Conversions cluster
Garage and Basement Conversion Costs: Finishing and Remodeling
Converting a garage or finishing a basement is the cheapest way to add livable square footage, because the shell already exists. This hub collects the RenoCalc Hub guides on what those conversions actually cost once insulation, egress, HVAC and permits are priced in.
- Conversions add square footage without a foundation or roof, so cost per sq ft is low.
- Egress windows, insulation and HVAC extension are the hidden budget lines.
- Permits and inspections are non-negotiable when adding livable space.
Guides in this cluster
Garage Conversion Cost: 2026 Calculator & Full Guide
Convert a garage to living space without blowing the budget. Real 2026 per-square-foot costs for bedrooms, offices, and ADUs — plus a permit and insulation checklist.
Read guideGarage Renovation Cost Calculator: 2026 US Price Guide
A full garage renovation runs $8,000-$45,000 in 2026 depending on scope. This guide breaks down what you actually pay per square foot for drywall, insulation, epoxy floor, electrical, and a new insulated door — with a free calculator that adjusts for your ZIP code.
Read guideGarage Remodel Cost Calculator: 2026 US Pricing Guide
A garage remodel in 2026 can mean anything from a $2,500 epoxy-floor weekend project to a $50,000 conditioned living-space conversion. This guide gives you 2026 cost-per-square-foot benchmarks by scope and a free calculator that adjusts for your ZIP code.
Read guideBasement Finishing Cost Calculator: 2026 Price per Square Foot
Finishing a basement is the single cheapest way to add livable square footage in 2026 — typically $35-$95 per finished square foot, vs. $180+ for an addition. This guide breaks down the 2026 numbers by scope and ZIP code.
Read guideCalculators for this topic
Frequently asked questions
How much does a garage conversion cost in 2026?
Most single-car garage conversions run $12,000-$30,000, and two-car conversions $20,000-$50,000, depending on whether you add a bathroom, HVAC and full insulation.
What does it cost to finish a basement?
Basement finishing commonly runs $35-$75 per square foot in 2026, so a 900 sq ft basement typically lands between $32,000 and $67,000.
Do conversions need a permit?
Yes, whenever you create habitable space. Inspectors check egress, ceiling height, insulation, smoke detection and electrical — unpermitted work causes problems at resale.