BasementUnderpinning Toronto
Basement Underpinning Toronto
A basement with low ceiling height is wasted potential, basement underpinning Toronto homeowners choose solves that by actually lowering the foundation floor, not just excavating around it. Unlike crawl space conversion, which improves an existing space, underpinning creates genuine basement height where none existed before, opening the door to a real living area, home office, or rental unit. Because this work touches your home’s structural foundation, it’s a job for licensed professionals only. Contact Aquatech for a free assessment of your basement underpinning project.
What Is Basement Underpinning?
Basement underpinning is a structural process that lowers your basement floor by excavating beneath the existing foundation and pouring new, reinforced concrete footings at the deeper level. Done in alternating sections rather than all at once, this keeps your home structurally supported throughout the process while gradually increasing your ceiling height.
Once complete, a space that started as unusable crawl space or a cramped, low-clearance basement becomes genuine livable square footage. It’s one of the most involved services Aquatech offers, which is why it’s handled only by licensed, experienced professionals, not a DIY-adjacent project like some smaller repairs.
Aquatech, Trusted for Over 30 Years
What Our Clients Have to Say
Basement Waterproofing Testimonials
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Rated 5 out of 5 starsIgor and Anatolia installed a new sump pump and interior waterproofing after a basement flood. The crew worked efficiently, kept the area clean, and finished on schedule. Professional, knowledgeable, and fairly priced—would absolutely recommend.
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Rated 5 out of 5 starsVlad’s crew worked diligently and professionally to waterproof our foundation. They made sure everything was tidy and clean when they were done. Everything was very good from the beginning communication to get the quote until the very end. We highly recommend this company.
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Rated 5 out of 5 starsJust had our house waterpoofed by Aquatech – fabulous job! They did exactly what was outlined to us … no surprises, which was wonderful. The workers on site, Igor and Anatoly, were amazing, very professional and detailed oriented. We had a couple of things that were out of the scope of the project and Igor went over and above resolving all issues beyond our expectations. In all, a very professional job and they tidied up after themselves – highly recommend!!
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Rated 5 out of 5 starsAlex and crew just finished. They were quick and left no mess afterwards. Time will tell how the exterior waterproofing holds up but I’m hoping it’s good now!
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Rated 5 out of 5 starsAlex & Alex dud an amazing job. Prompt, hard workers and kept everything as clean as possible. Looks great .than you.
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Rated 5 out of 5 starsMy basement sump pump room wall just below my outside stairs and veranda were wet when we had more than 1 inch of rain. I called Aquatech Basement Waterproofing, and assigned Eric to meet me and assessed the work to be done and provided a very reasonable quote, and the work was scheduled to meet my schedule. There were 2 crews of 2 men all from Ukraine, all very knowledgeable, professional and did a wonderful job. They protected the flooring from the my main doorway right down to the basement room where the work was being done. The first 2 man crew removed the Styrofoam from that was on the basement walls and ceiling, moved my battery backup sump pump and moved to a safe locatiion while working in a small area. They broke the concrete floor around the room down to the footings, which needed to be to add weeping tile. They cleaned the area as they worked, removed the concrete debris and then brought in the required material to install weeping tile. The second crew assisted with the installation of the waterproof membrane on the walls, install the weeping tile and cementing of the part of the floor where the weeping tile was installed and added to the sump pump basin. They reinstalled the light and light switch, wall plug outlet. This all was done in a few hours. I would highly recommend Aquatech as their staff are very knowledgeable and very efficient in doing their job. I would definitely use them again if I have any future for any basement Waterproofing, or water issues. Thank you so very much Dianne P. The were very professional s advised that I ca Eric came by promptly, assessed the situation, gave me a quote, very reasonable and scheduled
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Rated 5 out of 5 starsThanks to Andrew, Will, Vasyl, and Yuriy of Aquatech Waterproofing, I no longer panic when the weather forecast calls for rain. The four-man team applied interior waterproofing to a large portion of my basement in less than seven hours. They placed Dimpleboard on the walls, installed and covered new four-inch plastic weeping tile pipe and also backfilled, cleaned and cemented the entire work area. The crew was courteous, on time and professional. Company representative, Nico, who appraised the job before the work began, was also very knowledgeable and kindly answered all my questions. The cost was extremely reasonable and I have a transferable life-time warranty for their services. I highly recommend them.
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Rated 5 out of 5 starsAquatech Project Consultant Richard responded ultra-quickly to my call for an estimate on 2 cracks on the inside of my basement foundation wall, visible only after I removed panelling & insulation & only when it rained heavily & water was pouring through those 2 small cracks. Richard impressed me with his assessment expertise & the speed at which he provided the best quote & solution for my leaks & my budget as a retiree on a fixed income. The repair on the outside wall with weeping tile replacement & utilities locates was scheduled & communication with Rita in the office & follow up with Richard was excellent. The day of the repair, Water Proof Technicians Vasyl & Yuriy arrived on time & ready to work. They were totally professional, polite & prepared with expertise & the right equipment to complete the task. They impressed me to no end with their work ethic & support for each other rotating in & out of the trench to get down to the footings. They installed the new weeping tile, cleaned the foundation wall & revealed 2 very long cracks which they V cut and repaired with hydraulic concrete. The rest of the process was their standard applications of Aqua Block, fibreglass mesh, another layer of Aqua Block, a layer of Poly-tarp, & a Dimpleboard membrane installation. They back filled the trench & cleaned up the area to perfection. Aquatech is blessed to have Vasyl & Yuriy as employees – thorough & meticulous. They are 12 out of 10 in my opinion!!! Note: 2 of my neighbours were impressed & asked for Aquatech’s phone number from me. Thank you Richard, Rita, Vasyl & Yuri.
