermits.com/boston/permit/SF1877140/) |
| Jul 21, 2026 | [23 Goodale Rd](https://nearbypermits.com/boston/address/23-goodale-rd/) | 900 ft SW | Alteration or repair | Second and third floor only; insulation and air sealing to R-60. | $1,000 | [SF1873994](https://nearbypermits.com/boston/permit/SF1873994/) |
| Jul 14, 2026 | [39 Baird St](https://nearbypermits.com/boston/address/39-baird-st/) | 910 ft NW | Plumbing | update, Repair, replace existing, | $127,765 | [PL1871905](https://nearbypermits.com/boston/permit/PL1871905/) |
| Jul 8, 2026 | [50 Winston Rd](https://nearbypermits.com/boston/address/50-winston-rd/) | 460 ft E | Electrical | Add 2x new Counter circuits for kitchen. Running conduit from basement to unit 2Ls kitchen | $800 | [E1868763](https://nearbypermits.com/boston/permit/E1868763/) |
| Jun 30, 2026 | [69 Lucerne St](https://nearbypermits.com/boston/address/69-lucerne-st/) | 980 ft N | Alteration or repair | Weatherization, Insulation, Air Sealing | $3,091 | [SF1862661](https://nearbypermits.com/boston/permit/SF1862661/) |
| Jun 30, 2026 | [6 Deering Rd](https://nearbypermits.com/boston/address/6-deering-rd/) | 770 ft SW | Alteration or repair | Structural repair in basement. Remove and replace deteriorated main girder with new 3-ply LVL beam. Replace 3 lally columns with new 4 inch code-compliant columns. Excavate and pour new concrete footings per engineer. Install temporary shoring during work. No change to use or unit count. | $17,390 | [ALT1856292](https://nearbypermits.com/boston/permit/ALT1856292/) |
| Jun 29, 2026 | [36 Deering Rd](https://nearbypermits.com/boston/address/36-deering-rd/) | 950 ft W | Alteration or repair | renovation of existing 3 level porch | $67,150 | [SF1860146](https://nearbypermits.com/boston/permit/SF1860146/) |
| Jun 26, 2026 | [83 Wildwood St](https://nearbypermits.com/boston/address/83-wildwood-st/) | 950 ft S | Electrical | Temporary service | $500 | [ETS1865224](https://nearbypermits.com/boston/permit/ETS1865224/) |
| Jun 10, 2026 | [7 Havelock St](https://nearbypermits.com/boston/address/7-havelock-st/) | 700 ft NW | Roofing | Remove and install 25 squares of architectural shingles | $18,500 | [SF1859484](https://nearbypermits.com/boston/permit/SF1859484/) |
| Jun 9, 2026 | [79 Wildwood St](https://nearbypermits.com/boston/address/79-wildwood-st/) | 920 ft S | Electrical | Replacement of broken pipe on service after tree took it down | $1,000 | [E1856121](https://nearbypermits.com/boston/permit/E1856121/) |
| Jun 4, 2026 | [2-26 Marden Av](https://nearbypermits.com/boston/address/2--26-marden-av/) | 860 ft E | Roofing | remove and replace roof shingles, siding, and deck boards and rails | $565,200 | [SF1856805](https://nearbypermits.com/boston/permit/SF1856805/) |
| May 6, 2026 | [23 Goodale Rd](https://nearbypermits.com/boston/address/23-goodale-rd/) | 900 ft SW | Electrical | Building service upgrade to 400 amps. Installing ASHP in all 3 units. Unit 1 - (2) external condensers, (6) indoor head units Unit 2 - (2) external condensers, (6) indoor head units Unit 3 - (2) external condensers, (6) indoor head units | $90,000 | [E1844701](https://nearbypermits.com/boston/permit/E1844701/) |

