Cost to Build a Detached Garage (2026)

4 min read · Updated 2026

A detached garage in 2026 typically runs $35 to $90+ per square foot, depending on how finished it is. A basic unheated two-car garage is at the low end; add electrical, finished interior, or living space above and the number climbs fast. Here's how to budget one.

Typical ranges by type

As 2026 Southeast planning ranges:

Basic 2-car (~400–600 sq ft), unfinished: ~$25,000 – $45,000
Finished & insulated 2-car: ~$40,000 – $70,000
3-car or oversized: ~$55,000 – $100,000+
Garage with finished room/apartment above: budget from real plans

What drives the cost

A garage's price per foot swings on:

Finished vs. unfinished interior (drywall, insulation, HVAC)
Electrical, plumbing, or a second story
Foundation and site prep
Doors, windows, and matching the main house's exterior

Budget it accurately

Garages vary enough that flat calculators miss. The right approach is an itemized estimate from your actual plans — foundation, framing, roofing, doors, and any electrical or finish work as real line items.

Build 360 produces that itemized budget and material takeoff from your garage plans.

Get your exact budget

Upload your plans — itemized budget, takeoff, and schedule. Money-back guarantee.

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Frequently asked

Is a detached garage more expensive than attached?

Per square foot, often yes — a detached structure needs its own full foundation, walls, and roof rather than sharing the home's. An itemized budget shows the real difference.

Do I need a permit for a detached garage?

Almost always — it's a new structure. Permit and inspection fees should be in your budget.