Basement Renovation Services in Thornton CO
Drive through almost any neighborhood in Thornton and there’s a good chance every third house has the same untouched basement — poured, maybe framed, and then left alone for years. It’s easy square footage that nobody’s using.
Level B Inc is a licensed basement contractor based in Denver, CO, working throughout Thornton to turn that unused space into something your household actually needs — a home office, media room, guest suite, or whatever fits your life right now.
We manage the entire project ourselves, from the first floorplan sketch through the final walkthrough, so you’re not left coordinating separate contractors on your own.
Our Services in Thornton, CO
Floorplan Design
Before any construction starts, we lay out your basement in 3D — room flow, egress placement, framing direction, and clearance around existing mechanicals — so what gets approved is exactly what gets built. We walk you through layout options based on how your household actually plans to use the space, whether that’s one large entertaining area or several separated rooms. Once the design is approved, it becomes the working plan our construction crew follows from day one.
Basement Construction
The City of Thornton requires a building permit for basement finishes, and structural changes like new openings or wall removal need to meet current residential code. We handle the submission through the City’s portal, prepare the required documentation, and coordinate inspections directly, so the process stays off your plate entirely. Our crews sequence framing, electrical, and plumbing rough-in together, which keeps projects moving through Thornton’s inspection process without unnecessary back-and-forth.
Basement Finishing
Insulation, drywall, electrical, flooring, and moisture control that actually holds up through Colorado’s seasonal swings rather than just looking finished at handoff. Thornton homeowners most often ask for a family room, home theater, home office, or guest bedroom, and we build in proper waterproofing and vapor barriers from day one. We also cover the finishing layer — trim, paint, lighting, and flooring — so the space reads as part of your home rather than an obvious add-on.
Basement Remodeling
Basement already finished but stuck with an outdated layout? We update the design, rework the space, add a bathroom or wet bar where it fits, and modernize finishes that no longer match your home. We work with the existing structure instead of starting over from bare concrete, which keeps both your budget and timeline reasonable. For homeowners who want a simpler refresh, we also handle basement resurfacing — new flooring, paint, and fixtures without a full layout change.
DIY Basement Finishing
Want to take on part of the labor yourself? Cosmetic work like painting and flooring is usually fine to DIY, and Thornton doesn’t require a permit for that category of work. Structural, electrical, and plumbing work should stay with a licensed professional, since that’s where both safety risk and inspection failures concentrate. We’ll review your specific project and tell you plainly where that line falls, and we’re glad to handle just the technical portions while you manage the rest.
How We Work
Our Expertise
Brooke, Owner & Lead Designer — founded Level B in 2013, after starting in the field in 2010 following a 2008 interior design degree. She holds a contractor’s license through the International Code Council, keeping her designs held to real code standards.
Mait, Project Manager & Designer — background in framing and interior trim carpentry, plus years running his own handyman business before Level B. His ICC contractor’s license supports a practical, buildable approach to design.
Octavio, Construction Lead — has focused on basement finishing specifically for much of his construction career, and serves as the on-site point of contact between homeowners, subcontractors, and inspectors.
Together, this team has completed hundreds of basement projects across the Denver metro, including Thornton, over more than a decade in business.
Frequently Asked Questions
Yes. The City of Thornton requires a building permit for basement finishes, remodeling, and any electrical, plumbing, or structural modifications.
Cosmetic work like painting, flooring, wallpaper, and replacing plumbing fixtures typically doesn't require a permit — but anything structural or mechanical does.
Costs depend on square footage and finish level, similar to other Denver-metro communities. We'll walk your space and provide an exact estimate.
Not without additional approval. Accessory Dwelling Units in Thornton require planning review and approval before a building permit can even be applied for.
Yes. Cosmetic work like painting and flooring is often fine to DIY. Structural, electrical, and plumbing work should go to a licensed professional.
Ready to Finish Your Thornton Basement?
We’ve been doing this in Colorado since 2013, and the approach hasn’t changed: listen first, show you the design in 3D, then build it right. If your Thornton basement has been sitting unused, let’s talk about what it could become.