Nearby Permits
Map of 131 permits within a quarter mile of 21 Walnut StElectrical, 8 Pleasant Ave, Oct 5, 2026Alteration or repair, 40 Union Sq, Oct 5, 2026Alteration or repair, 34 Columbus Ave, Oct 2, 2026Electrical, 42 Vinal Ave, Oct 1, 2026Sign, 286 Somerville Ave, Sep 30, 2026Electrical, 8 Highland Ave, Sep 29, 2026Electrical, 26 Summer St, Sep 29, 2026Alteration or repair, 24 Wesley Park, Sep 29, 2026Alteration or repair, 24 Summer St, Sep 29, 2026Alteration or repair, 9 Sanborn Ave, Sep 29, 2026Mechanical (HVAC), 33 Vinal Ave, Sep 24, 2026Other, 33 Vinal Ave, Sep 24, 2026Alteration or repair, 44 Highland Ave, Sep 23, 2026Alteration or repair, 32 Stone Ave, Sep 22, 2026Alteration or repair, 28 Summer St, Sep 22, 2026Plumbing, 32 Stone Ave, Sep 21, 2026Plumbing, 32 Stone Ave, Sep 21, 2026Alteration or repair, 4 Lake St, Sep 18, 2026Alteration or repair, 397 Somerville Ave, Sep 17, 2026Electrical, 286 Somerville Ave, Sep 15, 2026Plumbing, 329 Somerville Ave, Sep 10, 2026Alteration or repair, 28 Bonner Ave, Sep 3, 2026Plumbing, 30 Summit Ave, Sep 2, 2026Electrical, 26 Vinal Ave, Aug 28, 2026Roofing, 9 Sanborn Ave, Aug 27, 2026Electrical, 9 Prospect Hill Ave, Aug 27, 2026Solar, 44 Columbus Ave, Aug 27, 2026Electrical, 33 Vinal Ave, Aug 25, 2026Alteration or repair, 67 Boston St, Aug 24, 2026Alteration or repair, 22 Stone Ave, Aug 24, 2026Plumbing, 17 Carlton St, Aug 20, 2026Electrical, 18 Columbus Ave, Aug 19, 2026Alteration or repair, 42 Vinal Ave, Aug 19, 2026Electrical, 9 Prospect Hill Ave, Aug 18, 2026Electrical, 44 Columbus Ave, Aug 17, 2026Alteration or repair, 290 Washington St, Aug 17, 2026Alteration or repair, 6 Giles Park, Aug 16, 2026Alteration or repair, 67 Walnut St, Aug 14, 2026Electrical, 42 Vinal Ave, Aug 12, 2026Electrical, 17 Carlton St, Aug 10, 2026Plumbing, 32 Hamlet St, Aug 7, 2026Plumbing, 32 Hamlet St, Aug 7, 2026Plumbing, 59 Bow St, Aug 6, 2026Electrical, 290 Washington St, Aug 6, 2026Alteration or repair, 14 Carlton St, Aug 5, 2026Alteration or repair, 17 Carlton St, Aug 5, 2026Plumbing, 290 Washington St, Aug 4, 2026Plumbing, 9 Prospect Hill Ave, Aug 4, 2026Plumbing, 290 Washington St, Aug 4, 2026Alteration or repair, 30 Walnut St, Aug 3, 2026Electrical, 9 Prospect Hill Ave, Jul 31, 2026Electrical, 21 Union Sq, Jul 31, 2026Electrical, 19b Stone Ave, Jul 29, 2026Electrical, 21 Stone Ave, Jul 29, 2026Roofing, 15 Grand View Ave, Jul 29, 2026Alteration or repair, 21 Union Sq, Jul 29, 2026Electrical, 21 Vinal Ave, Jul 28, 2026Electrical, 40 Highland Ave, Jul 28, 2026Mechanical (HVAC), 30 Walnut St, Jul 27, 2026Electrical, 30 Walnut St, Jul 27, 2026Roofing, 15 Homer Sq, Jul 25, 2026Electrical, 24 Aldersey St, Jul 24, 2026Plumbing, 6 Highland Ave, Jul 22, 2026Plumbing, 8 Pleasant Ave, Jul 21, 2026Plumbing, 8 Pleasant Ave, Jul 21, 2026Roofing, 3 Lawson Terr, Jul 21, 2026Electrical, 24 Webster