Garage Conversion to Living Space Cost
Converting an attached garage into living space is one of the most cost-effective ways to add square footage. As an ADU, it can generate significant rental income to offset conversion costs.
Low Estimate
$15,000
Mid-Range
$35,000
High End
$75,000
Avg ROI
62%
Interactive Cost Estimator
Mid-grade materials, good quality fixtures, standard options.
Estimated Total Cost
$35,000
Based on 200 sq ft at mid quality. Actual costs vary by location and contractor.
Cost Breakdown
Approx. $17,500 at mid-range pricing
Approx. $17,500 at mid-range pricing
Labor-heavy projects (with high labor costs) benefit most from getting multiple contractor bids. You can save on materials-heavy projects by sourcing materials yourself at contractor pricing.
What Affects the Price
- 1Garage size
- 2Insulation and HVAC addition
- 3Flooring over slab
- 4Window additions
- 5Egress compliance
Popular Upgrades
- ADU (accessory dwelling unit)
- Home gym
- Guest suite
Discuss upgrades with your contractor before finalizing the quote. Some upgrades are cheaper to include during initial construction than to add later.
DIY vs. Hire a Pro
Professional installation strongly recommended.
DIY Advantages
- • Save 50% on labor costs ($17,500 at mid-range)
- • Control over timeline and material selection
- • Satisfaction of completing the project yourself
- • Flexibility to work in phases
Pro Advantages
- • Guaranteed workmanship and professional finish
- • Proper permits and code compliance
- • Access to trade pricing on materials
- • Required for safety and code compliance
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