# Building permits at 18 Denny St, Boston, MA

Two permits on record here. The newest, Sep 29: Convert existing single family to two family with an addition on the second floor. Within a quarter mile, the city has issued 44 more permits (43 projects) since May 1.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Sep 29, 2026 | Alteration or repair | Convert existing single family to two family with an addition on the second floor. | $159,000 | [ALT1894409](https://nearbypermits.com/boston/permit/ALT1894409/) |
| Mar 20, 2013 | Plumbing | Replace cold shut off for lavatory sink. | Not listed | [PL228258](https://nearbypermits.com/boston/permit/PL228258/) |

## Within ¼ mi since May 1, 2026

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

### Next door (under 250 ft), 4 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Aug 13, 2026 | [171-173 Savin Hill Av](https://nearbypermits.com/boston/address/171--173-savin-hill-av/) | 230 ft N | Plumbing | replacement of a range | $200 | [G1885850](https://nearbypermits.com/boston/permit/G1885850/) |
| May 27, 2026 | [12 Denny St](https://nearbypermits.com/boston/address/12-denny-st/) | 55 ft NE | Plumbing | bathroom remodel 1 sink 1 toilet, 1 shower 1 laundry | $5,000 | [PL1853512](https://nearbypermits.com/boston/permit/PL1853512/) |
| May 14, 2026 | [12 Denny St](https://nearbypermits.com/boston/address/12-denny-st/) | 55 ft NE | Alteration or repair | Bathroom remodel. Remove and replace existing tile. Demo non-structural wall to enlarge bathroom. Replace one window. | $9,950 | [SF1847626](https://nearbypermits.com/boston/permit/SF1847626/) |
| May 7, 2026 | [12 Denny St](https://nearbypermits.com/boston/address/12-denny-st/) | 55 ft NE | Electrical | Bathroom renovation and install some recess lights, exhaust fans, vanity light and outlets | $2,500 | [E1846786](https://nearbypermits.com/boston/permit/E1846786/) |

