Nearby Permits
Map of 108 permits within a quarter mile of 20 Prospect StAlteration or repair, 40 Union Sq, Oct 5, 2026Alteration or repair, 34 Columbus Ave, Oct 2, 2026Sign, 286 Somerville Ave, Sep 30, 2026Alteration or repair, 9 Sanborn Ave, Sep 29, 2026Plumbing, 174 Somerville Ave, Sep 24, 2026Plumbing, 26r Clark St, Sep 24, 2026Plumbing, 174 Somerville Ave, Sep 24, 2026Plumbing, 69 Prospect St, Sep 24, 2026Plumbing, 69 Prospect St, Sep 23, 2026Alteration or repair, 32 Stone Ave, Sep 22, 2026Plumbing, 32 Stone Ave, Sep 21, 2026Plumbing, 32 Stone Ave, Sep 21, 2026Alteration or repair, 4 Lake St, Sep 18, 2026Plumbing, 36 Mansfield St, Sep 17, 2026Plumbing, 211 Tremont St, Sep 17, 2026Plumbing, 36 Mansfield St, Sep 17, 2026Electrical, 69 Prospect St, Sep 17, 2026Plumbing, 14 Boston St, Sep 15, 2026Electrical, 286 Somerville Ave, Sep 15, 2026Electrical, 163 Washington St, Sep 15, 2026Demolition, 32 Webster Ave, Sep 15, 2026Alteration or repair, 69 Prospect St, Sep 12, 2026Plumbing, 329 Somerville Ave, Sep 10, 2026Alteration or repair, 163 Washington St, Sep 8, 2026Electrical, 15 Oak St, Sep 3, 2026Electrical, 15 Oak St, Sep 3, 2026Electrical, 17 Oak St, Sep 3, 2026Alteration or repair, 28 Bonner Ave, Sep 3, 2026Electrical, 230 Somerville Ave, Sep 2, 2026Roofing, 9 Sanborn Ave, Aug 27, 2026Solar, 44 Columbus Ave, Aug 27, 2026Alteration or repair, 22 Stone Ave, Aug 24, 2026Demolition, 174 Somerville Ave, Aug 24, 2026Plumbing, 163 Washington St, Aug 19, 2026Electrical, 18 Columbus Ave, Aug 19, 2026Electrical, 44 Columbus Ave, Aug 17, 2026Alteration or repair, 290 Washington St, Aug 17, 2026Electrical, 26 Clark St, Aug 13, 2026Alteration or repair, 69 Prospect St, Aug 10, 2026Electrical, 17 Oak St, Aug 6, 2026Electrical, 290 Washington St, Aug 6, 2026Electrical, 14 Boston St, Aug 6, 2026Alteration or repair, 211 Tremont St, Aug 6, 2026Plumbing, 290 Washington St, Aug 4, 2026Plumbing, 7 Joseph St, Aug 4, 2026Plumbing, 290 Washington St, Aug 4, 2026Alteration or repair, 14 Boston St, Aug 4, 2026Electrical, 21 Union Sq, Jul 31, 2026Electrical, 19b Stone Ave, Jul 29, 2026Electrical, 21 Stone Ave, Jul 29, 2026Alteration or repair, 21 Union Sq, Jul 29, 2026Electrical, 26 Clark St, Jul 28, 2026Roofing, 15 Homer Sq, Jul 25, 2026Electrical, 24 Webster Ave, Jul 20, 2026Plumbing, 2 Tremont Pl, Jul 20, 2026Electrical, 9 Allen St, Jul 15, 2026Alteration or repair, 28 Bonner Ave, Jul 14, 2026Roofing, 18 Linden St, Jul 14, 2026Electrical, 10 Oak St, Jul 