# Building permits at 99 Middlesex Ave, Somerville, MA

The biggest project within a quarter mile since May 1: a $25M alteration or repair at 188 Assembly Park, permitted Aug 18.

Five permits on record here. The newest, Jun 2, 2025: Furnish and install (2) new rooftop units and associated ductwork. Within a quarter mile, the city has issued 47 more permits (44 projects) since May 1.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Jun 2, 2025 | Mechanical (HVAC) | Furnish and install (2) new rooftop units and associated ductwork. Furnish and install ductwork for (4) existing rooftop units. provide and install (69) RGDs and associated insulated flex duct. | $162,000 | [SM25-000109](https://nearbypermits.com/somerville/permit/SM25-000109/) |
| Mar 19, 2025 | Electrical | Installation of low voltage HVAC wiring for (4) Rooftop Thermostats | $10,000 | [E25-000351](https://nearbypermits.com/somerville/permit/E25-000351/) |
| Jan 31, 2025 | Mechanical (HVAC) | Demo existing ductwork.. Furnish and install (4) new rooftop units and associated duct drops. | $391,000 | [SM24-000241](https://nearbypermits.com/somerville/permit/SM24-000241/) |
| Nov 18, 2024 | Plumbing | Demo of existing plumbing and future plumbing connections for shell space | Not listed | [P24-000691](https://nearbypermits.com/somerville/permit/P24-000691/) |
| Nov 18, 2024 | Plumbing | Install of new gas piping to serve 4 new Gas fired rooftop units | Not listed | [G24-000546](https://nearbypermits.com/somerville/permit/G24-000546/) |