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Rated 5 out of 5 starsAquatech consultant, Shawn McGirr, investigated my water problem and provided a realistic and cost effective solution. A few days later Bob and Alex arrived to do the work. They both worked very hard and were efficient and clean. They completed an incredible amount of work in a very short period of time and left the worksite as clean as it was before they arrived. I’m confident that the issue has been resolved and comforted by the lifetime warranty.
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Rated 5 out of 5 starsAlex, Eugene, Mike and Igor did an amazing job with my basement waterproofing project. They were very personable, very hardworking and very efficient. I was very pleasantly surprised how quickly they finished the job. Everything was cleaned up and put back in order when they were done. I definitely recommend Aquatech Waterproofing. From my first meeting with Tony to discuss the project, I could tell they were the right choice
How Much Does Basement Underpinning Cost in Toronto?
Basement underpinning in Toronto typically costs $100 to $500 per square foot, with a small residential project usually running $10,000 to $25,000 total. The exact cost depends on your foundation type, the underpinning method used, excavation depth, and site accessibility. Because this is structural work, get an itemized quote from a licensed contractor rather than a rough estimate, the scope varies significantly from home to home. Contact Aquatech for a free, detailed assessment.
Basement Underpinning VS Bench Footing
Underpinning and bench footing are both methods used to increase basement height, offering either extra living space or fixing foundational issues. Below are some distinctions between the two processes:
| Aspect | Basement Underpinning | Bench Footing |
|---|---|---|
| Technique | Excavation under foundations, new footing installation. | Basement floor excavation, construction of an interior ‘bench’. |
| Space Increase | Full space maintained, maximum space increase. | Some space added, ‘bench’ encroaches on the perimeter. |
| Cost Implications | More labor-intensive, can range from $20,000 to $100,000+. | Less extensive work, roughly between $20,000 to $50,000. |
| Regulatory Compliance | More permits and stricter codes, added cost for compliance. | Generally fewer regulatory hurdles and related expenses. |
| Professional Involvement | Essential due to complexity, adds to the cost. | Required for proper execution, included in the cost. |
Why Choose Aquatech for Basement Underpinning in Toronto
✦ Unrivaled Reputation: Aquatech boasts an impeccable online presence with a slew of 5-star reviews reflecting a history of satisfied customers.
✦ Prompt Project Initiation: Time is precious when it comes to home improvements. Aquatech is known for quick project commencement, typically 4-5 days after receiving locates. This swift action minimizes disruption to your daily routine and gets you closer to enjoying your newly transformed space.
✦ Lifetime Transferable Warranty: Our services come with the assurance of a lifetime transferable warranty, so the quality and care we put into your home today are guaranteed for tomorrow and beyond, adding peace of mind and value.
✦ Competitive Pricing: We understand the financial commitment involved in basement renovations. Aquatech promises not just excellence but affordability, offering to match competitor pricing.
Save With Our Waterproofing Offers
Price
match guarantee
Get a lower quote from any licensed Ontario waterproofing contractor and Aquatech will match it: same scope, same materials.
$300 Off
Waterproofing Services
Save $300 on waterproofing projects over $12,000, ask your estimator to apply the discount at your free consultation.
lifetime
transferable Warranty
Enjoy peace of mind with long-term protection. Our systems are built to last and fully backed by warranty.
FINANCING AVAILABLE
IN Toronto
Our Basement Underpinning Process
Because underpinning involves excavating beneath your home’s existing foundation, every project follows a strict, sectional four-step process designed to keep your home structurally supported at every stage, never all at once. From the initial engineering assessment to final city inspection, each phase is completed and cured before the next begins. Here’s exactly how it works.
1. Structural Assessment and Engineering Review
A licensed structural engineer evaluates your foundation, soil conditions, and the underpinning method best suited to your home before any work begins.
2. Sectional Excavation
Rather than excavating the entire foundation at once, work proceeds in small alternating sections to keep your home structurally supported throughout.
3. Pouring New Foundation Footings
Reinforced concrete is poured beneath each excavated section, extending your foundation to its new, lower depth.
4. Curing, Finishing, and Final Inspection
Once new footings fully cure, the remaining sections are completed, the new floor is laid, and the city conducts final inspections to confirm the work meets code.
6 Benefits of Basement Underpinning For Your Toronto Home
01
Adds Real, Code-Compliant Living Space
Unlike surface renovations, underpinning creates genuine ceiling height that meets building code for livable space.
02
Increases Home Value
Legal additional square footage, especially a rental-ready basement, is one of the highest-return renovations available.
03
Strengthens Your Foundation
The process reinforces your foundation’s structural integrity at the same time it adds space.
04
No Need to Expand Your Footprint
You gain space downward, not outward: no lost yard, no zoning fight over an addition.
05
Solves Low-Clearance Problems Permanently
Once underpinned, your basement’s height is a permanent structural fact, not a workaround.
06
Opens the Door to Rental Income
A properly underpinned basement can meet the code requirements for a legal secondary suite.
Do I Need a Permit for Basement Underpinning in Toronto?
Yes: underpinning always requires a permit, since it involves structural changes to your foundation. This isn’t optional or situational the way it can be for minor waterproofing repairs; any project that alters your foundation’s depth or structure needs City of Toronto Building Division approval and, typically, a structural engineer’s review. Aquatech manages the full permit process for you, from application to final inspection.