13, 2026Roofing, 11 Linden St, Jul 13, 2026Alteration or repair, 24 Warren Ave, Jul 8, 2026Electrical, 17 Bow St, Jul 7, 2026Roofing, 285 Washington St, Jul 7, 2026Electrical, 174 Somerville Ave, Jul 6, 2026Electrical, 24 Webster Ave, Jul 6, 2026Electrical, 174 Somerville Ave, Jul 3, 2026Alteration or repair, 7 Oak St, Jun 30, 2026Mechanical (HVAC), 329 Somerville Ave, Jun 24, 2026Electrical, 329 Somerville Ave, Jun 23, 2026Electrical, 18 Linden St, Jun 22, 2026Solar, 18 Linden St, Jun 18, 2026Alteration or repair, 20 Prospect Hill Ave, Jun 17, 2026Fence, wall or deck, 223 Washington St, Jun 16, 2026Electrical, 93 Newton St, Jun 15, 2026Electrical, 329 Somerville Ave, Jun 11, 2026Electrical, 21 Union Sq, Jun 9, 2026Electrical, 5 Homer Sq, Jun 9, 2026Alteration or repair, 33 Columbus Ave, Jun 9, 2026Plumbing, 26 Clark St, Jun 5, 2026Plumbing, 329 Somerville Ave, Jun 5, 2026Electrical, 17 Bonner Ave, Jun 2, 2026Alteration or repair, 1 Bow St, Jun 2, 2026Other, 20 Prospect Hill Ave, Jun 2, 2026Demolition, 37 Columbus Ave, Jun 1, 2026Plumbing, 17 Linden St, May 29, 2026Electrical, 40 Concord Ave, May 28, 2026Alteration or repair, 3 Linden St, May 21, 2026Electrical, 220 Washington St, May 19, 2026Electrical, 16 Homer Sq, May 19, 2026Alteration or repair, 18 Linden St, May 19, 2026Roofing, 35 Prospect St, May 19, 2026Alteration or repair, 3 Emerson St, May 13, 2026Alteration or repair, 19 Bow St, May 13, 2026Alteration or repair, 5 Homer Sq, May 13, 2026Solar, 23 Oak St, May 12, 2026Alteration or repair, 21 Linden St, May 7, 2026Electrical, 20 Prospect Hill Ave, May 6, 2026Roofing, 14 Linden St, May 5, 2026Plumbing, 24 Webster Ave, May 4, 2026Electrical, 205 Washington St, May 4, 2026Plumbing, 21 Union Sq, May 1, 2026New building, 15 Oak St, Oct 2, 2026New building, 15 Oak St, Sep 17, 2026New building, 24 Webster Ave, Sep 10, 2026New building, 17 Oak St, Aug 5, 2026New building, 17 Oak St, Jul 21, 2026New building, 26 Clark St, Jun 8, 2026New building, 300 Somerville Ave, May 6, 2026660 ft Map preview
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20 Prospect St

Somerville, MA 02143

The biggest project within a quarter mile since May 1: a $13M new building at 24 Webster Ave, permitted Sep 10.

One permit on record here. The newest, Aug 17: Installing 3 new breakrooms @ 50 Prospect St. Within a quarter mile, the city has issued 108 more permits (106 projects) since May 1. Seven are for new buildings, the nearest 420 ft away.

