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A locally owned family business serving the Madison area since 1976.


THEBCO is a locally-owned business serving the Madison area since 1976. We specialize in window and siding replacement, entry and patio door installation throughout the Dane County area. 

We offer excellent customer service and warranty on our products and services. We are experienced in residential and commercial installation. All of our employees take pride in the quality of our services and customer satisfaction.

We guarantee great customer service and product quality. We will respect your time, your budget and your decision.  Call today for your no-obligation in-home estimate!

About Us


We make it our mission to always do what’s right for our customers, even when many other contractors will not. That’s why we use only superior-quality materials and elite craftsmanship. And that’s why we always ensure your complete satisfaction with your project before we even think of considering the job done.

We have perfected our installation methods so well after all these years, that our customers marvel at how “painless” the entire remodeling process is. See for yourself by checking our reviews. The crews working on your home are the most qualified and professional installers in the business. We always show up on time and never leave a mess behind.


Thebco Google Rating
  • Dave and his crew were very professional. They did a great job with a bathroom remodeling. We definitely recommend them.

    Richard Russo
  • Definitely a 5 star experience!! Honestly I’d give an even higher rating because db exceeded our expectations in every way! Fair price, met deadlines, quality craftsmanship. Hard working, professional, highly competent and genuinely great people!!

    Leona Bodie
  • Dave and crew worked hard to transform our 1970s kitchen into a beauty, Some pictures are featured on the website. Dave is conscientious about customer service. He returns phone calls, explains pricing, suggests features, and has the skills to bring the project to completion. I plan to use DB Home Improvement for other planned improvements.

    John Lenihan
  • We couldn't be more pleased with our new PGT WINGUARD Impact Slider & Windows & the wonderful team of guys who installed them! Thank you Kevin, Brian, Rick & Dan!! These guys are true professionals! They work efficiently, clean up as they go, and insure everything is done as it should be... We look forward to working with them all again on future projects! Angela McKnight

    Angela McKnight


Thousands of people have chosen our products and we appreciate each and every one! As a bonus to our valued customers we offer a $100 check for every verified sale provided by your recommendation. If you’d like to participate please do not hesitate to contact us.

Customer Referral

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