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Basement finishing in Missoula and the Bitterroot Valley
The cheapest square footage you will ever add to your house — if the moisture, egress and ceiling height get solved before the framing starts.
Moisture first. Everything else second.
Finishing a basement that has a water problem is the most expensive way to hide a water problem. Before we frame anything we look at grading, downspout discharge, the sump if there is one, and any staining on the slab or the base of the walls. If we find something, we price fixing it and we tell you plainly that finishing over it is a bad trade.
Once it is dry, the assembly matters. Framing walls tight against a foundation wall with no thought to vapor is how you get mold behind new drywall in year three. We detail it for a Montana basement: the right clearance, the right insulation in the right place, and a slab treatment that will not trap water under your flooring.
Egress is not optional
Any basement room you intend to sleep in needs a compliant egress window or door — a large enough opening, low enough sill, and a window well you can actually climb out of. This is the single most commonly skipped item in DIY and cut-rate basement finishes, and it is the item that turns a "bedroom" into a room you cannot legally call one when you sell the house. If your basement needs an egress window cut into the foundation, we say so at the walkthrough and it is in the estimate as its own line.
Ceiling height, ducts and the soffit game
Basements are a puzzle of beams, ductwork, plumbing and wiring running exactly where you want a flat ceiling. The trick is deciding early which runs get boxed into a soffit, which get rerouted, and which get left alone — because moving a main trunk line to save four inches is rarely worth it. We lay this out on paper first, which is why build design and basement finishing so often get bought together.
Floors: epoxy, carpet or LVP
On a basement slab all three work, and they suit different rooms. Epoxy is hard-wearing, moisture-tolerant and easy to mop, which makes it a strong choice for a rec room, a shop area or a walk-out. Carpet is warm underfoot and quiet, which matters in a family room or a bedroom. LVP splits the difference. We have installed all three in basements and will tell you which fits your slab and your use.
Basement work we do
- Moisture assessment before any framing goes in
- Egress window and window well installation, cut into the foundation
- Wall framing detailed for basement vapor and insulation
- Soffits and bulkheads to box in ducts, beams and plumbing
- Drywall, taping, texture and paint
- Recessed can lighting and electrical rough-in with licensed trades
- Basement bathrooms and wet bars
- Bedrooms, offices, rec rooms and home gyms
- Epoxy floor coatings, carpet and LVP over slab
- Cedar wainscot, trim, doors and finish carpentry
- Stair rebuilds, railings and under-stair storage
Our work
Basements we've finished, start to finish
The first three photos are the same room on three different days — that is what a real basement build actually looks like from soffits to sealed floor.
Questions
Common questions
Does a basement bedroom need an egress window?
Yes. A room used for sleeping needs a compliant emergency escape and rescue opening, sized and positioned to code, with a well you can get out of. If your basement does not have one, we price cutting one in as a separate line so you can see exactly what that part costs.
My basement smells musty. Can you still finish it?
Not until we know why. Musty usually means moisture, and moisture behind new drywall becomes mold. We look at grading, gutters, downspout discharge and the slab first, fix the cause, and finish after. Anyone willing to frame over it without asking is doing you a disservice.
Do I need a permit to finish a basement in Missoula?
Almost always. Finishing a basement adds habitable space and typically involves electrical, sometimes plumbing, and often an egress opening — all permitted work. We confirm whether you are under the City of Missoula Building Division or Missoula County and handle the application and inspections.
My ceiling is low. Is finishing it a waste of money?
It depends on how low and where. There is a minimum finished ceiling height for habitable rooms, and if you are under it for the whole floor, the honest answer may be to finish it as unconditioned storage or a shop instead. We measure before we quote so you are not paying us to discover it.
How long does a basement finish take?
Most residential basement finishes run four to eight weeks on site depending on square footage, whether a bathroom is involved, and inspection scheduling. You get a written schedule with the estimate and photos as we go.
Can you just do part of it?
Yes. Plenty of people frame and rough-in now and finish rooms later as budget allows, or have us do the framing, electrical and drywall and handle their own paint and flooring. Tell us where you want the line drawn.
Ready for a straight answer on your project?
Free walkthrough anywhere in the Missoula area. Written estimate in 48 hours. No pressure and no sales pitch — just a number you can trust.