San Francisco Home Additions Costs & Prices
San Francisco, California. The San Francisco Home Additions Cost Report is a concise report on everything you need to know about the cost of home additions in the San Francisco area.
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Average Home Additions Cost in San Francisco
We have done a little research to find the average cost of home additions in San Francisco. Here are the average costs and prices reported back to us:
Cost of Building a Home Addition in San Francisco, California$150.38 per square foot for standard grade construction (Range: $116.19 - $184.56) Free Estimates from Local ProsCost of Building a Garage Addition in San Francisco, California$54.68 per square foot (custom designed, standard grade) (Range: $47.84 - $61.51) Free Estimates from Local ProsCost of Building a Sunroom in San Francisco, California$142.79 per square foot (three-season room) (Range: $117.34 - $168.23) Free Estimates from Local ProsCost of Dormer Addition in San Francisco, California$4,271.53 for single-window gable dormer (Range: $4,045.99 - $4,497.06) Free Estimates from Local ProsCost of Home Remodeling in San Francisco, California$102.50 per square foot (Range: $80.00 - $125.00) Free Estimates from Local ProsCost of Building a Closet in San Francisco, California$2,132.75 for standard bedroom closet (4 ft reach-in) (Range: $2,036.42 - $2,229.08) Free Estimates from Local Pros |
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San Francisco Home Additions Cost Data
Professionals in the San Francisco area have provided information about how much home additions cost(s). Here are some of the individual reports:
94188, San Francisco, California - January 18, 2023
Building a Closet$2,362.42 - $2,585.92 for standard bedroom closet (4 ft reach-in)
Price quote considers the cost of closet building. Items included: framing walls and hanging drywall to add a closet to an existing room (4 ft wide). Cost excludes shelving systems, storage solutions, cabinets, lighting, or larger closets.
Reported by:
ProMatcher Research Team |
94188, San Francisco, California - November 14, 2022
Building a Sunroom$136.12 - $195.16 per square foot (three-season room)
Estimate includes labor. Cost takes into account adding a three-season room to an existing structural base, installing standard-grade windows, siding, roofing and fixtures, and installing electrical access. Excludes installing insulation, extending heating and/or cooling system, installing plumbing, and pulling permits.
Reported by:
ProMatcher Research Team |
94188, San Francisco, California - December 10, 2021
Building a Home Addition$139.40 - $221.43 per square foot for standard grade construction
Estimated quote considers the cost of building a home addition. No additional charge for standard materials (windows, siding, roofing, electrical, fixtures), construction permits, and waste removal. Price does not take into account construction drawings, premium finishes, and deep foundations.
Reported by:
ProMatcher Research Team |
94188, San Francisco, California - May 16, 2021
Building a Garage Addition$57.40 - $73.80 per square foot (custom designed, standard grade)
Includes garage construction labor cost. There is no additional charge for standard materials and project cleanup. Additional cost for blueprint preparation.
Reported by:
ProMatcher Research Team |
94188, San Francisco, California - October 29, 2020
Dormer Addition$4,854.40 - $5,395.60 for single-window gable dormer
Cost includes manhours for dormer addition construction. No additional charge for framing, roofing, and finishing a gable dormer with a single window. No larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations included.
Reported by:
ProMatcher Research Team |
94520, Concord, California - January 18, 2023
Building a Closet$1,905.78 - $2,086.08 for standard bedroom closet (4 ft reach-in)
Price takes into account labor. It also includes wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Does not include built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94537, Fremont, California - January 18, 2023
Building a Closet$1,940.35 - $2,123.92 for standard bedroom closet (4 ft reach-in)
Cost of closet installation is included. Price estimate includes demolition, framing, drywall, and finishing for reach-in closet (48" wide and 28" deep). Does not include built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94509, Antioch, California - January 18, 2023
Building a Closet$1,889.94 - $2,068.74 for standard bedroom closet (4 ft reach-in)
This estimated price for closet building assumes typical conditions. The base cost tends to cover wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). There is generally an increased cost for larger sized closets, custom shelving construction, high-end closet organization systems, and cabinetry.
