Look elsewhere if you want a company that stands by its word. I was quoted $675 on-site for a foundation repair, but their text follow-up jumped the price to $725. When I questioned the increase, they blamed a 'material cost increase' they forgot to mention. If a business misquotes a job, they should eat that difference instead of quietly passing it to the customer. Even after I called out the lack of transparency, they made zero attempt to make it right or honor their original price. I canceled

Northern Illinois Waterproofing did a great job helping solve a window well drainage issue. Service was great and price was reasonable. Highly recommend.

Hire. These. Guys. They are responsive, knowledgeable, friendly, and local. I called on a Sunday because I had an old patch in the basement that was leaking. I was immediately talking to a real person who understood the situation and asked me to send a photo. I had an estimate within an hour. Less than 24 hours later, they had finished the work and cleaned up. I am impressed.

I contacted Northern Illinois Waterproofing because I discovered a leak in my basement. From the first call/text to the last, I received top notch service. I had a lot of questions and they were all answered before the service started. On the day of the repair Mark texted to let me know he was on his way. The repair was completed in under two hours, he explained what he did and was very patient with me. I feel I made the right choice.

We’ve used Northern Illinois Waterproofing several times over the past decade (2013, 2018, and again this week) for sump pump installations and other waterproofing work and every experience has been excellent. It’s a true family business and you can feel it in how they treat their customers. Dawn is incredibly responsive and makes sure everything is handled promptly. Their pricing is fair, and the reliability, professionalism, and personal service are outstanding. Highly recommend.

I contacted Northern Illinois Waterproofing and Construction after a neighbor recommended their services. When I called, an administrative assistant gathered details about my concern and confirmed that there was access to the area. She mentioned that Mark would reach out soon. Later that morning, Mark stopped by to take a look at a small crack in my foundation wall that had begun to allow some seepage. We discussed the issue, and he provided a verbal quote on the spot. That same evening, I recei

We have a unique basement that was built in the mid 1980's by the previous owners 20 years after the house was built. Numerous mistakes were made in the construction of the basement which led to a lot of seepage. After years of attempting, unsuccessfully, to fix the issues myself, I contacted Mark and NI Waterproofing. Mark clearly articulated the problem areas and offered solutions that were different than a couple of the other waterproofing companies suggested. We hired Mark, and we are very

Northern Illinois Waterproofing did an excellent job from start to finish. The team was professional, knowledgeable and took the time to explain everything clearly. They handled our foundation repair, installed a new sump pit and pump, and buried the downspout extensions and the quality of the work was outstanding. Their pricing was fair and transparent with no surprises and everything was completed on schedule and exactly as promised. I highly recommend them to anyone dealing with water or