Ave, Jul 20, 2026Alteration or repair, 21 Vinal Ave, Jul 16, 2026Alteration or repair, 28 Bonner Ave, Jul 14, 2026Alteration or repair, 17 Bow St Pl, Jul 8, 2026Alteration or repair, 24 Warren Ave, Jul 8, 2026Electrical, 32 Hamlet St, Jul 7, 2026Electrical, 29 Summit Ave, Jul 7, 2026Electrical, 17 Bow St, Jul 7, 2026Roofing, 285 Washington St, Jul 7, 2026Electrical, 24 Webster Ave, Jul 6, 2026Plumbing, 29 Summit Ave, Jul 2, 2026Electrical, 17 Aldersey St, Jun 30, 2026Electrical, 9 Carlton St, Jun 29, 2026Roofing, 23 Putnam St, Jun 29, 2026Mechanical (HVAC), 329 Somerville Ave, Jun 24, 2026Alteration or repair, 30 Walnut St, Jun 24, 2026Electrical, 49 Putnam St, Jun 23, 2026Electrical, 329 Somerville Ave, Jun 23, 2026Alteration or repair, 32 Hamlet St, Jun 23, 2026Electrical, 43 Boston St, Jun 22, 2026Electrical, 397 Somerville Ave, Jun 21, 2026Alteration or repair, 20 Prospect Hill Ave, Jun 17, 2026Plumbing, 397 Somerville Ave, Jun 16, 2026Alteration or repair, 29 Summit Ave, Jun 16, 2026Fence, wall or deck, 223 Washington St, Jun 16, 2026Alteration or repair, 19r Prospect Hill Ave, Jun 16, 2026Electrical, 397 Somerville Ave, Jun 11, 2026Electrical, 329 Somerville Ave, Jun 11, 2026Alteration or repair, 9 Prospect Hill Ave, Jun 11, 2026Electrical, 55 Putnam St, Jun 10, 2026Alteration or repair, 4 Putnam St, Jun 10, 2026Electrical, 21 Union Sq, Jun 9, 2026Electrical, 5 Homer Sq, Jun 9, 2026Alteration or repair, 33 Columbus Ave, Jun 9, 2026Mechanical (HVAC), 43 Boston St, Jun 8, 2026Plumbing, 34 Putnam St, Jun 5, 2026Plumbing, 329 Somerville Ave, Jun 5, 2026Plumbing, 4 Putnam St, Jun 5, 2026Alteration or repair, 16 Summit Ave, Jun 5, 2026Electrical, 17 Bonner Ave, Jun 2, 2026Alteration or repair, 26 Summer St, Jun 2, 2026Alteration or repair, 1 Bow St, Jun 2, 2026Other, 20 Prospect Hill Ave, Jun 2, 2026Demolition, 37 Columbus Ave, Jun 1, 2026Plumbing, 30 Walnut St, May 29, 2026Roofing, 22 Thorpe St, May 20, 2026Electrical, 9 Hillside Park, May 19, 2026Electrical, 16 Homer Sq, May 19, 2026Alteration or repair, 24 Summer St, May 19, 2026Alteration or repair, 9 Hillside Park, May 19, 2026Electrical, 12 Putnam St, May 14, 2026Electrical, 12 Putnam St, May 14, 2026Electrical, 30 Walnut St, May 13, 2026Alteration or repair, 3 Emerson St, May 13, 2026Alteration or repair, 19 Bow St, May 13, 2026Alteration or repair, 5 Homer Sq, May 13, 2026Electrical, 1 Bow Market Way, May 12, 2026Electrical, 24 Thorpe St, May 7, 2026Electrical, 20 Prospect Hill Ave, May 6, 2026Plumbing, 24 Webster Ave, May 4, 2026Electrical, 33 Bow St, May 4, 2026Plumbing, 21 Union Sq, May 1, 2026Alteration or repair, 34 Putnam St, May 1, 2026New building, 24 Webster Ave, Sep 10, 2026New building, 300 Somerville Ave, May 6, 2026660 ft Map preview
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21 Walnut 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.