## Within ¼ mi since May 1, 2026

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

### This block (250 to 1,000 ft), 25 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | [133 Middlesex Ave](https://nearbypermits.com/somerville/address/133-middlesex-ave/) | 420 ft N | Other | To Erect a 40x100 Temporary Tent on 10/5/26 Event on 10/6/26 Removed 10/8/26. Tent will have (2) 6' Exits w/illum. Exit Signs & Fire Extinguishers. | $7,645 | [B26-001545](https://nearbypermits.com/somerville/permit/B26-001545/) |
| Sep 30, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Plumbing | Installation of one new electric water heater in ceiling to feed the floor, including domestic water, recirculation, relief, drain, and associated piping connections. Installation of new tenant plumbing fixtures, including domestic water, sanitary, vent, and specialty waste piping as required. Scope | Not listed | [P26-000567](https://nearbypermits.com/somerville/permit/P26-000567/) |
| Sep 28, 2026 | [133 Middlesex Ave](https://nearbypermits.com/somerville/address/133-middlesex-ave/) | 420 ft N | Other | Rooftop Unit Replacement @ 105 Middlesex Ave | $93,010 | [SM26-000185](https://nearbypermits.com/somerville/permit/SM26-000185/) |
| Sep 15, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Electrical | F&I of new power, lighting, fire alram, tel/data and security infrastructure on Level 3. New power panels and transformers for electric room. Level 3 - Building Permit Application #B26-000877 | $750,000 | [E26-001352](https://nearbypermits.com/somerville/permit/E26-001352/) |
| Sep 15, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Electrical | F&I of new power, lighting, fire alram, tel/data and security infrastructure on Level 11. New power panels and transfs for electric room & (1) ATS. | $895,000 | [E26-001351](https://nearbypermits.com/somerville/permit/E26-001351/) |
| Sep 15, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Electrical | F&I of new power, lighting, fire alram, tel/data and security infrastructure on Level 10. New power panels and transformers for electric room. Level 10 - Building Permit Application #B26-001128 | $900,000 | [E26-001350](https://nearbypermits.com/somerville/permit/E26-001350/) |
| Sep 15, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Electrical | F&I of new power, lighting, fire alarm, tel/data and security infrastructure on Level 12. New power panels and transformers for electric room. Level 12 - Building Permit Application #B26-001071 | $950,000 | [E26-001342](https://nearbypermits.com/somerville/permit/E26-001342/) |
| Sep 15, 2026 | [698 Assembly Row](https://nearbypermits.com/somerville/address/698-assembly-row/) | 970 ft NE | Sign | Clients logo has changed from capital e to small e. The existing signs need to be changed over | Not listed | [B26-001086](https://nearbypermits.com/somerville/permit/B26-001086/) |
| Sep 10, 2026 | [698 Assembly Row](https://nearbypermits.com/somerville/address/698-assembly-row/) | 970 ft NE | Electrical | Wiring for 4 sign replacements | $2,600 | [E26-001107](https://nearbypermits.com/somerville/permit/E26-001107/) |
| Sep 8, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Electrical | F&I of power feeders, (1) added section to existing switchboard, (3) new panels, (3) ATS's in Penthouse, (2) on Level 10 and (1) on Level 3. Enabling - Building Permit Application #B26-000709 | $600,000 | [E26-001088](https://nearbypermits.com/somerville/permit/E26-001088/) |
| Sep 3, 2026 | [598 Assembly Row](https://nearbypermits.com/somerville/address/598-assembly-row/) | 850 ft NE | Electrical | replace 5 rtu's | $8,000 | [E26-001281](https://nearbypermits.com/somerville/permit/E26-001281/) |
| Sep 2, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Plumbing | Installation of one new electric water heater each on floors 11 and 12, including domestic water, recirculation, relief, drain, and associated piping. Installation of new tenant plumbing features on all floors, including domestic water, sanitary, vent, and specialty waste piping as required. Scope i | Not listed | [P26-000525](https://nearbypermits.com/somerville/permit/P26-000525/) |
