These are typical Metro Detroit market ranges for 2026, drawn from local cost data — not Done Right Homes' prices. Every basement is different and quoted individually.
The short answer: finishing a basement in Metro Detroit typically runs $25–$50 per square foot, or roughly $20,000–$50,000 for a typical project. A small, open finish can start around $12,500; a full lower level with a bedroom, bathroom, and egress can run $50,000–$85,000.
By scope
Basic open finish — roughly $12,500–$25,000
An open rec room or family space: framing, insulation, drywall, flooring, lighting, and trim, usually in a smaller (~500 sq ft) footprint.
Typical full finish — roughly $25,000–$50,000
A larger finished basement, often with a bedroom or office, better finishes, and a defined layout.
Full lower level — roughly $50,000–$85,000
A bedroom plus a full bathroom, an egress window, and extras like a wet bar — the version that lives like real square footage.
What drives the cost
- Size — basements price largely by the square foot, so the footprint is the biggest lever.
- A bathroom — adding one typically runs $10,000–$25,000 (it brings in plumbing).
- Egress windows — the code-compliant emergency exit that turns a basement room into a legal bedroom and brings in daylight. Required if you want the room to count.
- Moisture and waterproofing — handling water before you finish runs $2,000–$8,000, and it's not optional in a Michigan basement.
- Finishes and ceiling height — Detroit's older homes often have tall basement ceilings ideal for finishing; your finish level sets the rest.
Where the money pays back
A finished basement is one of the few remodels that can return most of its cost — but the value lives in doing it to code. A finished basement recoups roughly 60–80% of its cost at resale, and a permitted, egress-compliant build with a legal bedroom and bath is worth far more than an unpermitted “finished” space. Worth knowing: appraisers value finished basement space at a discount to your above-grade square footage and report it separately — so the payback comes from legal, usable living space and an added bedroom or bath, not from your home's official square-foot count. Build the version that counts.
A Michigan note worth knowing
In Michigan, any home-improvement project over $600 has to be put in writing — a signed contract with the full scope and price. So always get the scope and price in writing before work starts, and make sure your contractor carries insurance — it protects you, and it protects the value at resale.
How long does it take?
Most basement finishing projects run 2–4 weeks, depending on size and scope. You get the timeline in writing, up front, with the price.
How to budget for yours
These ranges get you in the ballpark — your basement's size, condition, and finishes set the real number. That's what we give you: a free, written, itemized estimate, no obligation, and the number we quote is the number you pay.
Ready for a real number? Get your free estimate.