Direct Answer
Who frames basements in Longmont, CO?
Josh Brooks Construction and Renovation Inc. frames basements in Longmont and Boulder County, including floating walls for Front Range expansive soils, soffits, egress openings and fire blocking, with permits and framing inspections handled. Licensed general contractor (Boulder County CON-24-0152), 30 years in construction.
Basement Framing Contractor in Longmont, Colorado
Framing is the step that decides whether a finished basement lasts. Longmont sits on expansive clay soils that swell and shrink with moisture, and basement slabs here can heave. Walls framed tight to the slab push up into the floor joists above, cracking drywall and jamming doors. We frame basements the way Front Range building departments expect: floating walls, treated bottom plates and proper fire blocking, ready to pass inspection the first time.
How We Frame a Front Range Basement
- Floating (slip) walls — interior walls hang from the floor framing above with a gap at the bottom, so slab movement doesn’t lift the structure.
- Pressure-treated bottom plates anywhere wood touches concrete.
- Perimeter walls held off the foundation with insulation detailed to code.
- Fire blocking at soffits, chases and the top of walls.
- Soffits and chases built around ductwork, beams and plumbing to keep ceilings as high as possible.
- Egress openings framed for code-compliant bedroom windows. We cut and install egress windows too.
- Wood or steel studs — steel is straight, won’t rot and suits basements with past moisture issues.
Permits and Inspections
Finishing a basement in Longmont requires a building permit, and the framing inspection happens before insulation and drywall go up. We draw the layout, pull the permit, and schedule the framing, electrical, plumbing and mechanical rough-ins so nothing gets covered before it’s approved. An unpermitted basement can cause trouble when you sell or file an insurance claim.
Framing Only, or the Whole Basement
Some homeowners hire us to frame and get inspections passed, then finish the rest themselves. Most hire us for the full job: framing, electrical, plumbing, HVAC, insulation, drywall, trim, flooring and a bathroom or wet bar. Fully finished basements run $25–$60 per square foot depending on finishes. Framing-only work is quoted after a walkthrough.
Common Questions About Basement Framing in Longmont
Why do basements in Longmont need floating walls?
Much of the Front Range sits on expansive clay soil that swells when wet. Basement slabs can heave, and walls nailed tight to the slab push up into the house framing. Floating walls leave a gap at the bottom so the slab can move without damaging the structure.
Do I need a permit to frame my basement in Longmont?
Yes. Finishing a basement, including framing new walls, requires a building permit in Longmont, and the framing must pass inspection before insulation and drywall. We pull the permit and schedule the inspections.
Should I use wood or steel studs in a basement?
Both work. Steel studs are perfectly straight and won’t rot or mold, which helps in basements with past moisture. Wood is easier to attach shelving and trim to. We use pressure-treated wood anywhere framing touches concrete.
Can you just frame the basement and let me finish it?
Yes. We can frame the basement and get the framing inspection passed, and you can finish the rest. Most clients have us complete the whole basement.
How much does it cost to finish a basement in Longmont?
A fully finished basement typically runs $25 to $60 per square foot depending on the layout, bathrooms and finish level. Framing-only work is quoted after a walkthrough.
Get a basement framing estimate in Longmont, CO
Free estimate. Licensed. Local. Not a storm chaser.
Call 720-828-7997Text 720-453-5095Next steps: basement finishing in Longmont, basement finishing cost in Colorado, and basement drywall guide.


