Basement Remodeling & Finishing Contractors in Longmont, CO

“Since 2014, basement finishing has been one of the most consistent investments my clients make. In Colorado, where housing costs are high and square footage is expensive, finishing an unfinished basement is almost always the smartest way to add usable space. The key is doing it right — proper egress, moisture control, permits pulled — so it actually adds value and doesn’t create problems at resale.”

— Josh Brooks, Licensed General Contractor — License CON-24-0152 — Longmont, CO

Data You Can Trust

The ROI Case for Finishing Your Basement

Finished basements consistently rank among the top interior remodels for resale value — and Colorado’s market rewards the extra square footage.

“A finished basement is one of the smartest investments a Colorado homeowner can make. You’re adding functional square footage without touching the footprint, and you’re building equity. We’ve been finishing basements across Northern Colorado since 2014 — full permits, proper egress, everything to code.”

Josh Brooks

Licensed General Contractor — License CON-24-0152 | Basement Finishing Specialist Since 2014

Do I need a permit to finish my basement in Longmont, CO?

Yes — always. Longmont requires a building permit for all basement finishing work, including framing, electrical, plumbing rough-ins, and egress window installation. An unpermitted basement finish can void your homeowner’s insurance coverage and must be disclosed at resale. Josh Brooks Construction and Renovation Inc. pulls all permits and schedules all inspections on every basement project.

What is an egress window and do I need one for my basement?

An egress window is a large, openable window that meets minimum size requirements for emergency exit — required by the 2021 IRC for any basement room used as a bedroom. In Longmont, egress windows must meet minimum opening dimensions and be reachable from the floor. We assess every basement for egress compliance before any framing begins.

How long does it take to finish a basement in Colorado?

A standard mid-range basement finish in Longmont typically takes 6-10 weeks from permit approval to final inspection, depending on scope. Projects with bathrooms, wet bars, or custom features run longer. We provide a firm project timeline with every contract.

What is the average cost to finish a basement in Longmont in 2026?

Basement finishing in Longmont runs $25-$60 per square foot fully finished in 2026, so a 1,000 sq ft basement costs about $25,000-$60,000 depending on bathroom additions, egress requirements, and finish level. The NAR reports homeowners recover 86% of basement finishing costs at resale on average. Josh Brooks Construction and Renovation Inc. provides fixed-price contracts with no surprises.

What ceiling height do I need to finish a basement in Colorado?

The 2021 IRC requires a minimum ceiling height of 7 feet in habitable basement rooms. Beams, ducts, and mechanical equipment can drop to 6’8″ minimum. We assess your existing ceiling height before any project begins and can often work around mechanical obstacles through creative design.

Can I add a bathroom to my basement in Longmont?

Yes — and it significantly increases both the project value and resale return. Adding a basement bathroom requires a plumbing permit and often a sewage ejector pump if your drain lines run above the slab. Josh Brooks Construction and Renovation Inc. handles full plumbing rough-in coordination and all permit requirements.