Building a Garage Addition Cost Checklist
When evaluating a garage addition cost estimate from a local contractor, make certain the estimate contains everything you want done. Here is a checklist of items you may want to consider:
- Are they going to “stick build” it (which means construct it onsite) or is it going to be a pre-packaged modular structure?
- Are they preparing or providing construction drawings (blueprints)?
- How do they plan on preparing the site for construction? Do they need to grade, fill, or compact the site?
- Are they going to do a soils test?
- What kind of foundation are they installing (concrete or aggregate).
- Are they going to be responsible for pulling permits?
- What type of garage door are they installing? Are they installing a garage door opener? If so, what kind?
- Will the garage have windows? If so, what kind (vinyl, wood)?
- What type and grade of roofing material are they installing?
- What type and grade of siding are they using (vinyl, wood, composite)?
- Will the interior be finished or unfinished?
- Are they installing any type of security system?
If you are interested in hiring a garage contractor, we can point you in the right direction. Learn more about hiring contractors and get a free garage cost estimate.
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Learn more about the factors that impact the cost of a home addition, including your geographic location and the quality of materials chosen.
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12210, Albany, New York - November 14, 2022
Building a Sunroom$89.72 to $128.64 per square foot (three-season room)
This quote is a ballpark figure for sunroom installation. This should cover adding a three-season room to an existing structural base, installing standard-grade windows, siding, roofing and fixtures, and installing electrical access. Extra fees may apply for insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team
See the Albany Home Additions Cost Report
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33901, Fort Myers, Florida - October 29, 2020
Dormer Addition$2,829.76 to $3,145.24 for single-window gable dormer
Price range takes into account dormer addition construction labor. Does include framing, roofing, and finishing a gable dormer with a single window. Cost 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
See the Fort Myers Home Additions Cost Report
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44512, Youngstown, Ohio - March 21, 2025
Home Remodeling$5.00 to $10.00 per square foot
My billing philosophy is rooted in transparency, fairness, and value. I believe in providing clear, upfront pricing that reflects the quality and effort invested in the work. Clients should only pay for what they need, with no hidden fees or unnecessary extras. I aim to align costs with the tangible benefits delivered, ensuring every dollar spent feels justified and appreciated. Flexibility is key—whether it’s hourly rates, flat fees, or tailored packages, I adapt to what suits the client best. Ultimately, my goal is to build trust through honest communication and deliver results that make the investment worthwhile.
Reported by:
Angel Zayas, Preneur Services
See the Youngstown Home Additions Cost Report
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99599, Anchorage, Alaska - January 18, 2023
Building a Closet$1,849.60 to $2,024.59 for standard bedroom closet (4 ft reach-in)
This quote is a ballpark figure for closet building. This should cover demolition, framing, drywall, and finishing for reach-in closet (48" wide and 28" deep). Extra fees may apply for shelving systems, storage solutions, cabinets, lighting, or larger closets.
Reported by:
ProMatcher Research Team
See the Anchorage Home Additions Cost Report
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87101, Albuquerque, New Mexico - November 14, 2022
Building a Sunroom$91.30 to $130.90 per square foot (three-season room)
This estimated price for sunroom construction assumes typical conditions. The base cost tends to cover building a three-season sunroom onto an existing patio, deck, or slab foundation, standard materials (windows, siding, roofing, etc.), and basic electrical wiring. Not included in this estimate: insulation, HVAC, plumbing work, and construction permits.
Reported by:
ProMatcher Research Team
See the Albuquerque Home Additions Cost Report
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64052, Independence, Missouri - October 29, 2020
Dormer Addition$2,823.84 to $3,138.66 for single-window gable dormer
The cost of window dormer installation is included in the estimate. Price takes into account standard-grade materials and supplies to build gable dormer with one average-sized window. Items excluded: room-size additions, permits, interior finishes, hip roof dormers, shed dormers, home electrical wiring, or plumbing, .
Reported by:
ProMatcher Research Team
See the Independence Home Additions Cost Report
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