### Farther (1,000 ft to ¼ mi), 31 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | [73 Deering Rd](https://nearbypermits.com/boston/address/73-deering-rd/) | 0.24 mi W | Solar | Installation of roof mounted photovoltaic solar systems, 9.02 KW 22 panels with installation of 1 tesla powerwall3 battery installed on exterior of home | $80,400 | [SF1904851](https://nearbypermits.com/boston/permit/SF1904851/) |
| Sep 30, 2026 | [73 Deering Rd](https://nearbypermits.com/boston/address/73-deering-rd/) | 0.24 mi W | Solar | Installation of roof mounted photovoltaic solar systems, 9.02 KW 22 panels with installation of 1 tesla powerwall3 battery installed on exterior of home | $80,400 | [E1904854](https://nearbypermits.com/boston/permit/E1904854/) |
| Sep 11, 2026 | [14 Hosmer St](https://nearbypermits.com/boston/address/14-hosmer-st/) | 0.24 mi S | Plumbing | replacement of a range | $200 | [G1899171](https://nearbypermits.com/boston/permit/G1899171/) |
| Sep 4, 2026 | [10 Hosmer St](https://nearbypermits.com/boston/address/10-hosmer-st/) | 0.24 mi S | Fire systems | install 4 smokes detector 2 carbon monoxide detectors only inside the apartment on the second floor. | $3,000 | [EFA1896847](https://nearbypermits.com/boston/permit/EFA1896847/) |
| Sep 4, 2026 | [10 Hosmer St](https://nearbypermits.com/boston/address/10-hosmer-st/) | 0.24 mi S | Electrical | rewired apartment 25 outlet 12 switches 10 light fixtures 1 dispose 1 central air /ac 1 boiler 100 amp panel inside the unit | $8,500 | [E1896849](https://nearbypermits.com/boston/permit/E1896849/) |
| Aug 31, 2026 | [84 Willowwood St](https://nearbypermits.com/boston/address/84-willowwood-st/) | 0.23 mi E | Plumbing | Gas furnace installation | $6,500 | [G1891727](https://nearbypermits.com/boston/permit/G1891727/) |
| Aug 28, 2026 | [48 Deering Rd](https://nearbypermits.com/boston/address/48-deering-rd/) | 0.20 mi W | Electrical | rewire 3 family house 200amps service upgrade | $40,000 | [E1895564](https://nearbypermits.com/boston/permit/E1895564/) |
| Aug 27, 2026 | [10 Sutton St](https://nearbypermits.com/boston/address/10-sutton-st/) | 0.20 mi S | Plumbing | install: toilets, shower, lav, sink and laundry hook up | $11,000 | [PL1892884](https://nearbypermits.com/boston/permit/PL1892884/) |
| Aug 26, 2026 | [39 Johnston Rd](https://nearbypermits.com/boston/address/39-johnston-rd/) | 0.23 mi NW | Electrical | check service for reinstall of meter by Eversource for third floor unit. | $250 | [E1894661](https://nearbypermits.com/boston/permit/E1894661/) |
| Aug 25, 2026 | [92 Willowwood St](https://nearbypermits.com/boston/address/92-willowwood-st/) | 0.23 mi E | Roofing | Roof replacement | $18,500 | [SF1891839](https://nearbypermits.com/boston/permit/SF1891839/) |
| Aug 25, 2026 | [84 Willowwood St](https://nearbypermits.com/boston/address/84-willowwood-st/) | 0.23 mi E | Plumbing | tankless water heater installed | $6,500 | [PL1891738](https://nearbypermits.com/boston/permit/PL1891738/) |
| Aug 24, 2026 | [46-48 Mountain Av](https://nearbypermits.com/boston/address/46--48-mountain-av/) | 0.24 mi E | Plumbing | remodeling three bathrooms and three kitchens on floors 1 2 and 3 | $15,000 | [PL1891402](https://nearbypermits.com/boston/permit/PL1891402/) |
| Aug 24, 2026 | [46-48 Mountain Av](https://nearbypermits.com/boston/address/46--48-mountain-av/) | 0.24 mi E | Plumbing | gas piping | $1,000 | [G1891408](https://nearbypermits.com/boston/permit/G1891408/) |
| Aug 21, 2026 | [59 Goodale Rd](https://nearbypermits.com/boston/address/59-goodale-rd/) | 0.21 mi W | Alteration or repair | kitchen Remodeling, including installation/replacement of cabinets Tile, Paint. Install bathroom shower wall tile. | $16,400 | [SF1891027](https://nearbypermits.com/boston/permit/SF1891027/) |
| Jul 21, 2026 | [48 Deering Rd](https://nearbypermits.com/boston/address/48-deering-rd/) | 0.20 mi W | Plumbing | Renovate the entire 3 family house | $20,000 | [PL1874724](https://nearbypermits.com/boston/permit/PL1874724/) |
| Jul 16, 2026 | [44 Lucerne St](https://nearbypermits.com/boston/address/44-lucerne-st/) | 0.23 mi NE | Plumbing | Replacing a gas fired water heater in a mechanical closet on the 2nd floor | $2,500 | [PL1872316](https://nearbypermits.com/boston/permit/PL1872316/) |
| Jul 16, 2026 | [44 Lucerne St](https://nearbypermits.com/boston/address/44-lucerne-st/) | 0.23 mi NE | Plumbing | Replacing a gas fired water heater in a mechanical closet on 2nd floor | $2,500 | [G1872322](https://nearbypermits.com/boston/permit/G1872322/) |
| Jul 16, 2026 | [20 Sutton St](https://nearbypermits.com/boston/address/20-sutton-st/) | 0.22 mi S | Alteration or repair | Extension of living space from unit one into basement.; renovation of a basement, framing, flooring, drywall, insulation and painting | $49,400 | [ALT1848144](https://nearbypermits.com/boston/permit/ALT1848144/) |
| Jul 15, 2026 | [9 Hansborough St](https://nearbypermits.com/boston/address/9-hansborough-st/) | 0.24 mi N | Plumbing | Replace heating furnace | $5,000 | [G1867237](https://nearbypermits.com/boston/permit/G1867237/) |
| Jul 10, 2026 | [10 Hosmer St](https://nearbypermits.com/boston/address/10-hosmer-st/) | 0.24 mi S | Alteration or repair | Install new vinyl siding and gutters | $16,000 | [SF1862755](https://nearbypermits.com/boston/permit/SF1862755/) |
| Jul 4, 2026 | [12 Verrill St](https://nearbypermits.com/boston/address/12-verrill-st/) | 0.24 mi S | Solar | Installation of roof mount solar system | $45,633 | [SF1850934](https://nearbypermits.com/boston/permit/SF1850934/) |
| Jul 1, 2026 | [12 Verrill St](https://nearbypermits.com/boston/address/12-verrill-st/) | 0.24 mi S | Solar | Install 26 solar panels 10.66 kW | $45,633 | [E1850926](https://nearbypermits.com/boston/permit/E1850926/) |
| Jun 22, 2026 | [429 Norfolk St](https://nearbypermits.com/boston/address/429-norfolk-st/) | 0.24 mi SE | Electrical | Diesel generator to Power Inflatables for duration of event | $400 | [E1861796](https://nearbypermits.com/boston/permit/E1861796/) |
| Jun 18, 2026 | [46-48 Mountain Av](https://nearbypermits.com/boston/address/46--48-mountain-av/) | 0.24 mi E | Electrical | Upgrading previous electrical work. Roughing out 3 units and Common area, and finish work | $15,000 | [E1860105](https://nearbypermits.com/boston/permit/E1860105/) |
| Jun 4, 2026 | [59 Goodale Rd](https://nearbypermits.com/boston/address/59-goodale-rd/) | 0.21 mi W | Electrical | Repairs and replacement for ceiling and walls electrical boxes. Locations : 3 Bedrooms, Living room, Kitchen and Entrance. work to be performed in 2nd floor appartement | $3,500 | [E1857201](https://nearbypermits.com/boston/permit/E1857201/) |
| May 22, 2026 | [71 Willowwood St](https://nearbypermits.com/boston/address/71-willowwood-st/) | 0.20 mi E | Electrical | Adding 2 meters | $6,500 | [E1849453](https://nearbypermits.com/boston/permit/E1849453/) |
| May 18, 2026 | [37 Woolson St](https://nearbypermits.com/boston/address/37-woolson-st/) | 0.22 mi S | Plumbing | Retest de gas line to check for leaks on unit 03 | $1,000 | [G1849519](https://nearbypermits.com/boston/permit/G1849519/) |
| May 13, 2026 | [62 Mountain Av](https://nearbypermits.com/boston/address/62-mountain-av/) | 0.24 mi E | Electrical | Replace variable speed bath fan, with controls. Site id: cap-24820 | $2,000 | [E1848634](https://nearbypermits.com/boston/permit/E1848634/) |
| May 5, 2026 | [167 Woodrow Av](https://nearbypermits.com/boston/address/167-woodrow-av/) | 0.23 mi NE | Electrical | Wire two tankless. | $800 | [E1844655](https://nearbypermits.com/boston/permit/E1844655/) |
| May 4, 2026 | [39 Wilcock St](https://nearbypermits.com/boston/address/39-wilcock-st/) | 0.22 mi NW | Electrical | public meter | $200 | [E1845488](https://nearbypermits.com/boston/permit/E1845488/) |
| May 1, 2026 | [52 Woolson St](https://nearbypermits.com/boston/address/52-woolson-st/) | 0.23 mi S | Fire systems | Installing addressable fire alarm system that consists of smokes, horn strobes and pulls in the common hallways. Sounders in the bedrooms. All signals will transmitted to a UL listed Central Station. | $6,000 | [EFA1843883](https://nearbypermits.com/boston/permit/EFA1843883/) |

