A 24 x 30 garage costs about $25,000-$65,000 to build, with many standard detached projects landing near $42,000. The 720-square-foot price depends mainly on foundation, framing, siding, roof, doors, electrical work, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Basic detached garage | $25,000 | $42,000 | $65,000 | Unfinished interior, standard access |
| Cost per square foot | $35 | $58 | $90 | 720 sq ft; scope varies |
| Concrete slab | $5,000 | $7,500 | $11,000 | About $7-$15 per sq ft |
| Finished, insulated garage | $45,000 | $65,000 | $95,000 | Includes expanded interior work |
Assumptions: U.S. pricing for a detached, wood-framed garage with ordinary site access; land purchase is excluded.
What a 24 x 30 detached garage usually costs
A basic 24 x 30 garage with a slab, framed walls, asphalt-shingle roof, siding, and one or two overhead doors commonly totals $25,000-$45,000. A typical midrange build with better doors, electrical service, and some storage or interior finish work is often $38,000-$65,000. High-cost markets, difficult sites, and extensive finishes can push the bill above $80,000.
At 720 square feet, those estimates work out to roughly $35-$90 per square foot. The low end generally assumes a simple rectangular layout, standard materials, limited electrical work, and no major grading. A practical starting budget for a standard, unfinished detached garage is about $42,000, plus a 10%-15% contingency.
How slab, framing, doors, and labor shape the quote
Contractor estimates differ in what they include. Comparing line items helps reveal whether site preparation, delivery, permits, and cleanup are included or billed separately.
| Cost component | Low | Average | High | Typical scope |
|---|---|---|---|---|
| Site prep and grading | $1,000 | $3,000 | $7,000 | Clear, level, and compact site |
| Concrete foundation | $5,000 | $7,500 | $11,000 | Slab, reinforcement, thickened edges |
| Framing and roof | $8,000 | $13,000 | $21,000 | Structure, sheathing, shingles |
| Siding, windows, doors | $5,000 | $9,000 | $16,000 | Exterior finish and openings |
| Labor and electrical | $5,000 | $9,000 | $17,000 | Assembly, wiring, lighting |
| Permits and delivery | $500 | $2,000 | $5,000 | Local fees and material freight |
Labor estimate: approximately 160-280 crew-hours at blended rates of $45-$85 per hour. Ask each bidder to separate labor, materials, foundation, and allowances rather than quoting only one total.
Which 24 x 30 garage specifications raise the price?
Foundation requirements can change the budget sharply. A level, well-drained site may need only basic excavation, while a slope, weak soil, or drainage issue can add $2,000-$10,000 or more. A standard 4-inch slab costs less than a thicker, reinforced slab designed for heavy vehicles or equipment; local codes and soil conditions determine the right specification.
Door count and height also matter. One standard 8- or 9-foot-wide overhead door usually costs less than two separate doors, while a 10- to 12-foot-tall opening may require taller framing and a larger door. Insulation, drywall, heating, and upgraded electrical capacity can add $8,000-$25,000 depending on finish level. Confirm whether the estimate covers the intended door openings, slab thickness, insulation, and electrical load.
How garage prices shift between U.S. regions
Construction labor and material delivery commonly make a similar garage cost 10%-25% more in high-cost coastal metros than in lower-cost rural markets. Remote locations can also pay more because of freight, limited contractor availability, or travel charges. In areas with heavy snow, wind, or seismic requirements, structural upgrades may add another 5%-15% compared with a basic build.
Permit fees vary by municipality and project value, often totaling $500-$3,000 for a straightforward residential garage, though some jurisdictions charge more or require additional plans and inspections. Use local bids and permit rules for the final budget; national averages are only a comparison point.
How long framing and installation labor can take
Once permits and materials are ready, a typical crew may need 2-4 weeks of on-site work, excluding weather delays and scheduling gaps. Slab preparation and pouring can take several days, followed by curing time before heavy framing activity. A pre-engineered package may speed framing, but it does not eliminate foundation, electrical, inspection, or finish work.
Labor charges may appear as a project total or as separate trade rates. Electricians commonly bill about $75-$125 per hour, while general construction labor often falls around $45-$85 per hour. Clarify crew size, estimated labor hours, and what delays or change orders cost.
Three sample quotes for different 720-square-foot builds
| Build scenario | Specifications | Estimated total |
|---|---|---|
| Basic | Slab, basic siding, one door, 160 labor hours | $28,000-$38,000 |
| Midrange | Two doors, windows, lighting, 220 labor hours | $40,000-$58,000 |
| Finished | Insulation, drywall, upgraded electrical, 280 labor hours | $65,000-$90,000 |
These examples assume standard wood framing and ordinary access; they exclude land and unusual utility extensions. Use them to compare scope, not as fixed contractor rates.
When removal, utilities, or site work add separate charges
Removing an old garage may add $2,000-$8,000, with higher costs for asbestos, difficult access, or extensive concrete disposal. Extending electrical service from the house can cost $1,000-$5,000 for a short, uncomplicated run and substantially more for long trenching or a new panel. Gutters, apron paving, extra windows, and storage lofts are also commonly priced separately.
Check whether quotes include hauling, delivery, cleanup, utility trenching, and driveway connection. Unlisted allowances and exclusions are frequent sources of budget overruns.
Which choices cut the garage price without shrinking it
Keep the footprint at 24 x 30 and use a simple rectangular roofline to avoid extra framing and roofing labor. Choose standard door sizes, basic siding, and a durable but conventional shingle roof. If the garage will not be conditioned, postponing drywall, heating, and premium insulation can preserve the option to finish later.
Get at least three detailed bids based on the same plans and material specifications. Schedule work outside peak demand when local contractors offer more availability, and complete simple site clearing only when the contractor confirms it is safe and useful. Prioritize drainage, code-compliant structure, and a sound slab before paying for cosmetic upgrades.