Reported by:
ProMatcher Research Team |
94566, Pleasanton, California - January 18, 2023
Building a Closet$1,928.83 - $2,111.31 for standard bedroom closet (4 ft reach-in)
This is the typical price range for closet installation. Generally, this includes wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). There may be an additional cost for built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94061, Redwood City, California - January 18, 2023
Building a Closet$2,186.68 - $2,393.55 for standard bedroom closet (4 ft reach-in)
This is the typical price range for closet building. Generally, this includes framing walls and hanging drywall to add a closet to an existing room (4 ft wide). These items are considered extra: built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94544, Hayward, California - January 18, 2023
Building a Closet$1,957.64 - $2,142.84 for standard bedroom closet (4 ft reach-in)
Includes the price of closet installation. Cost accounts for demolition, framing, drywall, and finishing for reach-in closet (48" wide and 28" deep). Does not include built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94015, Daly City, California - January 18, 2023
Building a Closet$1,904.34 - $2,084.50 for standard bedroom closet (4 ft reach-in)
Price range takes into account closet installation labor. Does include wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Cost does not include built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94612, Oakland, California - January 18, 2023
Building a Closet$2,003.74 - $2,193.30 for standard bedroom closet (4 ft reach-in)
Estimated quote includes closet installation. Also includes 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 |
94704, Berkeley, California - January 18, 2023
Building a Closet$1,869.77 - $2,046.66 for standard bedroom closet (4 ft reach-in)
This is considered a standard price for closet installation. The standard rate includes demolition, framing, drywall, and finishing for reach-in closet (48" wide and 28" deep). The base cost will not include shelving systems, storage solutions, cabinets, lighting, or larger closets.
Reported by:
ProMatcher Research Team |
94403, San Mateo, California - January 18, 2023
Building a Closet$2,257.26 - $2,470.81 for standard bedroom closet (4 ft reach-in)
The average cost of closet building usually falls in this range. It does include framing walls and hanging drywall to add a closet to an existing room (4 ft wide). These items will cost extra: built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94604, Oakland, California - January 18, 2023
Building a Closet$2,379.71 - $2,604.84 for standard bedroom closet (4 ft reach-in)
Here is the approximate price range for closet installation. This estimate price accounts for wall framing, drywall installation, and builder-grade finishes (rod, door, hinges, etc.). Additional charges will apply for built-in shelving, custom organization systems, and walk-in closets.
Reported by:
ProMatcher Research Team |
94801, Richmond, California - January 18, 2023
Building a Closet$1,887.06 - $2,065.58 for standard bedroom closet (4 ft reach-in)
This estimated cost includes closet building labor. Price estimate includes framing walls and hanging drywall to add a closet to an existing room (4 ft wide). Items excluded: shelving systems, storage solutions, cabinets, lighting, or larger closets.
Reported by:
ProMatcher Research Team |
94061, Redwood City, California - November 14, 2022
Building a Sunroom$125.99 - $180.64 per square foot (three-season room)
Mutliple factors determine the cost of sunroom installation. 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. In most cases, insulating materials, heating and air conditioning work, and permitting are not included.
Reported by:
ProMatcher Research Team |
94704, Berkeley, California - November 14, 2022
Building a Sunroom$107.73 - $154.46 per square foot (three-season room)
Cost includes sunroom construction. Includes 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 |
94509, Antioch, California - November 14, 2022
Building a Sunroom$108.90 - $156.13 per square foot (three-season room)
This is a base price for sunroom construction. Included in the base cost: standard three-season room addition with builder-grade materials (windows, siding, and roofing) and standard electrical work. An additional cost may apply for installing insulation, extending heating and/or cooling system, installing plumbing, and pulling permits.
Reported by:
ProMatcher Research Team |
94566, Pleasanton, California - November 14, 2022
Building a Sunroom$111.14 - $159.34 per square foot (three-season room)
The average cost of sunroom installation usually falls in this range. It does include standard three-season room addition with builder-grade materials (windows, siding, and roofing) and standard electrical work. These items will cost extra: installing insulation, extending heating and/or cooling system, installing plumbing, and pulling permits.
Reported by:
ProMatcher Research Team |
94403, San Mateo, California - November 14, 2022
Building a Sunroom$130.06 - $186.47 per square foot (three-season room)
This should be considered a ballpark estimate for sunroom installation. These items come standard: building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Certain items, such as insulating materials, heating and air conditioning work, and permitting , are not typically included.
Reported by:
ProMatcher Research Team |
94537, Fremont, California - November 14, 2022
Building a Sunroom$111.80 - $160.29 per square foot (three-season room)
Cost estimate considers labor for sunroom construction. Price estimate includes 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 |
94544, Hayward, California - November 14, 2022
Building a Sunroom$112.80 - $161.72 per square foot (three-season room)
This sunroom construction price considers the cost of labor. Also includes standard three-season room addition with builder-grade materials (windows, siding, and roofing) and standard electrical work. Cost estimate excludes insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
94604, Oakland, California - November 14, 2022
Building a Sunroom$137.12 - $196.59 per square foot (three-season room)
Estimates for sunroom installation generally fall within this range. There should not be additional fees for standard three-season room addition with builder-grade materials (windows, siding, and roofing) and standard electrical work. Expect to pay extra for installing insulation, extending heating and/or cooling system, installing plumbing, and pulling permits.
