Building a two-car garage costs $25,000 to $60,000, per HomeGuide (January 2026), within an overall garage-building range of $15,000 to $80,0001. Angi and HomeAdvisor publish a national average of $29,584 with most homeowners paying $16,837 to $42,331 — based on 1,735 verified projects on Angi — and put a two-car garage at $15,000 to $40,00023. The two are corporate siblings, and matching figures alone don’t establish independent corroboration. The per-size figures diverge from HomeGuide’s, presented as published below.
Cost by size
HomeGuide’s table, with typical dimensions1:
| Garage | Size (sq ft) | Average cost (HomeGuide) |
|---|---|---|
| 1-car (12–16 ft x 20–24 ft) | 200–384 | $15,000–$35,000 |
| 2-car (20–24 ft x 20–24 ft) | 400–576 | $25,000–$60,000 |
| 3-car (30–36 ft x 20–24 ft) | 700–864 | $30,000–$80,000 |
Angi and HomeAdvisor publish an identical layout table with lower figures: one-car $10,500 to $27,000, two-car $15,000 to $40,000, three-car $28,000 to $57,00023. Angi adds per-size averages of about $20,000, $30,000, and $40,500 respectively — each sitting inside its published range2. For exact dimensions, Angi publishes a square-footage table — 12×20 at $7,200 to $28,800, 20×20 at $12,000 to $48,000, 22×22 at $14,500 to $58,100, up to 32×34 at $23,000 to $92,200 — and HomeAdvisor publishes the same table with a typo in that final row, where its figure reads $23,0023. An RV-sized garage, typically at least 40 feet deep, runs $36,000 to $140,000 on Angi; HomeAdvisor likewise caps a fully finished detached build at up to $140,00023.
Price per square foot and attached vs. detached
Angi and HomeAdvisor both put professional garage construction at about $50 per square foot, from $30 for a basic attached build to $120 for a high-end detached one23. Angi prices attached garages from $30 per square foot against $40 to $70 detached, and both publishers explain the gap the same way: an attached garage shares at least one wall plus utilities with the house, while a detached build needs four walls and independent connections — their own explanations, attributed12.
Materials
Angi’s exterior-materials table, per square foot2:
| Material | Cost per sq ft (Angi) |
|---|---|
| Brick | $30–$45 |
| Brick veneer | $5–$30 |
| Cinderblock | $30–$65 |
| Metal | $15–$35 |
| Stick-built | $40–$70 |
| Prefab pole barn | $40–$85 |
On shared line items, the figures diverge between HomeGuide and the siblings, presented as published: a concrete slab foundation costs $6 to $14 per square foot on HomeGuide against $6 to $12 on Angi, with Angi and HomeAdvisor both putting the total foundation at $2,000 to $7,000123. Framing runs $11 to $30 per square foot of wall area for wood on HomeGuide, or $10 to $35 for concrete block; HomeAdvisor lists $10 per square foot for timber and $10 to $35 for concrete — HomeGuide specifies wall square footage, HomeAdvisor’s label doesn’t say, so treat its units as not specified13. Siding is $4 to $15 per square foot on HomeGuide against $3 to $11 on HomeAdvisor13. Roofing is $4 to $16+ per square foot installed on HomeGuide; Angi and HomeAdvisor both publish $4 to $11, labeled “replacement” on Angi and “all-in” on HomeAdvisor — the labels differ, presented as published123. HomeAdvisor adds interior walls at $4 to $17 per square foot, ceilings at $1.80 to $10, and gutters at $4 to $40 per linear foot — the gutter figure appears on Angi too23.
Prefab vs. custom
HomeGuide prices a two-car prefab garage at $7,200 to $26,000 for the unit only — excluding site prep, foundation, electrical, and installation labor — against $25,000 to $60,000 for a custom build of the same size, its own comparison1. HomeAdvisor puts prefab metal garage kits at $4,000 to $11,000 excluding labor and permits, and Angi lists prefab pole barn construction at $40 to $85 per square foot — three different scopes and labels, presented as published23.
