Basement Finishing Contractor in Denver
Turn your unfinished Denver basement into the most used room in your house.
An unfinished basement is thousands of square feet of untapped potential. In Denver's housing market, finishing your basement is one of the most cost-effective ways to add living space, increase your home's value, and create rooms your family actually uses — bedrooms, bathrooms, home offices, home theaters, playrooms, or guest suites.
Basement finishing in Denver typically costs between $30 and $75 per square foot, depending on the complexity. A basic 1,000 sq ft finish (framing, drywall, flooring, lighting, egress) runs $30,000–$50,000. A full buildout with a bathroom, wet bar, and premium finishes can reach $60,000–$100,000+. We provide detailed, itemized estimates before work begins.
Denver basements come with specific challenges that require local expertise: moisture management in Colorado's semi-arid climate (yes, basements still get wet here), radon mitigation requirements, proper egress windows for bedrooms, and HVAC ductwork routing. Our team has finished hundreds of Denver basements and knows how to handle every one of these issues correctly.
We handle the complete project: design consultation, permit applications, framing, electrical, plumbing (if adding a bathroom), HVAC modifications, insulation, drywall, flooring, trim, painting, and final inspections. One contract, one team, one point of contact throughout the build.
WHY DENVER HOMEOWNERS CHOOSE 303 CONSTRUCTION
20+ years of Denver basement finishing experience
Moisture management and radon mitigation expertise
Egress window installation for code-compliant bedrooms
Full bathroom and wet bar additions
Permit handling and inspection coordination
Detailed estimates with no surprise costs
OUR PROCESS
Free Consultation
We assess your basement, discuss your vision, review any moisture concerns, and provide an estimate.
Design & Planning
We create a layout that maximizes your space and meets building code requirements.
Permits
We pull all required building permits and schedule inspections throughout the project.
Construction
Framing, electrical, plumbing, HVAC, insulation, drywall, flooring, trim, and paint — all under one roof.
Final Walkthrough
We walk through the finished basement together, address any items, and pass all city inspections.
FREQUENTLY ASKED QUESTIONS
Common questions from Denver homeowners about this service.
Get a Free Estimate
Every project is different. Tell us what you need and we'll give you an honest estimate — free, no obligation.