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GARAGE DOORS

Garage Conversion Cost Calculator

Estimate the cost of converting a garage into living space by area, scope and finishes.

JOB INPUTS

Enter your numbers

Loading saved values

Garage area in sq ft

sq ft
Garage area in sq ft

Basic, full or high-end

Basic, full or high-end

Drywall, insulation, HVAC

Drywall, insulation, HVAC

Permits and city fees

Permits and city fees
Results update automatically
CALCULATED RESULTUSD
Estimated total cost$21,620.00
Conversion$17,600.00
Finishes and HVAC$3,520.00
Permits$500.00
FORMULA USED440 sq ft × $40.00 + finishes + permits = $21,620.00

HOW TO USE IT

How to use the Garage Conversion Cost Calculator

  1. 1

    Enter the garage area in sq ft.

  2. 2

    Choose the scope (basic, full or high-end).

  3. 3

    Set finishes and HVAC, and permits.

  4. 4

    Review the total cost.

THE MATH

Garage conversion cost formula

Total = area × rate + finishes + permits

A full conversion runs ~$40/sq ft. Finishes and HVAC add ~$8/sq ft and permits ~$500.

PRACTICAL EXAMPLE

440 sq ft, full conversion, with finishes and permits

Conversion = 440 × $40 = $17,600. Finishes = 440 × $8 = $3,520. Permits = $500. Total ≈ $21,620.

FAQ

Frequently asked questions

How much does a garage conversion cost in 2026?

Nationally, $25-$75/sq ft depending on scope.

Do I need a permit?

Usually yes — check local zoning and building permits.

Can I add a bathroom?

Yes, but plumbing and connections add several thousand.