### This block (250 to 1,000 ft), 24 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 3, 2026 | [22 Caspian Wy](https://nearbypermits.com/boston/address/22-caspian-wy/) | 630 ft N | Alteration or repair | remove old and install new front porch, new footings, | $55,000 | [SF1902269](https://nearbypermits.com/boston/permit/SF1902269/) |
| Oct 2, 2026 | [6-8 Southview St](https://nearbypermits.com/boston/address/6--8-southview-st/) | 380 ft SE | Roofing | strip and re-roof 28SQ | $15,000 | [SF1904763](https://nearbypermits.com/boston/permit/SF1904763/) |
| Sep 29, 2026 | [26-28 Grampian Wy](https://nearbypermits.com/boston/address/26--28-grampian-wy/) | 940 ft N | Plumbing | New bath Kitchenette | $3,100 | [PL1905449](https://nearbypermits.com/boston/permit/PL1905449/) |
| Sep 25, 2026 | [26-28 Grampian Wy](https://nearbypermits.com/boston/address/26--28-grampian-wy/) | 940 ft N | Electrical | Provide electrical wiring, lighting, switches, GFCIs, and dedicated circuits for basement renovation and powder room per Massachusetts electrical code. | $5,000 | [E1903965](https://nearbypermits.com/boston/permit/E1903965/) |
| Sep 14, 2026 | [14-16 Castle Rock St](https://nearbypermits.com/boston/address/14--16-castle-rock-st/) | 590 ft N | Alteration or repair | Remove existing gutters & downspouts; Repaur fascia as necessary; Install new Fascia Cover, Gutters & Downspouts | $9,000 | [SF1900801](https://nearbypermits.com/boston/permit/SF1900801/) |
| Aug 15, 2026 | [26 Caspian Wy](https://nearbypermits.com/boston/address/26-caspian-wy/) | 680 ft N | Plumbing | Hook up kitchen sink, dishwasher and ice maker at first floor | $1,500 | [PL1887119](https://nearbypermits.com/boston/permit/PL1887119/) |
| Aug 4, 2026 | [22-24 Grampian Wy](https://nearbypermits.com/boston/address/22--24-grampian-wy/) | 910 ft N | Electrical | Rewire of kitchen, Electrical Stove, Kitchen Lights | $6,500 | [E1882001](https://nearbypermits.com/boston/permit/E1882001/) |
| Jul 31, 2026 | [22-24 Grampian Wy](https://nearbypermits.com/boston/address/22--24-grampian-wy/) | 910 ft N | Plumbing | Gas Range | $1,500 | [G1878210](https://nearbypermits.com/boston/permit/G1878210/) |
| Jul 29, 2026 | [22-24 Grampian Wy](https://nearbypermits.com/boston/address/22--24-grampian-wy/) | 910 ft N | Plumbing | Kitchen Remodel | $5,000 | [PL1878209](https://nearbypermits.com/boston/permit/PL1878209/) |
| Jul 28, 2026 | [22-24 Grampian Wy](https://nearbypermits.com/boston/address/22--24-grampian-wy/) | 910 ft N | Alteration or repair | Kitchen renovation - Work will include removal of existing cabinets and counter top, and replacing with new. | $33,871 | [SF1879151](https://nearbypermits.com/boston/permit/SF1879151/) |
| Jul 21, 2026 | [26-28 Grampian Wy](https://nearbypermits.com/boston/address/26--28-grampian-wy/) | 940 ft N | Alteration or repair | Remove insulation, install waterproof barrier and new insulation in basement. Frame half bathroom in basement. Install cabinets and finish walls in basement. No structural work to be performed. Electrical and plumbing to be completed under separate permits. | $60,000 | [SF1873160](https://nearbypermits.com/boston/permit/SF1873160/) |