## Zoning requests nearby

Hearings are public: you can comment or attend. Dates can move; check the city's page before you go.

| Status | Hearing | Address | Distance | Request | Case | City's words | Filed |
|---|---|---|---|---|---|---|---|
| Requested | Nov 10, 2026 | 1117 to 1125 Blue Hill Av | 680 ft NW | To remove the previous proviso relief… | [BOA1783948](https://www.boston.gov/appeal-tracker) | "Hearing Rescheduled" | 2025-09-29 |
| Requested |  | 28 Goodale Rd | 0.19 mi SW | Zoning appeal; the description is on the city's appeal tracker. | [BOA1874558](https://www.boston.gov/appeal-tracker) | "Community Process" | 2026-07-20 |
| No decision posted | Sep 22, 2026 | 655 Morton St | 940 ft W | To change Occupancy from 3-family house to a -family house | [BOA1770910](https://www.boston.gov/appeal-tracker) | "Hearing Concluded" | 2025-08-29 |
| Requested |  | 1102 to 1106 Blue Hill Av | 710 ft N | To confirm occupancy as Beauty salon, Church with adult day care, Hardware store w/ Uhaul rental… | [BOA1765083](https://www.boston.gov/appeal-tracker) | "Community Process" | 2025-08-18 |

## More on this street

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

- [6-10 Frontenac St](https://nearbypermits.com/boston/address/6--10-frontenac-st/): newest permit Mar 16, 2026

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-10 19:22 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 10, 15:17 UTC.

Map, all 7 permits at this address and 57 nearby: https://nearbypermits.com/boston/address/20-frontenac-st/