Quality. Integrity. Value.

SINCE 1989

Serving The Greater Toronto Area

35 Year Transferable Warranty

Written Guarantee on all work performed





basement lowering

Fast, Professional, Quality Basement Waterproofing Services

Need headroom in your basement to make effective use of your space, no problem! Inside Guys Underpinning can lower your basement floor giving you the headroom you need. It doesn�t matter if it�s dirt or concrete, Select basement has the knowledge and the appropriate tools to get your job done professionally!

We are happy to meet with you in your home and provide you a free assessment of the situation.

And follow up with a no-pressure, no-hassle estimate. We guarantee you Professional Results with Fair Pricing. For the quality and level of service we provide, no other waterproofing company can compare to our expertise and level of care for your home..


Get your Free estimate and Inspection


We will help you to avoid costly, disruptive demolition & reconstruction

Reduce or eliminate most future foundation related problems.

Inside Guys Underpinning can provide permanent, warranted solutions to foundation structural problems. Home and business owners appreciate the fact that many of these engineered repairs can be completed in a couple of days, with minimal disruption to the property.