| Jul 14, 2026 | [160 Grampian Wy](https://nearbypermits.com/boston/address/160-grampian-wy/) | 550 ft NE | Electrical | Wiring Bathroom Office/ living area Roof deck | $3,500 | [E1863740](https://nearbypermits.com/boston/permit/E1863740/) |
| Jun 26, 2026 | [160 Grampian Wy](https://nearbypermits.com/boston/address/160-grampian-wy/) | 550 ft NE | Plumbing | New bathroom in new home addition | $4,000 | [PL1863730](https://nearbypermits.com/boston/permit/PL1863730/) |
| Jun 25, 2026 | [8 Napier Pk](https://nearbypermits.com/boston/address/8-napier-pk/) | 970 ft N | Plumbing | Replacement of gas water heater | $2,204 | [PL1862852](https://nearbypermits.com/boston/permit/PL1862852/) |
| Jun 25, 2026 | [8 Napier Pk](https://nearbypermits.com/boston/address/8-napier-pk/) | 970 ft N | Plumbing | Replacement of gas water heater | $2,204 | [G1862849](https://nearbypermits.com/boston/permit/G1862849/) |
| Jun 17, 2026 | [26 Caspian Wy](https://nearbypermits.com/boston/address/26-caspian-wy/) | 680 ft N | Plumbing | First Floor Gas line for stove | $800 | [G1860359](https://nearbypermits.com/boston/permit/G1860359/) |
| Jun 15, 2026 | [26 Caspian Wy](https://nearbypermits.com/boston/address/26-caspian-wy/) | 680 ft N | Plumbing | Plumbing for 1st Floor 1 Full Bathroom with lav, toilet and shower 1 Laundry hook up with electric dryer | $5,000 | [PL1860354](https://nearbypermits.com/boston/permit/PL1860354/) |
| May 28, 2026 | [140 Savin Hill Av](https://nearbypermits.com/boston/address/140-savin-hill-av/) | 730 ft NW | Roofing | Strip and reroof | $24,000 | [SF1851234](https://nearbypermits.com/boston/permit/SF1851234/) |
| May 28, 2026 | [14 Rockmere St](https://nearbypermits.com/boston/address/14-rockmere-st/) | 780 ft N | Plumbing | installation of water heater | $150 | [PL1853677](https://nearbypermits.com/boston/permit/PL1853677/) |
| May 28, 2026 | [14 Rockmere St](https://nearbypermits.com/boston/address/14-rockmere-st/) | 780 ft N | Plumbing | water heater installation | $1,500 | [G1853673](https://nearbypermits.com/boston/permit/G1853673/) |
| May 21, 2026 | [135 Savin Hill Av](https://nearbypermits.com/boston/address/135-savin-hill-av/) | 750 ft NW | Electrical | Wiring (3) condensers for heat pump system | $6,000 | [E1851767](https://nearbypermits.com/boston/permit/E1851767/) |
| May 8, 2026 | [26 Caspian Wy](https://nearbypermits.com/boston/address/26-caspian-wy/) | 680 ft N | Alteration or repair | Kitchen cabinet upgrade, bath remodel, kitchen floor replacement, rear door replacement. | $59,000 | [SF1846783](https://nearbypermits.com/boston/permit/SF1846783/) |
| May 8, 2026 | [26 Caspian Wy](https://nearbypermits.com/boston/address/26-caspian-wy/) | 680 ft N | Electrical | Install recessed lights in kitchen, add countertop receptacles to new countertop location from existing countertop circuits (kitchen cabinet replacements). New bathroom. | $6,500 | [E1847540](https://nearbypermits.com/boston/permit/E1847540/) |
| May 4, 2026 | [20 Grampian Wy](https://nearbypermits.com/boston/address/20-grampian-wy/) | 890 ft N | Electrical | Remove old BX wiring in stair hall way. support all wiring in affected areas. add new wiring for stair lighting. add new wiirng and circuit for bath floor heat. install new dual function breakers affecting lighting circuits. | $5,000 | [E1840907](https://nearbypermits.com/boston/permit/E1840907/) |