Reported by:
ProMatcher Research Team |
94015, Daly City, California - November 14, 2022
Building a Sunroom$109.73 - $157.32 per square foot (three-season room)
Estimate takes into account labor. It 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 estimate excludes insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
94801, Richmond, California - November 14, 2022
Building a Sunroom$108.73 - $155.89 per square foot (three-season room)
Price estimate includes sunroom installation. It also includes adding a three-season room to an existing structural base, installing standard-grade windows, siding, roofing and fixtures, and installing electrical access. Cost does not take into account installing insulation, extending heating and/or cooling system, installing plumbing, and pulling permits.
Reported by:
ProMatcher Research Team |
94612, Oakland, California - November 14, 2022
Building a Sunroom$115.45 - $165.53 per square foot (three-season room)
This is an average sunroom construction price. 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. Additional cost for insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
94520, Concord, California - November 14, 2022
Building a Sunroom$109.81 - $157.44 per square foot (three-season room)
Price range takes into account sunroom construction labor. 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. Cost does not include insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team |
94015, Daly City, California - December 10, 2021
Building a Home Addition$112.37 - $178.50 per square foot for standard grade construction
This is an average home addition construction price. Also includes permits, builders grade materials, demolition, cleanup and disposal. Additional cost for high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
94520, Concord, California - December 10, 2021
Building a Home Addition$112.46 - $178.63 per square foot for standard grade construction
Estimated quote includes home addition construction. Also includes permits, builders grade materials, demolition, cleanup and disposal. Cost does not take into account high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
94801, Richmond, California - December 10, 2021
Building a Home Addition$111.35 - $176.88 per square foot for standard grade construction
This is a general price for building a home addition. Cost includes standard materials (windows, siding, roofing, electrical, fixtures), construction permits, and waste removal. Excludes construction drawings, premium finishes, and deep foundations.
Reported by:
ProMatcher Research Team |
94544, Hayward, California - December 10, 2021
Building a Home Addition$115.52 - $183.49 per square foot for standard grade construction
This is a general estimate for home addition construction. Cost does include 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 |
94612, Oakland, California - December 10, 2021
Building a Home Addition$118.23 - $187.81 per square foot for standard grade construction
Includes the cost of building a home addition. Price includes standard materials (windows, siding, roofing, electrical, fixtures), construction permits, and waste removal. Estimate does not take into account construction drawings, premium finishes, and deep foundations.
Reported by:
ProMatcher Research Team |
94704, Berkeley, California - December 10, 2021
Building a Home Addition$110.33 - $175.26 per square foot for standard grade construction
This home addition construction cost estimate considers the cost of labor. Price takes into account permits, builders grade materials, demolition, cleanup and disposal. Excludes high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
94509, Antioch, California - December 10, 2021
Building a Home Addition$111.52 - $177.15 per square foot for standard grade construction
Manhours for home addition construction are included. Estimate includes permits, builders grade materials, demolition, cleanup and disposal. However, it does not include high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
94537, Fremont, California - December 10, 2021
Building a Home Addition$114.50 - $181.87 per square foot for standard grade construction
Price estimate includes home addition construction. It also includes standard grade materials, demo, building permits, and construction cleanup. Cost does not take into account high end finishes, deep foundations, and architectural plan preparation.
Reported by:
ProMatcher Research Team |
94015, Daly City, California - May 16, 2021
Building a Garage Addition$46.27 - $59.49 per square foot (custom designed, standard grade)
Includes labor. Cost estimate also includes standard materials and waste removal. Excludes design drawings.
Reported by:
ProMatcher Research Team |
94704, Berkeley, California - May 16, 2021
Building a Garage Addition$45.43 - $58.41 per square foot (custom designed, standard grade)
This is a general cost for building a garage addition. Estimate takes into account standard grade materials and debris removal. Excludes design drawings.
Reported by:
ProMatcher Research Team |
94801, Richmond, California - May 16, 2021
Building a Garage Addition$45.85 - $58.95 per square foot (custom designed, standard grade)
Estimate for garage construction is included. No additional charge for standard materials and project cleanup. Cost does not take into account blueprint preparation.
Reported by:
ProMatcher Research Team |
94509, Antioch, California - May 16, 2021
Building a Garage Addition$45.92 - $59.04 per square foot (custom designed, standard grade)
Labor is included in this building a garage addition cost. Does include standard grade materials and debris removal. Estimate does not include design drawings.
