How Much Does a Basement Remodel Cost? [2026 Data]

Basement remodel costs $10,000–$50,000. Basic finish $25–$50 per sq ft; mid-range $50–$75; high-end $75–$150. Bathroom adds $5,000–$15,000.

Waterproofing, egress windows, and permits add significantly. Moisture issues must be addressed first. Radon mitigation may be required.

Adds significant livable square footage. Get a structural and moisture assessment before committing.