Drive through Hunters Glen, Eastlake or Signal Creek and you'll notice a pattern. Solid houses from the growth years, good lots, and a lot of them sitting on top of an unfinished basement. If that's your house, you've probably walked downstairs more than once and thought about what that space could be.
Finishing it is usually the most economical way for a Thornton homeowner to add living area. The structure, roof and foundation already exist, so your budget goes into the rooms themselves. It's also the job we're known for around here.
Why 2000s Thornton homes are such a good fit
Thornton's 2000s two-stories were practically built for this. The basements tend to be open, the mechanicals are where you'd expect, and nothing is usually broken. That's the honest truth we tell people at walkthroughs: most of these houses don't have a problem. They have potential. An unfinished basement is a clean project with a well-understood scope.
What goes into the finish
A full finish takes the space from bare studs to a room you'd actually want to hang out in. Our base scope covers:
- Design and the city permit
- Framing and insulation
- Electrical, plumbing and HVAC
- Drywall, paint and finish trim
- Flooring like luxury vinyl plank, carpet or tile
- City inspection and a final walkthrough
Bedrooms and living areas are part of that scope. Bathrooms are built in the same project but priced separately, since they bring their own fixtures, tile and ventilation.
Planning a bedroom down there?
Code says a basement bedroom needs an egress window. We cut the opening, set the window, place the well outside, and get it inspected. The best time to add one is during the finish, so we plan the bedroom and the window as one permitted project.
Permits in Thornton
Thornton sits in Adams County and runs its own building permits through the City of Thornton. We work with that permit desk all the time. Your basement gets filed, permitted and inspected the way the city expects, and we manage it from start to finish. You don't have to call the city or figure out their portal.
A permitted basement protects your insurance coverage and your resale value. When you sell, finished square footage with a permit trail behind it is easy to stand behind.
How long it takes
A typical full finish runs 6 to 10 weeks after the permit is approved, depending on scope. The city's review time comes before that and is separate from the build. You get a schedule up front and updates at every phase.
What it costs
Once you're past the "is this worth it" question, the money question is next. Our full basement finish averages about $80 per square foot, with each bathroom adding $12,000 and up and a from-scratch egress window at $7,000. Those are planning numbers, not a quote. The basement finishing cost page on SawDog.net walks through the math, and your free written estimate sets the real price.
We cover all of Thornton
Heritage Todd Creek and Quail Valley up north. Fallbrook Farms, Springvale and Quebec Highlands in the middle. Northbrook and The Haven at York Street near the Westminster line. Plus nearby Todd Creek, Welby and Sherrelwood.
Saw Dog Construction is based in Westminster, CO, right next door. We've been finishing basements across the Denver metro since 2015, and our work comes with a 2-year workmanship warranty and $1M in liability insurance.
Start with a walkthrough
Call or text (720) 290-4077, or send the form on SawDog.net. Tell us roughly how big the basement is and whether you want a bedroom or bathroom down there. We'll walk it and give you a written, itemized estimate, no commitment.