| Aug 19, 2026 | [300 Artisan Way](https://nearbypermits.com/somerville/address/300-artisan-way/) | 780 ft NE | Plumbing | Replace about 40ft of cast iron, reported being back pitch | Not listed | [P26-000375](https://nearbypermits.com/somerville/permit/P26-000375/) |
| Aug 18, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Alteration or repair | This project includes the fit-out and related work for the tenth floor of the building. The program for this floor is office, command centers (open office), and associated support spaces. No occupancy classifications are changing from the original base building. Level 10 | $13,488,390 | [B26-001128](https://nearbypermits.com/somerville/permit/B26-001128/) |
| Aug 18, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Alteration or repair | This project includes the fit-out and related work for the eleventh and twelfth floor of the building. The main program for the eleventh and twelfth floor is office, with associated support spaces. No occupancy classifications are changing from the original base building. Level 12 | $25,450,547 | [B26-001071](https://nearbypermits.com/somerville/permit/B26-001071/) |
| Aug 18, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Alteration or repair | This project includes the fit-out and related work for the third floor of the building. The main program for the third floor is vivarium, office, and labs with assocaited support spaces. A new elevator is being provided from the dedicated loading dock on the first floor up to the third floor. The ex | $17,234,642 | [B26-000877](https://nearbypermits.com/somerville/permit/B26-000877/) |
| Jul 22, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Alteration or repair | This project includes the base building enabling work to accommodate future tenant improvements to all 12 floors of the existing building. Interior fit-out for individual floors to be submitted under separate cover. Work includes selective demolition, mechanical, electrical and plumbing modification | $9,801,881 | [B26-000709](https://nearbypermits.com/somerville/permit/B26-000709/) |
| Jul 15, 2026 | [340 Grand Union Blvd](https://nearbypermits.com/somerville/address/340-grand-union-blvd/) | 950 ft SE | Electrical | Meter only install by Eversource. Work was originally completed and inspected, no meter was ever installed. New tenant in space needs meter. | $500 | [E26-001008](https://nearbypermits.com/somerville/permit/E26-001008/) |
| Jul 8, 2026 | [355 Artisan Way](https://nearbypermits.com/somerville/address/355-artisan-way/) | 970 ft NE | Electrical | bond temporary generator to building steel. Work @ 395 artisan way | $1,000 | [E26-000961](https://nearbypermits.com/somerville/permit/E26-000961/) |
| Jun 23, 2026 | [188 Assembly Park Dr](https://nearbypermits.com/somerville/address/188-assembly-park-dr/) | 530 ft S | Plumbing | tenant fit out for new core and shell building - other includes (5) eyewashes, (4) trench drains and (1) hose down station | Not listed | [P26-000356](https://nearbypermits.com/somerville/permit/P26-000356/) |
| Jun 23, 2026 | [188 Assembly Park Dr](https://nearbypermits.com/somerville/address/188-assembly-park-dr/) | 530 ft S | Plumbing | tenant fit out for new core and shell building | Not listed | [P26-000355](https://nearbypermits.com/somerville/permit/P26-000355/) |
| Jun 4, 2026 | [175 Fellsway](https://nearbypermits.com/somerville/address/175-fellsway/) | 880 ft NW | Electrical | Somerville District Court - Install new DGP, (3) CTs, CAT6 from gas meter to DGP, wire 18/4 to new DPG. Sour136x | $4,800 | [E26-000800](https://nearbypermits.com/somerville/permit/E26-000800/) |
| Jun 1, 2026 | [188 Assembly Park](https://nearbypermits.com/somerville/address/188-assembly-park/) | 530 ft S | Electrical | Electrical Demo permit | $2,000 | [E26-000761](https://nearbypermits.com/somerville/permit/E26-000761/) |
| May 11, 2026 | [335 Harold Cohen St](https://nearbypermits.com/somerville/address/335-harold-cohen-st/) | 890 ft SE | Plumbing | Testing of Main Gas Line | Not listed | [G26-000236](https://nearbypermits.com/somerville/permit/G26-000236/) |
| May 5, 2026 | [335 Harold Cohen Dr](https://nearbypermits.com/somerville/address/335-harold-cohen-dr/) | 890 ft SE | Mechanical (HVAC) | 3 exiting split, Install a ductwork, exhaust venting, gills | $60,500 | [SM26-000028](https://nearbypermits.com/somerville/permit/SM26-000028/) |

