How much does it cost to build a garage?

We publish no national figure. Size, attached or detached, the site and the finish move it too far. Get quotes and total them here. See what sets garage costs .

What does a per-square-foot garage price include?

It varies by builder. Some include the door and electrical, some do not. Ask, and leave out any line already in the rate.

Is a detached garage cheaper than an attached one?

Not always. Attached garages share a wall but need fire separation from the house. Detached ones need four walls and often a longer driveway.

Do I need a permit to build a garage?

Almost always. Your local building department sets the rules. The FTC warns about contractors who ask you to get the permits.

What size garage should I build?

Start with the garage size planner . Depth for a workbench is the common miss.

HyreGarage tools

Cost to build a garage calculator

Size times the builder’s shell rate, plus the lines quoted separately. Every rate is yours.

6 lines make up a garage build quote Shell, door, opener, electrical, site and foundation, permit. Do not count one twice.

This cost to build a garage calculator, a garage building cost calculator, works from your quotes.

Multiply the width by the depth by the builder’s shell rate, then add the door, opener, electrical, site work and permit lines. HyreGarage prints no national price per square foot.

Size, attachment, the site and the finish level move it too far. Type every rate from a written quote.

Size, rate, then the extra lines

No preset prices. Nothing is emailed.

— Total of your figures

— Shell

— All-in per sq ft

What this assumed —

A sum of your figures, never a quote. HyreGarage does not build garages.

How is the cost to build a garage worked out?

Size times the builder’s rate for the shell, plus the lines builders often quote separately: door, opener, electrical, site work and permits.

The shell. Foundation, framing, roof and siding. Builders often quote this per square foot. Ask exactly what it includes.

The door and opener. Often a separate line or an allowance. See garage door installation.

Electrical. Lights, outlets, an opener circuit, maybe an EV charger.

Site and foundation extras. Grading, a longer driveway, soil or slope problems.

Permits. Set by your local building department.

Do not add a line twice. If the builder’s rate already includes the door, leave the door line empty.

What makes a garage cost more to build?

Size, attachment, the slab and the finish. We print no national price because these move it too far.

Size

Use the garage size planner first. Depth for a workbench is the usual miss.

Attached or detached

Attached garages need fire separation from the house. See fire separation code.

The slab and the site

Slope, soil and drainage set the foundation work.

Finish level

Insulation, drywall, heating and a finished floor turn a shell into a room.

What should a garage building quote include?

A scope you can compare line by line between builders.

Dimensions, wall height and roof pitch.
Slab thickness and what is under it.
Which door and opener, or the allowance for them.
Electrical scope: circuits, lights, outlets.
Who pulls the permit. The FTC warns about contractors who ask you to get it.
A payment schedule tied to stages, not all up front.

Questions this calculator answers

How much does it cost to build a garage?: We publish no national figure. Size, attached or detached, the site and the finish move it too far. Get quotes and total them here. See what sets garage costs.
What does a per-square-foot garage price include?: It varies by builder. Some include the door and electrical, some do not. Ask, and leave out any line already in the rate.
Is a detached garage cheaper than an attached one?: Not always. Attached garages share a wall but need fire separation from the house. Detached ones need four walls and often a longer driveway.
Do I need a permit to build a garage?: Almost always. Your local building department sets the rules. The FTC warns about contractors who ask you to get the permits.
What size garage should I build?: Start with the garage size planner. Depth for a workbench is the common miss.

Sources and methodology

Figures dated October 26, 2026. Last reviewed August 16, 2026.

How to avoid a home improvement scam (Federal Trade Commission, retrieved 2026-10-26. Licensed and insured, written estimates, no full payment up front, who pulls permits.)

Detached garage builder What the job involves.
Garage size planner Size it first.
Garage addition calculator Attached instead.
Garage door installation The door for a new opening.

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