Boston Home Additions Costs & Prices
Boston, Massachusetts. The Boston Home Additions Cost Report is a concise report on everything you need to know about the cost of home additions in the Boston area.
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Average Home Additions Cost in Boston
We have done a little research to find the average cost of home additions in Boston. Here are the average costs and prices reported back to us:
Cost of Building a Home Addition in Boston, Massachusetts$145.28 per square foot for standard grade construction (Range: $112.25 - $178.31) Free Estimates from Local ProsCost of Building a Garage Addition in Boston, Massachusetts$52.83 per square foot (custom designed, standard grade) (Range: $46.22 - $59.43) Free Estimates from Local ProsCost of Building a Sunroom in Boston, Massachusetts$133.07 per square foot (three-season room) (Range: $109.35 - $156.79) Free Estimates from Local ProsCost of Dormer Addition in Boston, Massachusetts$4,126.88 for single-window gable dormer (Range: $3,908.98 - $4,344.77) Free Estimates from Local ProsCost of Building a Closet in Boston, Massachusetts$1,987.64 for standard bedroom closet (4 ft reach-in) (Range: $1,897.86 - $2,077.41) Free Estimates from Local Pros |
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Boston Home Additions Cost Data
Professionals in the Boston area have provided information about how much home additions cost(s). Here are some of the individual reports:
02205, Boston, Massachusetts - January 18, 2023
Building a Closet$1,908.66 - $2,089.23 for standard bedroom closet (4 ft reach-in)
Cost includes labor. Includes wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Does not account for built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
02205, Boston, Massachusetts - November 14, 2022
Building a Sunroom$109.98 - $157.68 per square foot (three-season room)
The cost of sunroom construction is included in the estimate. Price takes into account building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Items excluded: insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
02205, Boston, Massachusetts - December 10, 2021
Building a Home Addition$112.63 - $178.90 per square foot for standard grade construction
Price includes labor. No additional charge for permits, builders grade materials, demolition, cleanup and disposal. Cost estimate excludes high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
02205, Boston, Massachusetts - May 16, 2021
Building a Garage Addition$46.38 - $59.63 per square foot (custom designed, standard grade)
Includes price of labor for building a garage addition. Includes standard grade materials and debris removal. Cost excludes design drawings.
Reported by:
ProMatcher Research Team |
02205, Boston, Massachusetts - October 29, 2020
Dormer Addition$3,922.00 - $4,359.25 for single-window gable dormer
Labor is included in this dormer addition construction price quote. Includes cutting into an existing roof, framing structure, installing window, re-roofing, and re-siding. Cost does not account for larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations.
Reported by:
ProMatcher Research Team |
01702, Framingham, Massachusetts - January 18, 2023
Building a Closet$1,937.47 - $2,120.77 for standard bedroom closet (4 ft reach-in)
Includes the cost of closet installation labor. Price accounts for demolition, framing, drywall, and finishing for reach-in closet (48" wide and 28" deep). Items excluded: built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
02169, Quincy, Massachusetts - January 18, 2023
Building a Closet$1,900.02 - $2,079.77 for standard bedroom closet (4 ft reach-in)
This is the typical price range for closet installation. Generally, this includes framing walls and hanging drywall to add a closet to an existing room (4 ft wide). There may be an additional cost for larger sized closets, custom shelving construction, high-end closet organization systems, and cabinetry.
Reported by:
ProMatcher Research Team |
02453, Waltham, Massachusetts - January 18, 2023
Building a Closet$1,887.06 - $2,065.58 for standard bedroom closet (4 ft reach-in)
This is how much closet installation generally costs. These items come standard: framing walls and hanging drywall to add a closet to an existing room (4 ft wide). There will be an extra fee for larger sized closets, custom shelving construction, high-end closet organization systems, and cabinetry.
Reported by:
ProMatcher Research Team |
02458, Newton, Massachusetts - January 18, 2023
Building a Closet$1,884.17 - $2,062.43 for standard bedroom closet (4 ft reach-in)
This is the approximate cost for closet building. This would account for framing walls and hanging drywall to add a closet to an existing room (4 ft wide). It does not normally include built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
02139, Cambridge, Massachusetts - January 18, 2023
Building a Closet$1,878.41 - $2,056.12 for standard bedroom closet (4 ft reach-in)
Cost takes into account the price of closet installation. No additional charge for wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Price does not account for built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
01760, Natick, Massachusetts - January 18, 2023
Building a Closet$1,937.47 - $2,120.77 for standard bedroom closet (4 ft reach-in)
Estimate for closet installation is included. No additional charge for wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Cost does not take into account built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
01853, Lowell, Massachusetts - January 18, 2023
Building a Closet$1,849.60 - $2,024.59 for standard bedroom closet (4 ft reach-in)
Cost estimate includes closet installation. Price does include wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Items excluded: built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
02453, Waltham, Massachusetts - November 14, 2022
Building a Sunroom$108.73 - $155.89 per square foot (three-season room)
This is the average price range for sunroom construction. Almost all quotes include building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Prices may be higher for insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
02458, Newton, Massachusetts - November 14, 2022
Building a Sunroom$108.56 - $155.65 per square foot (three-season room)
This is the typical price range for sunroom installation. Generally, this includes building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. These items are considered extra: insulating materials, heating and air conditioning work, and permitting .
