General Contractor Who Handles It All.
St. Louis Custom Basements That Double Your Living Space
We frame, wire, and finish your basement with egress windows, recessed lighting, and moisture-resistant materials. We self-perform many aspects of the job to keep your project moving forward.
SMART HOME UPGRADE
Your Basement is the Fastest Way to Add Living Space
Building an addition and moving are expensive. An unfinished basement already has the footprint, the walls, and the potential.
Turn it into a home office, guest suite, wet-bar lounge, or gym with lighting, moisture control, and egress windows where needed. That’s the kind of basement project Castlewood builds across the metro.
SAFETY + RESALE VALUE
Egress Windows Built to Pass Inspection
Here’s something most homeowners don’t find out until it’s too late: you can build a beautiful bedroom in your basement, but if it doesn’t have a window big enough to climb out of in an emergency, the county won’t call it a bedroom — and neither will the appraiser when you sell. That window is called an egress window, and we cut and install code-compliant ones that meet local requirements.
Bonus: they flood the room with natural light — exactly what a basement needs. Real bedroom, real value added, and a safe way out your family will hopefully never need.
MOISTURE CONTROL
Basements Get Damp. We Build for It.
Your basement sits underground, so a little moisture comes with the territory. The difference between a basement that stays fresh and one that smells musty in two years is what happens before the drywall goes up. We use framing materials that stand up to moisture, and we plan the insulation, vapor barriers, and drainage before we build — not after there’s a problem to patch.
LIGHTING & POWER
The Right Lighting Makes the Whole Space Work
Dark basements with a few bare bulbs feel like basements. Proper lighting changes that entirely. In addition to the build, Castlewood can also install recessed lighting, dimmers, entertainment wiring, and smart-home features.
ABOUT CASTLEWOOD
Your Local St. Peters Neighbor With Big-City Standards.
Guest Suites
Entertainment Rooms
Home Gyms
Rubberized flooring, ventilation planning, and outlets placed where the equipment actually goes.
SUCCESS STORIES
What St. Louis Homeowners Are Saying
Jim and team are top-tier contractors in the St. Louis metro. Highly recommend their services.
Zach Dalin
We Finish Basements Across the St. Louis Metro Area
Based in St. Peters, Missouri, serving residential and commercial properties across:
St. Louis City · St. Louis County · Ladue · Clayton · Kirkwood · St. Charles County · St. Peters · St. Charles · Wentzville · O’Fallon · Lincoln County · Troy · Winfield
GET STARTED
Start Your Basement Project With a Clear Plan
Tell us what you want in your basement. We’ll review layout, lighting, and egress needs, then walk you through a clear build plan and next steps.