MayJunJulAugSepOct
Within
Since
Here1 permit · 20 Prospect St
  1. Installing 3 new breakrooms @ 50 Prospect St
    Plumbing
    Aug 17not listed
Sort
Next doorunder 250 ft · 4 permits
  1. Install: (2) New Face-Lit Channel Letters - "DUNKIN'" (1A.1).(1) Refurbished Ground Sign - "DUNKIN'" (3A.1)
    286 Somerville Ave · 180 ft NW · Sign
    Sep 30not listed
  2. Disconnect and reconnect front line wiring for newly added bookcase
    286 Somerville Ave · 180 ft NW · Electrical
    Sep 15$4,500
  3. Remove all roofing materials and install.060 EPDM rubber roofing materials
    35 Prospect St · 150 ft W · Roofing
    May 19$44,211
  4. Replace existing ducted AC
    3 Emerson St · 220 ft W · Alteration or repair
    May 13$14,250
This block250 to 1,000 ft · 51 permits · 2 new buildings, $12.8M
  1. Remove asbestos containing building materials
    40 Union Sq · 920 ft NW · Alteration or repair
    Oct 5$58,500
  2. Homeowner permit-- Replacing two rotted exterior doors and one severely window with cracked plexiglass in…
    34 Columbus Ave · 890 ft N · Alteration or repair
    Oct 2$5,000
  3. Underground piping, and finish plumbing
    26r Clark St · 870 ft W · Plumbing
    Sep 24not listed
  4. Replace stove
    69 Prospect St · 780 ft SW · Plumbing
    Sep 24not listed
  5. Remodel 1st floor kitchen and bath
    69 Prospect St · 780 ft SW · Plumbing
    Sep 23not listed
  6. Remodel kitchen on 1st and 2nd floor
    32 Stone Ave · 910 ft N · Alteration or repair
    Sep 22$87,000
  7. Renovation, 1st fl kitchen and 1 full bath
    32 Stone Ave · 910 ft N · Plumbing
    Sep 21not listed
  8. Renovation, 1st and 2nd fl kitchen stove
    32 Stone Ave · 910 ft N · Plumbing
    Sep 21not listed
  9. Rewire of kitchen and bath 1st floor unit
    69 Prospect St · 780 ft SW · Electrical
    Sep 17$7,800
  10. Demolition of existing 2 story house DEMO ON OR AFTER SEPTEMBER 22
    32 Webster Ave · 380 ft W · Demolition
    Sep 15$49,950
  11. Kitchen and bath remodel
    69 Prospect St · 780 ft SW · Alteration or repair
    Sep 12$72,500
  12. Construct a podium style 6 story building with a parking level below the building
    24 Webster Ave · 420 ft W · New building
    Sep 10$12,640,000
  13. Weatherization and air sealing with the Mass Save Program
    28 Bonner Ave · 880 ft N · Alteration or repair
    Sep 3$1,886
  14. Wiring for the commercial kitchen hood ventilation motors including power outlets
    230 Somerville Ave · 620 ft E · Electrical
    Sep 2$9,380
  15. (HOMEOWNER PERMIT) Replace 2 windows in back bedroom and Adding kitchen cabinets and new countertop
    22 Stone Ave · 860 ft N · Alteration or repair
    Aug 24$6,000
  16. 100 to 400 amp service Upgrade
    18 Columbus Ave · 750 ft NE · Electrical
    Aug 19$12,000
  17. 200 amp service for ADU
    26 Clark St · 870 ft W · Electrical
    Aug 13$7,000
  18. Interior demo of kitchen & bath
    69 Prospect St · 780 ft SW · Alteration or repair
    Aug 10$3,200
  19. Replace existing tub valve with new tub valve
    7 Joseph St · 850 ft W · Plumbing
    Aug 4not listed
  20. Bathroom Electrical WORK @ 259 WASHINGTON ST
    21 Union Sq · 870 ft NW · Electrical
    Jul 31$1,500
  21. Installing Bryant 24K BTU Outdoor Unit
    19b Stone Ave · 750 ft N · Electrical
    Jul 29$1,500
  22. Installing Bryant 36K BTU Outdoor Unit
    21 Stone Ave · 750 ft N · Electrical
    Jul 29$1,500
  23. @ 259 Washington st in existing commercial space
    21 Union Sq · 870 ft NW · Alteration or repair
    Jul 29$25,000
  24. Wire new construction ADU
    26 Clark St · 870 ft W · Electrical
    Jul 28$7,000
  25. Install new roofing