Reported by:
ProMatcher Research Team |
94520, Concord, California - May 16, 2021
Building a Garage Addition$46.31 - $59.54 per square foot (custom designed, standard grade)
This quote takes into account the cost of building a garage addition. It includes standard grade materials and debris removal. Price excludes design drawings.
Reported by:
ProMatcher Research Team |
94612, Oakland, California - May 16, 2021
Building a Garage Addition$48.69 - $62.59 per square foot (custom designed, standard grade)
Cost takes into account labor. Also includes standard materials and project cleanup. Price does not include blueprint preparation.
Reported by:
ProMatcher Research Team |
94537, Fremont, California - May 16, 2021
Building a Garage Addition$47.14 - $60.62 per square foot (custom designed, standard grade)
Price takes into account labor. It also includes standard materials and waste removal. Does not include design drawings.
Reported by:
ProMatcher Research Team |
94544, Hayward, California - May 16, 2021
Building a Garage Addition$47.56 - $61.16 per square foot (custom designed, standard grade)
Estimated quote takes into account the price of building a garage addition. Also includes standard materials and waste removal. Estimate does not account for design drawings.
Reported by:
ProMatcher Research Team |
94612, Oakland, California - October 29, 2020
Dormer Addition$4,117.36 - $4,576.39 for single-window gable dormer
This is an estimated cost for window dormer installation. Items included: standard-grade materials and supplies to build gable dormer with one average-sized window. Price excludes room-size additions, permits, interior finishes, hip roof dormers, shed dormers, home electrical wiring, or plumbing, .
Reported by:
ProMatcher Research Team |
94704, Berkeley, California - October 29, 2020
Dormer Addition$3,842.08 - $4,270.42 for single-window gable dormer
Includes the price of dormer addition construction. Cost accounts for cutting into an existing roof, framing structure, installing window, re-roofing, and re-siding. 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 |
94509, Antioch, California - October 29, 2020
Dormer Addition$3,883.52 - $4,316.48 for single-window gable dormer
This dormer addition construction cost estimate considers the cost of labor. Price takes into account cutting into an existing roof, framing structure, installing window, re-roofing, and re-siding. Excludes larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations.
Reported by:
ProMatcher Research Team |
94537, Fremont, California - October 29, 2020
Dormer Addition$3,987.12 - $4,431.63 for single-window gable dormer
Estimate includes dormer addition construction. Cost does include framing, roofing, and finishing a gable dormer with a single window. Additional charge for larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations.
Reported by:
ProMatcher Research Team |
94544, Hayward, California - October 29, 2020
Dormer Addition$4,022.64 - $4,471.11 for single-window gable dormer
Labor for window dormer installation is included. Cost does include standard-grade materials and supplies to build gable dormer with one average-sized window. Typically there is an increased cost for room-size additions, permits, interior finishes, hip roof dormers, shed dormers, home electrical wiring, or plumbing, .
Reported by:
ProMatcher Research Team |
94015, Daly City, California - October 29, 2020
Dormer Addition$3,913.12 - $4,349.38 for single-window gable dormer
Cost of dormer addition construction is included. Price estimate includes 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 |
94801, Richmond, California - October 29, 2020
Dormer Addition$3,877.60 - $4,309.90 for single-window gable dormer
Estimated quote considers the cost of window dormer installation. No additional charge for standard-grade materials and supplies to build gable dormer with one average-sized window. Price does not take into account room-size additions, permits, interior finishes, hip roof dormers, shed dormers, home electrical wiring, or plumbing, .
Reported by:
ProMatcher Research Team |
94520, Concord, California - October 29, 2020
Dormer Addition$3,916.08 - $4,352.67 for single-window gable dormer
Labor is included. Estimate accounts for framing, roofing, and finishing a gable dormer with a single window. Doesn't include larger dormers, electrical work or plumbing services, permit inspection fees, dormers for hip roofs, and interior space renovations.
Reported by:
ProMatcher Research Team |
94603, Oakland, California - December 14, 2015
Home Remodeling$80.00 to $125.00 per square foot
Price is based on degree of service: Basic consultation or Full Design Services.
Reported by:
Valerie Le Beaux, Essence of You Designs |
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San Francisco Home Addition Contractors
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Essence of You Designs
P.O. Box 6393, Oakland, CA
415-370-5933
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Safe Engineering Construction564 Market Street Suite 424, San Francisco, CA 415-747-1000
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JCA1377 El Dorado Dr, Concord, CA 925-968-6085
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