GSI Foundations

See what others have said about us!


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Great service at affordable prices

Bill Brasky

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I am an investor and have used GSI multiple times. I am always extremely happy with them. They have really helped my rehab business and I never shy away from rough basements when looking for properties knowing they can handle it. Thanks again guys!

Bob R

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They came highly recommended to me and I was very satisfied. The scope of work was explained very well to me and I felt confident in what they needed to do. I will definitely recommend them to others.

Will G

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Super job. Wow these guys work hard. Thanks!

James G

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"As a real estate broker, it is a privilege to recommend GSI Foundations to clients and customers knowing the work will be done right and at a good value. As a recent customer of GSI myself, I can say the recommendations I have made over the years are 100% backed up by my experience. Top notch, well done work at extremely competitive pricing."

John Newland

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"I've known Dave and his crew for a few years and have used them several times as well as have referred them to multiple customers. I wouldn't hesitate to continue doing the same moving forward. The best customer service and quality on the street!"

Jefferery Konig

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I had a drain tile system put in my home by GSI. They were very prompt, & very professional! I was quite impressed at the quality of work done, how fast it was completed & the cost was under what I expected for a job this involved. Thanks again GSI!

Mark Pierret

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"Great company, needed the job done quick and Dave and his team were able to accommodate. Job quality was topnotch. Dave went above and beyond to make sure I was satisfied."

Kandace Zuehlke

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GSI was great to work with for our foundation repair. They got things done quickly and did an excellent job!

Jason Schafer

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GSI foundations did a wonderful job on bracing a basement wall for me. They were prompt and provided a free estimate on the work.. The braces are custom made and were installed in a day.

Tom Jilbert

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"I have worked with GSI many times and have had nothing but a great experience. GSI has always been a company that will fix what needs to be fixed not just try to sell you more. Great people, Great workmanship at a Great price! I highly recommend them!"

Dan Ney

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I am so impressed with the quality of work that you guys did in my basement. When I was looking for estimates I didn't fully understand what they wanted to do with my basement until GSI came and took the time with simple words for me to understand what they were going to do. I recommend you using GSI if you have any problems.

Adryana Green

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"Great price, great service, and their turnaround time was incredible. I will definitely use them again for any future projects."

Robert Krauss

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"Excellent work. Their pricing beat out all the competition. Professional and they cleaned up after themselves. A++++++"

Brian Meidam

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"I cannot say enough good things about this company. Incredible service and quality and they are always the least expensive out of all the quotes we get. They clean up after they are done too. I am so impressed by the way this company operates. Keep up the outstanding work!"

Rebecca Holmes

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“I've worked with Dave Graf and GSI Foundations on many basement projects and they always come through without a doubt. Being a real estate investor we are always looking for the best people to work with and their timeliness, quality, and pricing are second to none. If you are having any basement issues, whether it's water in your basement, cracks in the walls, sump pump issues, or any other basement problems these are the guys to call. I recommend them to everyone I know.”

Mitch Ferraro

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Thanks!

Matt J

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"I highly recommend GSI Foundations! Dave, the owner, is accommodating to your schedule, quick, efficient, honest, reliable and his workers do a great job! Totally satisfied."

Lisa Weston

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Dave and his crew went above and beyond. Dave’s crew worked tirelessly to do a new drain tile for a 100+ year old home in Waukesha. His prices were much more reasonable than other quotes we got, and we thought the value for the price was well worth it! I would recommend Dave and his crew to anyone!!

Michael Fitzpatrick


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