Six permits on record here. The newest, Mar 2: Install Rinnai Gas Boiler and 40 Gallon Gas Hot Water Heater in the Basement. Within a quarter mile, the city has issued 131 more permits (129 projects) since May 1. Two are for new buildings, the nearest 770 ft away.

MayJunJulAugSepOct
Here6 permits · 21 Walnut St
  1. Mar 2not listed
  2. Feb 11$850
  3. Jul 22, 2022$2,000
  4. Wire up attic
    Electrical
    Jun 21, 2019$3,000
  5. Feb 25, 2019$33,000
Next doorunder 250 ft · 8 permits
  1. Sep 29$17,825
  2. Aug 27$7,200
  3. Mass Save Weatherization/Insulation
    30 Walnut St · 220 ft N · Alteration or repair
    Aug 3$15,254
  4. Jul 27$58,000
  5. Jul 27$4,000
  6. Whole Home Project: Electrical
    30 Walnut St · 220 ft N · Alteration or repair
    Jun 24$168,760
  7. May 29not listed
  8. May 13$50,000
This block250 to 1,000 ft · 80 permits · 1 new building, $200,000
  1. Oct 5$2,500
  2. Oct 5$58,500
  3. Oct 2$5,000
  4. Oct 1$2,000
  5. Sep 29$28,500
  6. Install 1 replacement window
    24 Wesley Park · 450 ft NW · Alteration or repair
    Sep 29$2,763
  7. Sep 29$2,700
  8. Sep 24$25,000
  9. Sep 24$25,000
  10. Remodel kitchen on 1st and 2nd floor
    32 Stone Ave · 500 ft SE · Alteration or repair
    Sep 22$87,000
  11. Basement sill and crawlspace insulation
    28 Summer St · 790 ft W · Alteration or repair
    Sep 22$1,238
  12. Sep 21not listed
  13. Sep 21not listed
  14. Remove and replace 13 windows
    4 Lake St · 990 ft SW · Alteration or repair
    Sep 18$22,985
  15. Sep 10not listed
  16. Sep 3$1,886
  17. Sep 2not listed
  18. Basement remodel
    26 Vinal Ave · 730 ft NW · Electrical
    Aug 28$7,500
  19. Aug 27$21,675
  20. 6 new family
    33 Vinal Ave · 730 ft N · Electrical
    Aug 25$82,000
  21. Aug 24$18,350
  22. Aug 24$6,000
  23. Install 5.74 kW panels
    42 Vinal Ave · 1,000 ft N · Alteration or repair
    Aug 19$28,700
  24. Aug 17$15,249
  25. Aug 16$14,422
  26. Install 7 replacement windows
    67 Walnut St · 960 ft NE · Alteration or repair
    Aug 14$22,521
  27. Install 5.74 kW panels
    42 Vinal Ave · 1,000 ft N · Electrical
    Aug 12$29,000
  28. Aug 7not listed
  29. Install New Gas Stove
    32 Hamlet St · 990 ft NE · Plumbing
    Aug 7not listed
  30. Aug 6not listed
  31. Jul 31$1,500
  32. Jul 29$1,500
  33. Jul 29$1,500
  34. Jul 29$25,000
  35. Jul 28$1,600
  36. Install new roofing
    15 Homer Sq · 780 ft SE · Roofing
    Jul 25$14,600
  37. Jul 24$3,000
  38. Jul 21not listed
  39. Gas stove
    8 Pleasant Ave · 830 ft N · Plumbing
    Jul 21not listed
  40. Jul 21$16,640
  41. (HOMEOWNER PERMIT) Add one interior wall
    21 Vinal Ave · 550 ft NW · Alteration or repair
    Jul 16$17,650
  42. Jul 14$53,248
  43. Jul 8$2,000
  44. Replace Garage rubber roof
    24 Warren Ave · 260 ft SE · Alteration or repair
    Jul 8$4,800