### Farther (1,000 ft to ¼ mi), 22 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Oct 5, 2026 | [301 Assembly Row](https://nearbypermits.com/somerville/address/301-assembly-row/) | 0.23 mi E | Other | To Erect a 30x130 Temporary Ten Tent on 10/2/26 Event on 10/6/26 Removed 10/8/26. Tent will have (4) 6' Exits w/illum. Exit Signs & Fire Extinguishers. | $7,500 | [B26-001550](https://nearbypermits.com/somerville/permit/B26-001550/) |
| Sep 28, 2026 | [449 Canal St](https://nearbypermits.com/somerville/address/449-canal-st/) | 0.19 mi E | Electrical | BDA System Modification / Reconfiguration | $10,949 | [E26-001387](https://nearbypermits.com/somerville/permit/E26-001387/) |
| Sep 11, 2026 | [445 Artisan Way](https://nearbypermits.com/somerville/address/445-artisan-way/) | 0.22 mi NE | Plumbing | Relocation of existing 4" cast iron sanitary stack. @ 450 Canal St | Not listed | [P26-000529](https://nearbypermits.com/somerville/permit/P26-000529/) |
| Aug 5, 2026 | [10 Ten Hills Rd](https://nearbypermits.com/somerville/address/10-ten-hills-rd/) | 0.20 mi W | Roofing | Asphalt shingle roofing replacement 27 SQ // | $23,220 | [B26-001135](https://nearbypermits.com/somerville/permit/B26-001135/) |
| Aug 3, 2026 | [301 Assembly Row](https://nearbypermits.com/somerville/address/301-assembly-row/) | 0.23 mi E | Electrical | Remove (28) Speaker/Strobes on Balconies and box inside the unit with blank plates - Balconies being converted to Juliets. @ 485 Foley St | $4,809 | [E26-000913](https://nearbypermits.com/somerville/permit/E26-000913/) |
| Jul 14, 2026 | [301 Assembly Row](https://nearbypermits.com/somerville/address/301-assembly-row/) | 0.23 mi E | Alteration or repair | Removal of 28 existing wood cantilevered balconies and installing new juliet railings. | $280,000 | [B26-000885](https://nearbypermits.com/somerville/permit/B26-000885/) |
| Jul 7, 2026 | [445 Artisan Way](https://nearbypermits.com/somerville/address/445-artisan-way/) | 0.22 mi NE | Plumbing | Renovation of existing dog wash space to a new 2 piece bath, and kitchenette. Replacement of 3 existing kitchen sinks | Not listed | [P26-000384](https://nearbypermits.com/somerville/permit/P26-000384/) |
| Jul 7, 2026 | [445 Artisan Way](https://nearbypermits.com/somerville/address/445-artisan-way/) | 0.22 mi NE | Plumbing | Installation of gas piping for 3 new outdoor gas grills | Not listed | [G26-000318](https://nearbypermits.com/somerville/permit/G26-000318/) |
| Jun 30, 2026 | [445 Artisan Way](https://nearbypermits.com/somerville/address/445-artisan-way/) | 0.22 mi NE | Electrical | Remodel of common area's, 1st floor main Lobby, Lobby Mezzanine, Rear Elevator Lobby, Gym, Retainable Amenities Room, 2nd Floor Lounge. Relocate mail lockers, Relocate amazon lockers, relocate leasing office and break room. Install new lights and relocate receptacles in all area's. Relocate fire ala | $189,000 | [E26-000920](https://nearbypermits.com/somerville/permit/E26-000920/) |
| Jun 30, 2026 | [301 Assembly Row](https://nearbypermits.com/somerville/address/301-assembly-row/) | 0.23 mi E | Electrical | Remove 28 receptacles on outside decks to be removed | $2,000 | [E26-000919](https://nearbypermits.com/somerville/permit/E26-000919/) |
| Jun 23, 2026 | [463 Assembly Row](https://nearbypermits.com/somerville/address/463-assembly-row/) | 0.19 mi E | Electrical | Install sub panel to accommodate new kitchen circuits | $5,500 | [E26-000896](https://nearbypermits.com/somerville/permit/E26-000896/) |
| Jun 22, 2026 | [0 Mystic Ave](https://nearbypermits.com/somerville/address/0-mystic-ave/) | 0.20 mi W | Electrical | Permanent Power for the1200A Feeder Replacement | $5,800 | [E26-000315](https://nearbypermits.com/somerville/permit/E26-000315/) |
| Jun 15, 2026 | [463 Assembly Row](https://nearbypermits.com/somerville/address/463-assembly-row/) | 0.19 mi E | Plumbing | plumbing work installing new fixtures and running pipe for water and removing drains | Not listed | [P26-000331](https://nearbypermits.com/somerville/permit/P26-000331/) |
| Jun 12, 2026 | [463 Assembly Row](https://nearbypermits.com/somerville/address/463-assembly-row/) | 0.19 mi E | Plumbing | Installing new gas fitting and piping | Not listed | [G26-000283](https://nearbypermits.com/somerville/permit/G26-000283/) |
| Jun 11, 2026 | [38 Ten Hills Rd](https://nearbypermits.com/somerville/address/38-ten-hills-rd/) | 0.22 mi NW | Electrical | Install a common meter, disconnect and 100 amp house panel. | $10,000 | [E26-000817](https://nearbypermits.com/somerville/permit/E26-000817/) |
| Jun 10, 2026 | [463 Assembly Row](https://nearbypermits.com/somerville/address/463-assembly-row/) | 0.19 mi E | Electrical | POS & Hood Fan System | $4,000 | [E26-000829](https://nearbypermits.com/somerville/permit/E26-000829/) |
| Jun 8, 2026 | [463 Assembly Row](https://nearbypermits.com/somerville/address/463-assembly-row/) | 0.19 mi E | Mechanical (HVAC) | Install commercial ventilation system,hood,fans, duct work | $102,000 | [SM26-000088](https://nearbypermits.com/somerville/permit/SM26-000088/) |
| Jun 4, 2026 | [463 Assembly Row](https://nearbypermits.com/somerville/address/463-assembly-row/) | 0.19 mi E | Electrical | Relocate electrical for bar renovation WORK @ SALT & STONE Renovation & Repair from Fire Damage: Demo existing electrical as necessary and make safe, relocate existing circuits to provide power for table top receptacles Replace existing lighting as necessary due to fire damage, install new circuits  | $6,000 | [E26-000156](https://nearbypermits.com/somerville/permit/E26-000156/) |
| Jun 3, 2026 | [445 Artisan Way](https://nearbypermits.com/somerville/address/445-artisan-way/) | 0.22 mi NE | Alteration or repair | Amenities Renovations • Selective interior demolition of existing finishes, flooring, millwork, ceilings, lighting fixtures, mirrors, signage, and non load bearing elements for replacement in kind or cosmetic upgrade. • Replacement and refinishing of interior finishes, including flooring, wall f | $772,471 | [B26-000538](https://nearbypermits.com/somerville/permit/B26-000538/) |
| May 12, 2026 | [450 Artisan Way](https://nearbypermits.com/somerville/address/450-artisan-way/) | 0.24 mi NE | Electrical | Installation of 45 tel/data drops in existing space being renovated. This is a separate permit as we did not originally own this work | $18,000 | [E26-000368](https://nearbypermits.com/somerville/permit/E26-000368/) |
| May 11, 2026 | [15 Governor Winthrop Rd](https://nearbypermits.com/somerville/address/15-governor-winthrop-rd/) | 0.23 mi NW | Plumbing | Install (2) Water Heaters | Not listed | [P26-000279](https://nearbypermits.com/somerville/permit/P26-000279/) |
| May 11, 2026 | [15 Governor Winthrop Rd](https://nearbypermits.com/somerville/address/15-governor-winthrop-rd/) | 0.23 mi NW | Plumbing | Install (2) Water Heaters | Not listed | [G26-000230](https://nearbypermits.com/somerville/permit/G26-000230/) |

