Attached vs detached
Attached garages save one wall and share the roofline, so they usually run 10–20% cheaper per square foot. Detached garages avoid fire-separation requirements between the garage and living space and give you more placement freedom on the lot.
- • Budget a thicker 5–6 in slab if you'll park a truck or use a lift.
- • A separate subpanel is worth it if you plan on welding or EV charging.
- • Check zoning for accessory-structure height and setback caps.
Related guides
Long-form playbooks on the same topic, written by the RevenueLab editorial team.
FAQ
How much does a 2-car garage cost to build?
A standard 24×24 detached garage typically runs $28,000–55,000 in 2026 — shell only at the low end, insulated and finished with power at the high end.
Does a garage add value to a home?
In most suburban markets a garage returns 60–80% of its cost at resale, and it's often a requirement for buyers rather than a bonus, so the effect on days-on-market can matter more than the dollar return.
Can I build a garage myself?
Slab and framing are within reach for experienced DIYers, but most jurisdictions still require permitted inspections, and door installation and roofing are usually worth subbing out.
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