    15 Homer Sq · 700 ft N · Roofing
    Jul 25$14,600
  26. New construction of 43 units, common areas and parking garage which includes installation of underground for…
    24 Webster Ave · 420 ft W · Electrical
    Jul 20$1,425,000
  27. Temp Electrical Service Construction Site @ Corner of Allen St and Charlestown St
    9 Allen St · 280 ft E · Electrical
    Jul 15$500
  28. Installation of (10) Double Hung Window Inserts
    28 Bonner Ave · 880 ft N · Alteration or repair
    Jul 14$53,248
  29. Strip existing roofing (15 sq) layer with proper tools
    18 Linden St · 550 ft E · Roofing
    Jul 14$7,960
  30. Reroof: Tear off existing underlayment
    11 Linden St · 440 ft E · Roofing
    Jul 13$28,536
  31. Installation of underground conduits for new construction building with 43 units and generator
    24 Webster Ave · 420 ft W · Electrical
    Jul 6$21,000
  32. Rooftop solar 19 panels 7.79 kwdc 13.5kw energy storage system to be installed on exterior wall
    18 Linden St · 550 ft E · Electrical
    Jun 22$98,637
  33. Rooftop solar 19 panels 7.79 kwdc 13.5kw energy storage system to be installed on exterior wall no structural
    18 Linden St · 550 ft E · Solar
    Jun 18$38,950
  34. Temporary interior structure
    223 Washington St · 660 ft NE · Fence, wall or deck
    Jun 16$174,557
  35. Install pendant lights, ceiling fan
    21 Union Sq · 870 ft NW · Electrical
    Jun 9$6,500
  36. Support service for Siding company
    5 Homer Sq · 890 ft N · Electrical
    Jun 9$500
  37. Residential weatherization/air sealing
    33 Columbus Ave · 980 ft N · Alteration or repair
    Jun 9$2,000
  38. Backyard Cottage, foundation B25-000118
    26 Clark St · 870 ft W · New building
    Jun 8$197,500
  39. Entire plumbing on a newly built cottage CONTRACTOR REMOVED AS OF 9/15/26
    26 Clark St · 870 ft W · Plumbing
    Jun 5not listed
  40. Rooftop solar 12 panels 4.92 kwdc no ESS
    17 Bonner Ave · 760 ft N · Electrical
    Jun 2$8,768
  41. Gas meter test
    17 Linden St · 470 ft SE · Plumbing
    May 29not listed
  42. Adding 5 of 4in lally column with 2x2x1 concrete footing for additional structural support
    3 Linden St · 430 ft E · Alteration or repair
    May 21$3,000
  43. 120 volt wiring for gate control
    220 Washington St · 580 ft NE · Electrical
    May 19$10,000
  44. Electrical service upgrade from existing 100A to new 200A service
    16 Homer Sq · 700 ft N · Electrical
    May 19$4,800
  45. Insulation work as part of the MASS Save program
    18 Linden St · 550 ft E · Alteration or repair
    May 19$12,000
  46. Emergency roof and siding replacement
    5 Homer Sq · 890 ft N · Alteration or repair
    May 13$30,000
  47. Vinyl Siding, Install 3.5 inch trim around exterior around Garage Door
    21 Linden St · 500 ft SE · Alteration or repair
    May 7$105,287
  48. Asphalt shingles replacement on the entire house with Owens Corning System Warranty
    14 Linden St · 530 ft E · Roofing
    May 5$23,899
  49. Installation of various plumbing fixtures and piping at new multi residential building
    24 Webster Ave · 420 ft W · Plumbing
    May 4not listed
  50. They needed a permit pulled as they’re taking off window frames Siding permit
    205 Washington St · 780 ft NE · Electrical
    May 4$150
  51. Furnish and Install 1 new toilet and 1 new lavatory sink Juliet Social Club @ 257 Washington St
    21 Union Sq · 870 ft NW · Plumbing
    May 1not listed
Within a quarter mile1,000 ft to ¼ mi · 53 permits in 51 projects · 5 new buildings, $300,000
  1. Foundation Permit Back yard cottage PERMIT TO CONSTRUCT B26-001562