Doors, openers, and windows
HomeGuide prices garage doors at $700 to $3,500 each installed, with an opener adding $300 to $9001. HomeAdvisor splits doors by width — $600 to $1,500 single and $800 to $3,500 double, with custom doors from $1,000 — and, with Angi, publishes an automatic opener at $220 to $520 plus $100 to $300 for an auto-lock feature; the opener figures diverge from HomeGuide’s, presented as published123. Windows run $300 to $2,500 each on both Angi and HomeAdvisor, with HomeAdvisor adding skylights at $1,600 to $2,400 and an extra entry door at around $20023.
Labor and the pros involved
Angi and HomeAdvisor both put labor at 50% to 70% of the total, or $20 to $50 per square foot — corporate siblings, and matching figures alone don’t establish independent corroboration23. HomeAdvisor adds a general contractor at 10% to 20% of the project, electricians at $50 to $100 per hour, and plumbers at $45 to $200 per hour3, while Angi puts pre-build drafting and architectural fees at 8% to 15% of the total2. Angi’s related-project rates: garage heater installation $2,100, insulation $4,700, drywall $1,100, cabinet installation $1,3002.
Permits
Permit requirements and fees vary by municipality, so confirm with your local building authority; builders typically handle the paperwork. For budgeting, both Angi and HomeAdvisor put permits at $1,200 to $1,500 for the project23.
Add-ons and living space
Insulation is labeled differently across sources: $1.00 to $4.50 per square foot on HomeGuide against a $1,900 to $7,700 total (average $4,700) on both Angi and HomeAdvisor — different units, presented as published123. Other add-ons: storage and organization systems $500 to $2,200 on Angi; security measures $300 to $1,200 on both siblings, with cameras at $600 to $2,000 on Angi against “up to $2,000” on HomeAdvisor — a small label divergence, presented as published; extending HVAC ductwork to the garage at about $15 per linear foot on HomeAdvisor23. Adding a living space above or within the garage costs $125 to $250 per square foot on top of the build, adding $60,000 to $270,000 — identical on both siblings23.
Ongoing costs and timeline
Angi’s ongoing-cost figures: siding repairs $2 to $50 per square foot, garage door repairs $150 to $375, and electricity at about $0.17 per kWh — roughly $1.90 to $6.20 a year for a typical opener2. On timeline, HomeGuide puts a garage build at 4 to 12 weeks from start to finish, with prefab shells often up within days once the foundation is ready1; HomeAdvisor publishes 6 to 8 weeks measured from permit approval to final finishes — a different start point, presented as published3. HomeAdvisor estimates a 60% to 70% return at resale, potentially over 80% when the garage includes living space, and cautions prefab kits may not add value — its own estimates, attributed3.
Related cost guides
Already have a garage? See garage conversion cost and garage door installation cost. Weighing alternatives? Compare carport cost, shed cost and home addition cost.
The bottom line
Budget $25,000 to $60,000 for a two-car garage on HomeGuide’s figures or $15,000 to $40,000 on the range Angi and HomeAdvisor both publish, at about $50 per square foot on the siblings’ combined-rate average. Attached builds come in below detached on all three sources, and a prefab unit undercuts a custom build where its exclusions — foundation, electrical, labor — are priced back in. Get the slab, framing, doors, and permits itemized in every quote.
Sources (each fetched and read October 26, 2026; figures are each publisher’s latest published data):
1. HomeGuide, “How Much Does It Cost to Build a Garage?” (January 15, 2026) — homeguide.com/costs/cost-to-build-a-garage
2. Angi, “How Much Does It Cost to Build a Garage?” (updated August 24, 2026) — angi.com/articles/how-much-does-it-cost-build-garage.htm
3. HomeAdvisor, “How Much Does It Cost to Build a Garage?” (updated June 17, 2026) — homeadvisor.com/cost/garages/build-a-garage
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