Reported by:
ProMatcher Research Team |
01702, Framingham, Massachusetts - November 14, 2022
Building a Sunroom$111.64 - $160.06 per square foot (three-season room)
Cost estimate considers the price of sunroom construction. Price accounts for standard three-season room addition with builder-grade materials (windows, siding, and roofing) and standard electrical work. Does not include insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
02139, Cambridge, Massachusetts - November 14, 2022
Building a Sunroom$108.23 - $155.18 per square foot (three-season room)
Labor for sunroom construction is included in the cost. Does include building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Price excludes insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
01760, Natick, Massachusetts - November 14, 2022
Building a Sunroom$111.64 - $160.06 per square foot (three-season room)
Estimated quote includes sunroom construction. Also includes building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Cost does not take into account insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
02169, Quincy, Massachusetts - November 14, 2022
Building a Sunroom$109.48 - $156.96 per square foot (three-season room)
Mutliple factors determine the cost of sunroom construction. This rough estimate includes building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. These items will cost extra: insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
01853, Lowell, Massachusetts - November 14, 2022
Building a Sunroom$106.57 - $152.80 per square foot (three-season room)
Cost assumes a typical sunroom construction. Estimate accounts for building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Price does not account for insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
01702, Framingham, Massachusetts - December 10, 2021
Building a Home Addition$114.33 - $181.60 per square foot for standard grade construction
Labor is included home addition construction price. Also includes standard grade materials, demo, building permits, and construction cleanup. Cost does not include high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
01760, Natick, Massachusetts - December 10, 2021
Building a Home Addition$114.33 - $181.60 per square foot for standard grade construction
Includes manhours for building a home addition. Cost takes into account standard materials (windows, siding, roofing, electrical, fixtures), construction permits, and waste removal. Additional charge for construction drawings, premium finishes, and deep foundations.
Reported by:
ProMatcher Research Team |
02139, Cambridge, Massachusetts - December 10, 2021
Building a Home Addition$110.84 - $176.07 per square foot for standard grade construction
Includes the price of home addition construction. Cost accounts for permits, builders grade materials, demolition, cleanup and disposal. Does not include high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
01853, Lowell, Massachusetts - December 10, 2021
Building a Home Addition$109.14 - $173.37 per square foot for standard grade construction
Price takes into account labor. It also includes permits, builders grade materials, demolition, cleanup and disposal. Does not include high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
01853, Lowell, Massachusetts - May 16, 2021
Building a Garage Addition$44.94 - $57.78 per square foot (custom designed, standard grade)
This is an estimated price for building a garage addition. Also includes standard grade materials and debris removal. Cost does not include design drawings.
Reported by:
ProMatcher Research Team |
01702, Framingham, Massachusetts - May 16, 2021
Building a Garage Addition$47.07 - $60.52 per square foot (custom designed, standard grade)
Includes the price of building a garage addition. Cost accounts for standard materials and waste removal. Does not include design drawings.
Reported by:
ProMatcher Research Team |
01760, Natick, Massachusetts - May 16, 2021
Building a Garage Addition$47.07 - $60.52 per square foot (custom designed, standard grade)
Cost includes labor for garage construction. Also includes standard materials and project cleanup. Items not included: blueprint preparation.
Reported by:
ProMatcher Research Team |
02139, Cambridge, Massachusetts - May 16, 2021
Building a Garage Addition$45.64 - $58.68 per square foot (custom designed, standard grade)
Price quote accounts for the cost of building a garage addition. Estimate takes into account standard grade materials and debris removal. It excludes design drawings.
Reported by:
ProMatcher Research Team |
01801, Woburn, Massachusetts - March 28, 2021
Building a Home Addition$180.00 to $250.00 per square foot for premium grade construction
$120.00 to $200.00 per square foot for standard grade construction
Contract, T&M
Reported by:
Andrew Magera, Modern Edge Contracting LLC |
02139, Cambridge, Massachusetts - October 29, 2020
Dormer Addition$3,859.84 - $4,290.16 for single-window gable dormer
Estimate takes into account labor. It also includes cutting into an existing roof, framing structure, installing window, re-roofing, and re-siding. Cost estimate excludes larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations.
Reported by:
ProMatcher Research Team |
01702, Framingham, Massachusetts - October 29, 2020
Dormer Addition$3,981.20 - $4,425.05 for single-window gable dormer
This estimated price includes dormer addition construction labor. Cost accounts for framing, roofing, and finishing a gable dormer with a single window. Does not include larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations.
Reported by:
ProMatcher Research Team |
01853, Lowell, Massachusetts - October 29, 2020
Dormer Addition$3,800.64 - $4,224.36 for single-window gable dormer
Estimate accounts for the cost of window dormer installation. Price includes standard-grade materials and supplies to build gable dormer with one average-sized window. Items not included: room-size additions, permits, interior finishes, hip roof dormers, shed dormers, home electrical wiring, or plumbing, .
Reported by:
ProMatcher Research Team |
01760, Natick, Massachusetts - October 29, 2020
Dormer Addition$3,981.20 - $4,425.05 for single-window gable dormer
Cost estimate considers the price of window dormer installation. Price accounts for standard-grade materials and supplies to build gable dormer with one average-sized window. Does not include room-size additions, permits, interior finishes, hip roof dormers, shed dormers, home electrical wiring, or plumbing, .
Reported by:
ProMatcher Research Team |
01464, Shirley, Massachusetts - July 23, 2019
Building a Home Addition$175.00 to $250.00 per square foot for premium grade construction
$135.00 to $175.00 per square foot for standard grade construction
Depending on the size of the project, we set up a payment schedule
Reported by:
Fran Dolan, A&K Remodeling |
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Boston Home Addition Contractors
Modern Edge Contracting LLC827 Main St, Woburn, MA 617-939-9396
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A&K Remodeling92 Squannacook Road, Shirley, MA 978-660-3529
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DC Construction Services Inc.
Crescent Street, Franklin, MA
774-571-3615
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