Most of Cheyenne is sitting on unfinished square footage. The median local home was built around 1976, and in a climate with a deep frost line almost all of those houses went in with a full basement. That basement is already excavated, already roofed, already heated and already inside the insulated envelope of the house. Finishing it is the least expensive way to add real living space to a Cheyenne home — usually a good deal cheaper per square foot than building an addition on the same lot.
This page covers what that actually costs here, which building department you answer to, and what makes a Cheyenne basement different from a basement anywhere else.
What we finish
Every one of these has its own page with process, price ranges and the local code detail that applies. A list is a claim; the pages are the evidence.
- Full basement finishing — the whole floor, framed to finished, one contract.
- Basement bedrooms and egress — the one that most often gets done wrong, and the one an appraiser checks.
- Egress windows and wells — cutting the foundation, the well, the drainage, the cover.
- Basement bathrooms — including what to do when there is no rough-in already in the slab.
- Wet bars and kitchenettes — plumbing, venting and the difference that matters for a rental.
- Rec rooms and theater rooms — layout, sound, and where the money actually goes.
- Moisture control before finishing — what has to be dry before a single stud goes up.
- Radon mitigation — Laramie County is EPA Radon Zone 1. This is a line item, not an upsell.
What a finished basement costs in Cheyenne
Wyoming basement finishing generally runs somewhere around $24 to $62 per square foot depending on how much plumbing and how much custom work is involved. On a typical 1,000 square foot Cheyenne basement that is roughly $24,000 to $62,000, and the spread inside that range is not arbitrary — it is almost entirely about bathrooms, egress and finish level.
The low end is an open rec room: frame, insulate, drywall, paint, carpet, lighting, no plumbing, no new window openings. The high end is a full suite with a bathroom, a legal bedroom with a cut egress window, a wet bar, and finishes chosen from a showroom rather than a shelf. A local homeowner describing an above-average 1,400 square foot finish in Cheyenne put it near $80,000 — that is a real number from a real project and it is at the top end for a reason.
These are estimates and they are ranges on purpose. Anyone who quotes a Cheyenne basement precisely over the phone, before seeing your ceiling height, your mechanical layout and whether there is a rough-in under the slab, is guessing at your expense. The full cost breakdown shows what moves a project from one end of that range to the other.
Why a Cheyenne basement is not a generic basement
Three things make this market specific, and they show up on nearly every job here.
The housing stock is largely 1970s and 1980s. With a median build year around 1976, the typical basement we look at has an older panel, a furnace sitting in the middle of the floor rather than tucked into a corner, ductwork run at the worst possible height, and a ceiling that is tight before a single soffit goes in. Ceiling height is the first thing worth measuring, because it quietly decides how much of the rest is possible.
Radon is a real consideration and not a scare tactic. Laramie County carries an EPA Radon Zone 1 designation, meaning the predicted average indoor screening level is above the EPA action level of 4 pCi/L. Measured results tell a slightly softer story — averaged test data for the county comes in around 3.3 pCi/L — but individual houses vary enormously, and neighbouring homes can differ by a factor of ten. Since you are about to turn the lowest floor into space where people sleep and spend evenings, a test costs very little and settles it.
You might not be dealing with the City at all. Cheyenne addresses and Laramie County addresses answer to two different building departments with two different counters. Plenty of homeowners on the edge of town have no idea which one applies to them, and it changes the permit path.
Which building department is yours
Getting this wrong costs you a trip and sometimes a delay.
- Inside Cheyenne city limits — City of Cheyenne Building Safety, 2101 O'Neil Avenue, Room 202, Cheyenne. Phone (307) 637-6265.
- Outside city limits, in Laramie County — Laramie County Building Department. Phone (307) 633-4615.
Finishing a basement into living space normally requires a permit either way, with inspections at framing, rough-in and final. We pull the permit and meet the inspector as part of the job. The Cheyenne basement permit guide walks through the whole sequence, including what the fee is actually based on.
Where we work
We finish basements in Cheyenne itself — the older neighbourhoods north and west of the capitol where the 1960s and 1970s stock sits, the newer subdivisions out toward the east side, and everything between. Outside the city we cover Laramie County generally, including Burns, Pine Bluffs, Albin and Carpenter, where the permit conversation runs through the county rather than the city and lot sizes make exterior egress work considerably easier.
If you are unsure whether your address falls inside the city limits, tell us the street and we will tell you which department you are dealing with before you spend anything.
Common questions
Do I need a permit to finish a basement in Cheyenne?
Yes, in almost every case. Turning basement space into habitable living area means framing, electrical and usually mechanical work, and all of that is permitted work. Whether you apply to the City of Cheyenne or to Laramie County depends on whether your address sits inside the city limits. Expect inspections at framing, rough-in and final.
How much does it cost to finish a basement in Cheyenne?
Broadly $24 to $62 per square foot in Wyoming, so roughly $24,000 to $62,000 for a 1,000 square foot basement. Bathrooms, a cut egress window and finish level are what move a project across that range. These are estimates — see the cost breakdown for what drives each line.
Can a basement bedroom be legal without an egress window?
No. A room used for sleeping needs a compliant emergency escape and rescue opening. This is the single most common reason a finished Cheyenne basement fails inspection or fails to count as a bedroom when the house is appraised or sold. See basement bedrooms and egress.
Do I have to deal with radon?
You should test, and Laramie County's EPA Radon Zone 1 designation is the reason. A test is inexpensive and takes days. If the result is high, a mitigation system in Wyoming typically runs about $700 to $1,300 — much cheaper to install while the basement is open than after it is finished.
How long does a basement finish take?
Most Cheyenne basement finishes run about six to ten weeks from permit to final inspection, with the permit itself adding time at the front. Bathrooms, cutting an egress opening and long-lead finish materials are the usual reasons a project runs longer. See the timeline.
Is finishing a basement worth it in Cheyenne?
Financially it is usually the cheapest way to add finished square footage to a Cheyenne house, because the excavation, roof, walls and heating already exist. The caveat is that unfinished space only becomes finished square footage in an appraisal if it was permitted and, for bedrooms, if egress is compliant.