  45. Second floor remodel
    32 Hamlet St · 990 ft NE · Electrical
    Jul 7$18,000
  46. Jul 7$1,500
  47. Jul 7$2,000
  48. Jul 2not listed
  49. Jun 30$30,000
  50. Jun 29$24,460
  51. Jun 24$15,000
  52. Jun 23$500
  53. Jun 23$84,975
  54. Jun 16$18,600
  55. Jun 11$25,000
  56. Jun 10$28,900
  57. Jun 9$6,500
  58. Jun 9$500
  59. Residential weatherization/air sealing
    33 Columbus Ave · 790 ft SE · Alteration or repair
    Jun 9$2,000
  60. Jun 5not listed
  61. Bathroom remodel
    4 Putnam St · 920 ft NW · Plumbing
    Jun 5not listed
  62. Minor renovation to the interior only
    16 Summit Ave · 610 ft N · Alteration or repair
    Jun 5$92,000
  63. Jun 2$8,768
  64. Interior demolition
    26 Summer St · 760 ft W · Alteration or repair
    Jun 2$50,000
  65. Jun 2$173,550
  66. Jun 1$27,000
  67. May 20$21,858
  68. May 19$65,000
  69. May 19$4,800
  70. May 19$7,500
  71. May 19$415,000
  72. May 14$2,000
  73. May 14$2,000
  74. May 13$8,152
  75. Emergency roof and siding replacement
    5 Homer Sq · 630 ft SE · Alteration or repair
    May 13$30,000
  76. Install fire radio
    1 Bow Market Way · 590 ft SW · Electrical
    May 12$594
  77. May 7$2,500
  78. May 6$200,000
  79. May 4$3,000
  80. May 1not listed
Within a quarter mile1,000 ft to ¼ mi · 43 permits in 41 projects · 1 new building, $12.6M
  1. Sep 30not listed
  2. Sep 29$250
  3. Sep 23$6,992
  4. Sep 17$2,500
  5. Sep 15$4,500
  6. Sep 10$12,640,000
  7. Aug 18 to 27$27,166
  8. Aug 20not listed
  9. Aug 19$12,000
  10. Aug 17$390,367
  11. Aug 10$1,200
  12. Aug 6$40,000
  13. Aug 5$21,900
  14. Aug 5$700,000
  15. Aug 4not listed
  16. Aug 4not listed
  17. Jul 31$5,600
  18. Jul 29$12,350
  19. Jul 28$1,322
  20. Cap dryer gas
    6 Highland Ave · 0.24 mi NE · Plumbing
    Jul 22not listed
  21. Jul 20$1,425,000
  22. Roof Recover
    285 Washington St · 0.20 mi SW · Roofing
    Jul 7$39,693
  23. Jul 6$21,000
  24. Jun 29$6,500
  25. Jun 23$900
  26. Jun 22$8,000
  27. Jun 21$800
  28. Jun 17$1,213
  29. Jun 16not listed
  30. Temporary interior structure
    223 Washington St · 0.23 mi SE · Fence, wall or deck
    Jun 16$174,557
  31. Jun 16$2,400
  32. Jun 11$800
  33. Jun 11$40,000
  34. 400A service upgrade
    55 Putnam St · 0.23 mi N · Electrical
    Jun 10$3,000
  35. Install 3 HVAC systems
    43 Boston St · 0.22 mi E · Mechanical (HVAC)
    Jun 8$49,000
  36. 1/2 bathroom on 2nd floor
    34 Putnam St · 0.21 mi NW · Plumbing
    Jun 5not listed
  37. Jun 2$27,632
  38. Replace existing ducted AC
    3 Emerson St · 0.24 mi S · Alteration or repair
    May 13$14,250
  39. May 6$6,908
  40. May 4not listed
  41. May 1$8,000
More on this streetWalnut 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, 19:08 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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