How much does a detached garage cost?

A two-car detached garage typically runs about $20,000 to $50,000 built by a contractor, depending on size, finishes, and whether it has electrical or a loft. Managing the build yourself can save a meaningful share of the labor.

Can I build a garage myself?

Parts of it, yes, but it is a full construction project. Many DIYers sub out the concrete and act as their own general contractor for framing and finishing to save money.

Do I need a permit for a detached garage?

Almost always. A permanent structure with a foundation requires permits, and inspectors check the footings, framing, and electrical. Setback rules also dictate how close to the property line you can build.

Is a garage a good return on investment?

A garage usually adds solid resale value and is one of the more sought-after additions, especially in regions with harsh winters. The return depends on local demand.

Attached or detached garage?

Attached is more convenient and shares a wall to save cost, but detached gives more placement freedom and keeps fumes and noise away from the house. Lot layout often decides it.

PROJECT GUIDE · UPDATED JUNE 2026

Detached Garage Build Cost & Project Guide

Everything for your Detached Garage Build in one place: cost by state, DIY vs. hire, the tools and materials, and a local pro if you want one.

NATIONAL AVERAGE · UPDATED JUNE 2026

HIRE A PRO

$20,000–$50,000

DIY COST

$12,000–$30,000

Typical project: A two-car detached garage, about 400 to 576 sq ft

Skill levelAdvancedAnyone can take this on. The Blueprint walks you through it, step by step.

Get the Detached Garage Build Blueprint →

Exact cost by zip →Tools & materials →Find a pro →

Source: 3+ benchmark aggregations (RSMeans, Angi, Fixr, HomeGuide) plus Submitted Quotes data

Plan your Detached Garage Build

A quick checklist to get from idea to done. Want it as a printable PDF? Grab the full free version, emailed to you.

1Set a realistic budget using the cost range above.
2Check whether your project needs a permit in your state.
3Decide DIY or hire (see the breakdown below).
4Make your materials and tools list.
5If hiring, get three quotes and compare them like-for-like.
6Plan the timeline and order materials with a 10 percent buffer.

Get the full free Detached Garage Build checklist, emailed as a PDF →

Tools and materials for a Detached Garage Build

What you will actually buy. We flag what to rent versus own so you do not overspend on a one-time tool.

Materials

Concrete slab foundation · about 480 sq ft
Framing lumber and sheathing · 1 structure
Roofing, siding, and a garage door · 1 set
Permits, electrical, and finishes · 1 set

Tools

Framing tools (nailer, saws, level) · rent or buy
Concrete and excavation equipment · rent or buy
Ladders and scaffolding · rent or buy

See all the tools and materials worth buying →

Pro tips for your Detached Garage Build

The mistakes that cost DIYers the most, and how to stay ahead of them.

Ignoring setback and zoning rules

Undersizing the slab or footings for the climate

Skipping a permit, which blocks resale

Underestimating the electrical and finish costs

Should you DIY or hire for Detached Garage Build?

It depends on three things: your skill level, your time, and your tolerance for the riskiest parts of the project.

When DIY makes sense

→You have trade-level experience or have completed this type of project before
→You own or can rent the specialized tools required
→You've read the local code requirements and understand the permit process
→A trusted helper with relevant experience is available for the critical phases

When to hire

→The project involves significant fall risk, high voltage, or gas lines
→Your jurisdiction requires a licensed contractor, no exceptions
→A DIY mistake could void your homeowner's insurance or mortgage terms
→You lack the specialized tools and can't justify renting them for a one-time job
→The project scope is large enough that crew efficiency outweighs DIY savings

DifficultyHard

Advanced, but within reach with the right prep. The Blueprint covers the safety-critical phases step by step, and a pro is there if you would rather not.

Not planning to DIY? Find a local Detached Garage Build pro →

What drives the cost of Detached Garage Build

Materials

The single biggest material variable is your product choice. One-car (about 240 sq ft) and Two-car (about 400 to 576 sq ft) sit at opposite ends of the price spectrum, a decision that can shift your materials budget by 40–60%. Key line items include concrete slab foundation, framing lumber and sheathing, roofing, siding, and a garage door, each priced per unit and sensitive to regional supply-chain conditions. Bulk purchasing and timing your order outside peak season (spring and early summer) can reduce material costs by 10–15%.

Labor

BLS occupational wage data shows exterior-trade crews earn $28–$52/hour depending on metro area, and most detached garage build jobs require a two- to three-person crew for at least one full day. Labor typically accounts for 40–60% of the total project cost. Project complexity, custom details, tight access, or non-standard configurations, adds crew time and can push labor costs well above the national average.

Site conditions

Slope, soil type, and existing-structure condition are the three site factors contractors price most aggressively. Demolition or removal of old materials adds dumpster and disposal fees that rarely appear in online estimates. Local code requirements, permit fees, required inspections, and jurisdiction-specific material standards, can add $200–$1,500 to any project before a single tool is lifted.

Rather hire it out?

Find a vetted Detached Garage Build pro near you. We never sell your info and never take kickbacks.

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Detached Garage Build cost in your state

Detached Garage Build cost varies a lot by state. Open your state for locally calibrated hire and DIY numbers.

Detached Garage Build cost in Michigan →Detached Garage Build cost in California →Detached Garage Build cost in Texas →Detached Garage Build cost in Florida →Detached Garage Build cost in New York →Detached Garage Build cost in Pennsylvania →Detached Garage Build cost in Ohio →Detached Garage Build cost in Georgia →

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