Garage Conversion Cost Calculator
ADU conversion cost from garage dimensions and scope.
Inputs
%
Results
Total conversion cost ($)
$54,177
Cost per sq ft ($)$135
Materials subtotal ($)$35,180
Labor cost ($)$14,072
Floor work ($)$8,000
Door replacement ($)$9,000
Walls & ceiling ($)$4,880
Electrical ($)$4,000
HVAC ($)$2,500
Contingency ($)$4,925
Est. monthly rent ($)$0
Payback period (months)0
How to Use This Calculator
- Enter the garage square footage and the number of garage doors to be replaced or infilled.
- Select conversion type (living space, ADU/in-law suite, or home office).
- Toggle bathroom and kitchen additions if the conversion will include them.
- Review total cost, cost per square foot, and the breakdown of structural, insulation, and finish work.
- Check estimated permit costs and confirm zoning allows the planned conversion in your area.
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