Contractors / Portsmouth, NH / Building

Building contractors in Portsmouth, NH

Real permit activity. Real contractors. Ranked by volume.

257 building permits were filed in Portsmouth in the last 6 months. These 45 contractors filed them most often. Tap a name for their full permit history.

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  1. 1River Birch Builders3 in last 90 days6
  2. 2Two International Construction Company, Inc.4 in last 90 days5
  3. 2Open Concepts Contracting2 in last 90 days5
  4. 2The Kane Company2 in last 90 days5
  5. 5CBC Construction Inc.4 in last 90 days4
  6. 5Chinburg Builders, Inc.2 in last 90 days4
  7. 5Callahan Construction Managersnone in last 90 days4
  8. 8Servpro of the Seacoast3 in last 90 days3
  9. 8Peak Event Services2 in last 90 days3
  10. 8Dignan Construction LLC1 in last 90 days3
  11. 8Malthouse Construction1 in last 90 days3
  12. 12Becksted Associates2 in last 90 days2
  13. 12Diamond Hill Builders LLC2 in last 90 days2
  14. 12Driftwood Builders LLC2 in last 90 days2
  15. 12Jay Prewitt Builder Inc.2 in last 90 days2
  16. 12Kelsey Mill Construction2 in last 90 days2
  17. 12Procon Llc2 in last 90 days2
  18. 12RT McNabb, LLC2 in last 90 days2
  19. 12Salem Manufactured Homes2 in last 90 days2
  20. 12Servpro2 in last 90 days2
  21. 12Alden Builders1 in last 90 days2
  22. 12Degco Building Company Llc1 in last 90 days2
  23. 12Dockham Builders1 in last 90 days2
  24. 12Halsey Builders, LLC1 in last 90 days2
  25. 12Meridian Construction Corporation1 in last 90 days2
  26. 12No1 in last 90 days2
  27. 12Revise1 in last 90 days2
  28. 12Eckman Constructionnone in last 90 days2
  29. 12Greenier Builders, Inc.none in last 90 days2
  30. 12Marone Building Companynone in last 90 days2
  31. 12White’s Rentalsnone in last 90 days2
  32. 32Back Channel Consulting LLC1 in last 90 days1
  33. 32Fox Construction, LLC1 in last 90 days1
  34. 32Gordon Design Build1 in last 90 days1
  35. 32Insurcomm1 in last 90 days1
  36. 32Little Harbour Builders1 in last 90 days1
  37. 32Madeira Custom Builders1 in last 90 days1
  38. 32Master Elite Installers LLC1 in last 90 days1
  39. 32Nick Gray Builders,LLC1 in last 90 days1
  40. 32RW Dake Construction1 in last 90 days1
  41. 32Sullivan Construction1 in last 90 days1
  42. 32Allan Trant's Exterior Finish Work LLCnone in last 90 days1
  43. 32Depronone in last 90 days1
  44. 32Gray Constructionnone in last 90 days1
  45. 32Reeds Ferry Shedsnone in last 90 days1

Recent building permits in Portsmouth

  1. Nov 10, 2026Interior renovation of the existing Gas Control Room (Room 120) in an occupied business office. The use stays the same, Procon Llc · Residential · 1 · #BLDG-26-853
  2. Nov 4, 2026Bathroom renovation. Remove tub and install shower. New Vanity toilet and flooring. New DoorLittle Harbour Builders · Residential · 1 · #BLDG-26-843
  3. Nov 4, 2026135-square-foot gable dormer additionDiamond Hill Builders LLC · Residential · 1 · #BLDG-26-839
  4. Nov 3, 2026Residential weatherization (Mass Save/NH HEP energy efficiency work): insulate 114 sq ft of rim joist with 2in fire-rateRevise · Residential · 1 · #BLDG-26-838
  5. Nov 3, 2026Residential Renovation: Replace Deck and Stairs at 164 Codfish Corner, (Hillcrest Estates, 3205 Lafayette Road) Project Salem Manufactured Homes · Residential · 1 · #BLDG-26-836
  6. Nov 2, 2026Prepatory and support work for modernization of existing elevator and machine room.RW Dake Construction · Residential · 1 · #BLDG-26-834
  7. Nov 2, 2026Build a new restaurant on the basement and ground level per plans submitted. Two upper apartments to be renovated per plDegco Building Company Llc · Residential · 1 · #BLDG-26-835
  8. Oct 30, 2026Demo two existing bathrooms to combine into one larger Master Bath. New ceramic tile floor, solid surface stall shower, Dignan Construction LLC · Residential · 1 · #BLDG-26-825
  9. Oct 28, 2026Swapping the existing exterior kitchen door no structure involvedMaster Elite Installers LLC · Residential · 1 · #BLDG-26-820
  10. Oct 28, 2026Firestopping and smoke stopping of the existing mechanical room. Made the laundry area 100sf or less.CBC Construction Inc. · Residential · 1 · #BLDG-26-817

How building compares in Portsmouth

Other trades in Portsmouth

Electricians 495HVAC contractors 353Plumbers 233Site work contractors 131Roofing contractors 118Gas fitters 87Window & door contractors 40Deck & porch builders 25Insulation contractors 21

Building contractors nearby

Boston 2999Worcester 2210Pittsfield 1243Stoughton 718Plymouth 621Warwick 618Lowell 555Reading 528

Get quotes from active building contractors in Portsmouth

Request a quote and we route it to contractors with documented permits here. No ratings invented — you see their permit history first.

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Source: Portsmouth OpenGov. Data updated Nov 13, 2026. A permit shows a job was filed with the town. It doesn’t show whether the work was finished or how it turned out. Rankings are by permit volume.