    15 Oak St · 0.22 mi SW · New building
    Oct 2$15,000
  2. Replace roof deck and railings on the third floor
    9 Sanborn Ave · 0.23 mi N · Alteration or repair
    Sep 29$17,825
  3. Reno of Bathrooms and Starbucks area in Target × 2 permits
    174 Somerville Ave · 0.24 mi SE · Plumbing
    Sep 24not listed
  4. Remove and replace 13 windows
    4 Lake St · 0.24 mi NW · Alteration or repair
    Sep 18$22,985
  5. Replaced boiler only with no water connection
    36 Mansfield St · 0.19 mi E · Plumbing
    Sep 17not listed
  6. Relocate gas line where interior door is being installed
    211 Tremont St · 0.22 mi S · Plumbing
    Sep 17not listed
  7. Strictly boiler only replacement no touching of water only Gas
    36 Mansfield St · 0.19 mi E · Plumbing
    Sep 17not listed
  8. Foundation Permit for 3 unit building PERMIT TO CONSTRUCT B26-001560
    15 Oak St · 0.22 mi SW · New building
    Sep 17$35,000
  9. Replace toilet, vanity, kitchen sink, dishwasher
    14 Boston St · 0.22 mi NE · Plumbing
    Sep 15not listed
  10. (REF this permit: B26-001063) Disconnect Electrical for demo and makesafe
    163 Washington St · 0.24 mi NE · Electrical
    Sep 15$3,000
  11. Install a new gas fire Furnace
    329 Somerville Ave · 0.24 mi NW · Plumbing
    Sep 10not listed
  12. Emergency Demolition,Remove partitions and drywall ceilings in basement @175-177 Washington St
    163 Washington St · 0.24 mi NE · Alteration or repair
    Sep 8$9,500
  13. Install Ufer grounding for cottage
    15 Oak St · 0.22 mi SW · Electrical
    Sep 3$200
  14. Install Ufer grounding for a three-family building
    15 Oak St · 0.22 mi SW · Electrical
    Sep 3$200
  15. Install ufer grounding for cottage
    17 Oak St · 0.22 mi SW · Electrical
    Sep 3$200
  16. NEW RUBBER ROOF - Strip and Install Labor and material: Rubber roofing Scope of work: - We will be a removing…
    9 Sanborn Ave · 0.23 mi N · Roofing
    Aug 27$7,200
  17. Install Energy Storage System rated at 27kWh outside
    44 Columbus Ave · 0.20 mi N · Solar
    Aug 27$21,675
  18. Target - Demolition scope for existing store remodel
    174 Somerville Ave · 0.24 mi SE · Demolition
    Aug 24$717,000
  19. Disconnect Shower & lav in basement
    163 Washington St · 0.24 mi NE · Plumbing
    Aug 19not listed
  20. Install Energy Storage System rated at 27kWh on exterior
    44 Columbus Ave · 0.20 mi N · Electrical
    Aug 17$15,249
  21. Remove (x3) existing gas fired boilers and replace with (x3) new ones
    290 Washington St · 0.23 mi W · Alteration or repair
    Aug 17$390,367
  22. Install Ufer grounding for a three-family building
    17 Oak St · 0.22 mi SW · Electrical
    Aug 6$200
  23. Associated electrical work and fire alarm with boiler replacement
    290 Washington St · 0.23 mi W · Electrical
    Aug 6$40,000
  24. Renovation kitchen and one bathroom
    14 Boston St · 0.22 mi NE · Electrical
    Aug 6$6,500
  25. Installing a new connection to combine Unit 11 and Unit 6 into a single dwelling unit by creating a new
    211 Tremont St · 0.22 mi S · Alteration or repair
    Aug 6$27,000
  26. Foundation Permit Back yard cottage PERMIT TO CONSTRUCT B26-001561
    17 Oak St · 0.22 mi SW · New building
    Aug 5$15,000
  27. Remove (x3) existing gas fired boilers and replace with (x3) new Lochinvar Condensing boilers × 2 permits
    290 Washington St · 0.23 mi W · Plumbing
    Aug 4not listed
  28. Remove old cabinets Remove floor tile Remove drop ceiling Open bigger window on wall between kitchen and…
    14 Boston St · 0.22 mi NE · Alteration or repair
    Aug 4$36,480
