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The Cheapest Square Footage You'll Ever Add

Finishing a basement costs a fraction of building an addition — and in a Wisconsin winter, it's the room everyone actually uses.

Basement Finishing project by 3 Brothers Construction
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What's included

What We Build

From framing to finish, including the parts that need a permit.

  • Framing and layout
  • Moisture-smart insulation and vapor management
  • Rim joist insulation and air sealing
  • Drywall, taping and texture
  • Drop ceilings or finished drywall ceilings
  • Flooring appropriate for below grade
  • Egress window installation (required for a legal bedroom)
  • Basement bathrooms
  • Home offices, gyms, theaters and playrooms
  • Wet bars and storage built-ins
  • Electrical and lighting coordination
  • Trim and paint
Basement Finishing work by 3 Brothers Construction

Moisture First, Framing Second

The number one reason finished basements fail here is that somebody framed and drywalled over a moisture problem. Six months later, there's mold behind the wall and the whole thing comes out.

We assess moisture and drainage before we frame. If there's an issue, we tell you and address it first. If there isn't, we build with materials and assemblies appropriate for below-grade space.

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How it works

Your Project, Step by Step

1

Free inspection

We come out, look at the actual problem, photograph it, and give you a straight answer — usually within a day or two.

2

Written estimate

A clear scope and a real price in writing. No pressure to sign anything.

3

The work

Our own crew — not subs. Your property protected before we start, the site cleaned every single day.

4

Walkthrough

We walk the finished job with you before we call it done, and you get a written workmanship guarantee.

More From Our Recent Work

A few more real jobs from around the Fox Valley.

Common Questions

Do I need a permit?
Usually yes, especially for egress windows, electrical and bathrooms. We handle it.
How long does it take?
Most basements run 4–8 weeks depending on square footage and whether a bathroom is included.
Can I add a bedroom?
Yes, but it legally requires a compliant egress window. We install them.
My basement gets damp sometimes — can I still finish it?
Not until the moisture source is addressed. We'll assess it during the estimate and be straight with you.
What flooring works below grade?
Luxury vinyl plank and tile handle below-grade conditions well. Solid hardwood generally does not.
¿Hablan español?
Sí. Atendemos en inglés y español, desde la primera llamada hasta la entrega final del proyecto.

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