## More on this street

Other addresses on Middlesex Ave with permits, nearest house number first:

- [95 Middlesex Ave](https://nearbypermits.com/somerville/address/95-middlesex-ave/): newest permit Dec 10, 2025
- [105 Middlesex Ave](https://nearbypermits.com/somerville/address/105-middlesex-ave/): newest permit Oct 21, 2025
- [74 Middlesex Ave](https://nearbypermits.com/somerville/address/74-middlesex-ave/): newest permit Oct 16, 2025
- [133 Middlesex Ave](https://nearbypermits.com/somerville/address/133-middlesex-ave/): newest permit Oct 5, 2026
- [145 Middlesex Ave](https://nearbypermits.com/somerville/address/145-middlesex-ave/): newest permit Jun 30, 2025
- [45 Middlesex Ave](https://nearbypermits.com/somerville/address/45-middlesex-ave/): newest permit May 8, 2025

---
Source: Somerville Inspectional Services Division permit data (https://data.somervillema.gov/d/nneb-s3f7), SomerStat, City of Somerville, ODbL 1.0 (https://opendatacommons.org/licenses/odbl/1-0/). Checked 2026-10-07 08:53 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Contains information from Applications for Permits and Licenses (SomerStat, City of Somerville), which is made available here under the Open Database License (ODbL). Database: https://data.somervillema.gov/d/nneb-s3f7 License: https://opendatacommons.org/licenses/odbl/1-0/

Map, all 5 permits at this address and 47 nearby: https://nearbypermits.com/somerville/address/99-middlesex-ave/