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Estimate the cost of finishing an unfinished basement by ZIP and square footage — framing, drywall, flooring, egress, and any added plumbing.
Basement finish
Egress and waterproofing
Code-compliant egress windows and any waterproofing or sump work are non-negotiable and easy to underbudget.
Adding a bathroom
A basement bath often requires an ejector pump and adds $10–20k, but it's almost always worth it for usability.
Ceiling height + obstructions
Low ceilings, ducts, and beams can force soffits that eat headroom. Walk the space honestly before designing.
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