  29. Foundation Permit Principle triple decker structure PERMIT TOCONSTRUCT B26-001559
    17 Oak St · 0.22 mi SW · New building
    Jul 21$35,000
  30. Moving a sump pump discharge to a garden bed
    2 Tremont Pl · 0.23 mi S · Plumbing
    Jul 20$300
  31. Triple decker complete wiring
    10 Oak St · 0.21 mi SW · Electrical
    Jul 13$30,000
  32. Replace Garage rubber roof
    24 Warren Ave · 0.22 mi N · Alteration or repair
    Jul 8$4,800
  33. Replacing recessed light in unit 12 and 21 due to water damage from weather heater in unit 34
    17 Bow St · 0.22 mi NW · Electrical
    Jul 7$2,000
  34. Roof Recover
    285 Washington St · 0.23 mi W · Roofing
    Jul 7$39,693
  35. Add 6x circuits and 15x Receptacles in the electronic area gandolas
    174 Somerville Ave · 0.24 mi SE · Electrical
    Jul 6$7,300
  36. Electrical demo of vacant retail space
    174 Somerville Ave · 0.24 mi SE · Electrical
    Jul 3$15,000
  37. Install 1 kitchen door tempered and 1 front entry door for replacement
    7 Oak St · 0.20 mi SW · Alteration or repair
    Jun 30$19,969
  38. Installation of central heating and cooling with gas furnace and ac
    329 Somerville Ave · 0.24 mi NW · Mechanical (HVAC)
    Jun 24$15,000
  39. Move exsisting smokes, pull stations and horns out to accommodate new framing
    329 Somerville Ave · 0.24 mi NW · Electrical
    Jun 23$500
  40. Air sealing and insulation through the Mass Save program
    20 Prospect Hill Ave · 0.23 mi NE · Alteration or repair
    Jun 17$1,213
  41. Basement two main area rooms, nearest base of stairs
    93 Newton St · 0.20 mi SW · Electrical
    Jun 15$5,000
  42. Wire room for lights power and heat B26-000400
    329 Somerville Ave · 0.24 mi NW · Electrical
    Jun 11$25,000
  43. Remodel a existing Liquor store
    329 Somerville Ave · 0.24 mi NW · Plumbing
    Jun 5not listed
  44. Rebuilding a brick wall that is in bad condition at left side rear of building Install all the necessary…
    1 Bow St · 0.21 mi NW · Alteration or repair
    Jun 2$173,550
  45. Install two condensers and four mini split heads
    20 Prospect Hill Ave · 0.23 mi NE · Other
    Jun 2$27,632
  46. Demolish existing three-story wood deck and construct new three-story pressure-treated wood deck in same…
    37 Columbus Ave · 0.20 mi N · Demolition
    Jun 1$27,000
  47. Wire 3 laundry, update service from 100A to 400A
    40 Concord Ave · 0.23 mi SW · Electrical
    May 28$11,025
  48. Service Package - EPDM Repairs Parapet wall roof improvement - Install new 1/4" Tapered insulation (diverting…
    19 Bow St · 0.25 mi NW · Alteration or repair
    May 13$8,152
  49. Rooftop solar installation 18 panels 7.92 kw dc
    23 Oak St · 0.24 mi SW · Solar
    May 12$39,600
  50. Installation and wiring of ductless system consisting of two condensers and four mini-split heads
    20 Prospect Hill Ave · 0.23 mi NE · Electrical
    May 6$6,908
  51. Buildout restaurant @ 302 Somerville Ave
    300 Somerville Ave · 0.19 mi NW · New building
    May 6$200,000
More on this streetProspect St · 10 nearest addresses with permits

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Somerville Inspectional Services Division updated its data Oct 6, 2026. We checked it Oct 6, 22:13 UTC. See the city's official records (SomerStat, City of Somerville, ODbL 1.0).

Contains information from Applications for Permits and Licenses (SomerStat, City of Somerville), which is made available here under the Open Database License (ODbL).

At this address: every permit the city holds. Nearby: permits from the last two years, from our copy of the city's data.

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