### Farther (1,000 ft to ¼ mi), 16 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 8, 2026 | [42 Grampian Wy](https://nearbypermits.com/boston/address/42-grampian-wy/) | 0.21 mi N | Plumbing | Install 3 tankless water heaters | $10,000 | [PL1905204](https://nearbypermits.com/boston/permit/PL1905204/) |
| Oct 8, 2026 | [42 Grampian Wy](https://nearbypermits.com/boston/address/42-grampian-wy/) | 0.21 mi N | Plumbing | install 3 gas tankless water heaters | $10,000 | [G1905205](https://nearbypermits.com/boston/permit/G1905205/) |
| Oct 5, 2026 | [245 Savin Hill Av](https://nearbypermits.com/boston/address/245-savin-hill-av/) | 0.24 mi E | Plumbing | Gas WH replacement | $2,500 | [PL1906320](https://nearbypermits.com/boston/permit/PL1906320/) |
| Oct 5, 2026 | [245 Savin Hill Av](https://nearbypermits.com/boston/address/245-savin-hill-av/) | 0.24 mi E | Plumbing | Gas furnace and Gas WH replacement | $9,000 | [G1906318](https://nearbypermits.com/boston/permit/G1906318/) |
| Oct 2, 2026 | [231 Savin Hill Av](https://nearbypermits.com/boston/address/231-savin-hill-av/) | 0.22 mi E | Alteration or repair | Removal. of non-bearing interior partition wall and bathroom renovation, replacing existing shower with walk-in shower in same location; no structural changes or changes to use/egress. | $65,000 | [SF1905513](https://nearbypermits.com/boston/permit/SF1905513/) |
| Sep 25, 2026 | [68 Grampian Wy](https://nearbypermits.com/boston/address/68-grampian-wy/) | 0.24 mi NE | Plumbing | gas pipe three furnaces 3 naviens 3 cooktops | $8,000 | [G1903955](https://nearbypermits.com/boston/permit/G1903955/) |
| Sep 21, 2026 | [68 Grampian Wy](https://nearbypermits.com/boston/address/68-grampian-wy/) | 0.24 mi NE | Fire systems | Install a new UL.Cenrtal station fire alarm system | $5,000 | [EFA1900859](https://nearbypermits.com/boston/permit/EFA1900859/) |
| Sep 11, 2026 | [42 Grampian Wy](https://nearbypermits.com/boston/address/42-grampian-wy/) | 0.21 mi N | Fence, wall or deck | Front and back deck boards and railings | $22,000 | [SF1900481](https://nearbypermits.com/boston/permit/SF1900481/) |
| Aug 31, 2026 | [358 Savin Hill Av](https://nearbypermits.com/boston/address/358-savin-hill-av/) | 0.25 mi N | Alteration or repair | Mass Save Insulation | $16,000 | [SF1889545](https://nearbypermits.com/boston/permit/SF1889545/) |
| Aug 25, 2026 | [68 Grampian Wy](https://nearbypermits.com/boston/address/68-grampian-wy/) | 0.24 mi NE | Plumbing | new plumbing in a 3 family | $40,000 | [PL1894133](https://nearbypermits.com/boston/permit/PL1894133/) |
| Aug 21, 2026 | [68 Grampian Wy](https://nearbypermits.com/boston/address/68-grampian-wy/) | 0.24 mi NE | Electrical | Complete rewiring of 3 units and common areas | $35,000 | [E1881284](https://nearbypermits.com/boston/permit/E1881284/) |
| Jul 21, 2026 | [358 Savin Hill Av](https://nearbypermits.com/boston/address/358-savin-hill-av/) | 0.25 mi N | Alteration or repair | Installing replacement windows and vinyl siding. Using same rough opening for windows, installation of vinyl siding and some minor trim replacement | $18,500 | [SF1870095](https://nearbypermits.com/boston/permit/SF1870095/) |
| Jul 13, 2026 | [225 Savin Hill Av](https://nearbypermits.com/boston/address/225-savin-hill-av/) | 0.20 mi E | Alteration or repair | Remove and Replace Existing Cedar Shake Siding, Remove & Replace Existing Gutters in Specified Location | $37,977 | [SF1867691](https://nearbypermits.com/boston/permit/SF1867691/) |
| Jul 9, 2026 | [100 Playstead Rd](https://nearbypermits.com/boston/address/100-playstead-rd/) | 0.20 mi SW | Electrical | meter to be replaced as part of Eversource's AMI project | $1,500 | [E1870478](https://nearbypermits.com/boston/permit/E1870478/) |
| Jun 30, 2026 | [50 Grampian Wy](https://nearbypermits.com/boston/address/50-grampian-wy/) | 0.22 mi N | Plumbing | water piping for boiler replacement | $1,500 | [PL1864819](https://nearbypermits.com/boston/permit/PL1864819/) |
| Jun 30, 2026 | [50 Grampian Wy](https://nearbypermits.com/boston/address/50-grampian-wy/) | 0.22 mi N | Plumbing | gas boiler replacement | $3,600 | [G1864817](https://nearbypermits.com/boston/permit/G1864817/) |

## 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 |  | 68 Grampian Wy | 0.24 mi NE | To extend the living area to the existing enclosed rear porches | [BOA1878924](https://www.boston.gov/appeal-tracker) | "Community Process" | 2026-07-28 |
| Approved | Apr 28, 2026 | 1 Bayside St | 160 ft NE | Zoning appeal: "New 3-family dwelling" | [BOA1781953](https://www.boston.gov/appeal-tracker) | "Appeal Closed", decision "AppProv" | 2025-09-23 |

Boston's decision codes, from its data dictionary (https://data.boston.gov/dataset/37d2e087-ce02-4090-bfdf-22de1ada3b23/resource/e11dcfa5-6f6f-4999-abc3-741f53c6731f/download/zba-data-dictionary.pdf): AppProv, "approved with conditions".

## More on this street

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

- [12 Denny St](https://nearbypermits.com/boston/address/12-denny-st/): newest permit May 27, 2026
- [9 Denny St](https://nearbypermits.com/boston/address/9-denny-st/): newest permit Feb 4, 2025

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-11 07:29 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 11, 04:17 UTC.

Map, both permits at this address and 44 nearby: https://nearbypermits.com/boston/address/18-denny-st/