Basement Finishing & Remodeling Contractor in Waukesha County
A Licensed, Family-Run General Contractor Building Basements Since 1973
Sennott Contractors, Inc. is a licensed general contractor that has been finishing and remodeling basements for homeowners in Waukesha County and Southeast Wisconsin since 1973. As your basement contractor, we manage the whole project under one contract: design and 3D renderings, building permits, framing, insulation, electrical, plumbing, drywall, flooring and the final inspection. Whether you want to finish an unfinished basement in Waukesha, Pewaukee, Brookfield or New Berlin, or remodel one that’s showing its age, our crew builds it to stay dry, warm and comfortable for decades.
Why Finish Your Basement?
- Increase your home’s value by up to 70% of the renovation cost
- Add living space without the cost of building an addition
- Add the rooms you need: a bedroom, bathroom, home office or gym
- Create a place to gather for movie nights, game days and holidays
- Stay comfortable through Wisconsin winters with insulated walls and a warm, dry subfloor
Basement Spaces We Design and Build
Recreation Rooms & Home Theaters
A finished rec room gives the whole family room to spread out. We design and build:
- Home theaters with sound-dampened walls and planned lighting
- Game rooms and play areas with durable, easy-clean floors
- Open family rooms with plenty of seating space
- Built-in storage to keep the room clutter-free
Custom Basement Wet Bars
A wet bar turns a finished basement into the room everyone wants to be in. Sennott Contractors designs each bar around how you like to entertain.
- Cabinets and counters: custom cabinetry, quality countertops and a bar sink
- Storage: wine racks, glass storage and organized drawers
- Finishing touches: tile backsplashes, accent lighting and room for a beverage fridge
- Styles: sports bar, wine bar, rustic pub or modern lounge
Every wet bar we build is plumbed and wired to code.
Bedrooms, Offices, Gyms & More
Guest Suites & Bedrooms
Code-compliant egress windows, a private bathroom, sound insulation and built-in closets turn a basement into a real guest suite.
Home Offices
Quiet, well-lit workspaces with built-in desks, plenty of outlets and sound control for video calls.
Home Gyms
Durable flooring for your equipment, good ventilation, mirrored walls and room for your whole setup.
Playrooms
Washable surfaces, tough flooring and storage kids can reach, so cleanup is easy.
Specialty Rooms
Wine cellars with temperature control, craft and hobby rooms, music or art studios and sports fan caves.
Planning a basement remodel in Waukesha County? Tell us how you want to use the space and we’ll design a layout around it, starting with a free consultation and a written estimate.
Recent Basement Remodeling Projects
Real basements our crew has finished for homeowners around Southeast Wisconsin. Click a project to see the full photo set.
Basement Remodel with Wet Bar in Waukesha
Updated basement with a wet bar, new flooring and white double doors.
Basement Remodeling in Fox Point
A flood-damaged basement rebuilt with new floors, cabinetry and finishes.
Looking for More Basement Ideas?
Basement Remodeling Waukesha is the basement division of Sennott Contractors, Inc. Visit our basement site for more finished basement projects, basement bathroom and wet bar ideas, and answers to common basement finishing questions.
Why Hire a General Contractor to Finish Your Basement
We Check the Basement First
Before design starts, we look at moisture, the foundation walls, ductwork, plumbing and the electrical panel. Problems get solved before framing, not after the drywall is up.
Custom Design with 3D Renderings
We plan the layout with you and show it in 3D renderings, so you can see your finished basement before construction starts.
Permits and Code, Handled
As a Wisconsin licensed dwelling contractor (DC-039600018, DCQ-06080004), we pull the permits, build to code and schedule the inspections through final sign-off.
One Contractor, Start to Finish
Since 1973 we’ve worked on thousands of homes in and around Waukesha County. One company coordinates every trade on your basement, so you’re never juggling separate contractors.
DRIcore Subfloor for a Warm, Dry Basement Floor
Moisture is the biggest threat to a finished basement in Wisconsin. That’s why Sennott Contractors installs a DRIcore subfloor membrane system in our basement finishing projects. It sits between the cold concrete slab and your new floor.
What DRIcore Does for Your Basement
- Moisture protection: the patented air gap creates a thermal break between the cold concrete and your finished floor, which helps prevent moisture buildup and mold.
- Warmer floors: DRIcore raises the floor temperature by up to 5.6°F, so the basement feels more comfortable year-round.
- Mold and mildew resistance: the engineered panels help keep mold and mildew from forming under your flooring.
- Cushioned comfort: easier on your feet and joints than flooring laid straight on concrete.
- Faster installation: the panel system lets us finish the floor faster than traditional methods.
- Works with any finish: carpet, laminate, engineered hardwood or luxury vinyl plank.
DRIcore is part of how we build basements that stay comfortable and problem-free for years to come.
Basement Insulation Built for Wisconsin Winters
Good insulation is what makes a finished basement comfortable in January. Sennott Contractors insulates basement walls with 2″ rigid foam board to keep the space warm, dry and energy efficient all year.
How We Insulate a Basement
- Assessment first: we check your basement’s moisture conditions and choose the right approach for your walls.
- 2″ XPS rigid foam board: extruded polystyrene rated R-10. It resists moisture, prevents condensation on the foundation walls and keeps its insulating value over time, unlike fiberglass that can absorb moisture. It also gives a flat, even surface for drywall.
- Sealed rim joists: the rim joist is one of the biggest sources of heat loss and moisture problems in a basement, so we seal and insulate it.
- Thermal breaks: we keep cold foundation walls from pulling heat out of your finished space.
- Sound control: insulation choices that help keep a home theater or office quieter.
- Built to code: our insulation work meets or exceeds local building codes.
The result is a basement that holds an even temperature, can cost less to heat and cool, and protects your finished walls from moisture.
Basement Finishing FAQs
Do you pull the building permits for a basement remodel?
Yes. Sennott Contractors is a Wisconsin licensed dwelling contractor, so we pull the permits for your basement finishing project, build to code and schedule the inspections through final sign-off.
How do you keep a finished basement from getting damp?
We check for moisture before design starts and fix any problems first. Then we insulate the walls with 2″ XPS foam board, seal the rim joists and install a DRIcore subfloor over the concrete. Together they help keep moisture from building up behind your walls and under your floors.
Can I see what my basement will look like before you build it?
Yes. We create 3D renderings of your layout during the design stage, so you can make changes before construction starts.
Will there be surprise costs?
No. You get a detailed written proposal with no hidden costs before any work begins.
How is Sennott Contractors related to Basement Remodeling Waukesha?
Basement Remodeling Waukesha is the basement division of Sennott Contractors, Inc. Visit basementremodelingwaukesha.com for more finished basement projects and ideas.
What areas do you serve for basement remodeling?
We finish and remodel basements throughout Waukesha County and nearby Southeast Wisconsin, including Waukesha, Pewaukee, Brookfield, New Berlin, Hartland, Delafield, Sussex, Mukwonago, Muskego and Elm Grove.
Our Basement Remodeling Process
- Free consultation: we visit, talk through your plans and look at the space.
- Custom design: we draw up plans and 3D renderings of your new basement.
- Written proposal: a detailed quote with no hidden costs.
- Permits and construction: we pull the permits and our crew builds it.
- Final walk-through: we go over every detail with you before we call it done.
Ready to Finish Your Basement?
Request a free, no-obligation basement consultation and estimate anywhere in Waukesha County.
