Stop settling for a dark, cramped basement and unlock your Toronto home’s hidden square footage. Since 2009, IcyReno has specialized in reinforcing aging foundations and deepening basements to create safe and legal living spaces that withstand the GTA’s unique soil shifts.
Why Choose Us?
Basement underpinning in Toronto is a highly technical job with little room for error. One wrong move can affect your neighbouring home, which is why understanding how underpinning or basement lowering interacts with adjacent properties is critical.
Toronto homes often face foundation issues due to aging construction, soil shifts, or previous water damage. Addressing these problems can also involve additional services such as basement waterproofing or upgrading drainage systems, especially if early signs point to deeper structural issues. Not sure what to look for?
Common reasons homes need underpinning include:
By tackling these issues early, homeowners can protect their property value, create usable basement space, and avoid costly repairs later.
Toronto homes often show subtle warning signs before serious foundation issues develop. Recognizing them early can prevent costly repairs and ensure your basement remains safe and functional. Experienced underpinning contractors in Toronto can help assess and address these issues before they worsen.
Cracks in walls or floors: Stair-step, diagonal, or expanding cracks may indicate foundation movement. See how to Tell if Your Foundation Needs Reinforcement
Sloping or uneven floors: Tilted floors suggest settling or structural shifts.
Bowing or leaning foundation walls: Signs of lateral soil pressure requiring professional assessment.
Water pooling or persistent dampness: Moisture can weaken foundations and may call for waterproofing.
Settlement after renovations or added load: Changes to your basement may highlight the need for underpinning.
Addressing these signs promptly with professional underpinning solutions can safeguard your home’s structure, prevent damage to neighbouring properties, and maintain long-term stability.
At IcyReno, we serve areas like Toronto, Etobicoke, North York and Scarborough delivering high-quality underpinning and foundation stabilization services at competitive prices. Our pricing typically ranging from $70 to $150 per square foot. However, several factors can influence the final cost of your project.
The cost of underpinning isn’t one-size-fits-all. Here’s what usually impacts pricing:
That said, our rates are some of the most reasonable you’ll find in the city – especially when you weigh the quality of work against the price. It’s that sweet spot where cost meets real, long-term value. You’re not overpaying and you’re definitely not cutting corners either
Basement underpinning, also referred to as foundation stabilization, is a construction process used to strengthen and reinforce an existing foundation. It involves excavating soil beneath the structure and adding concrete or other materials to extend the depth and width of the foundation, ensuring additional support. This service is vital for Toronto homes facing foundation issues such as settling, cracking, or instability due to soil movement, or for homeowners planning to lower their basement floor to increase ceiling height and usable space. Homeowners
The benefits of reinforcing the basement includes:
Underpinning a Toronto basement is a precise, engineering-driven process that reinforces your foundation, increases headroom, and ensures your home remains safe – all while respecting the unique challenges of homes in Toronto, Etobicoke, North York, and Scarborough. Here is our basement underpinning process:
Engineering & Permits: A licensed engineer evaluates your foundation and prepares detailed drawings. All work is permit-approved to meet Toronto building codes.
Site Preparation: We protect your interiors, mark utilities, and secure access for a safe work environment.
Excavation & Temporary Support: Soil is removed in controlled stages, with temporary shoring to maintain structural stability.
Underpinning Installation: Concrete footings or bench footings are poured section by section, strengthening your foundation precisely.
Waterproofing & Drainage Integration: Where needed, we upgrade drainage and install waterproofing systems for long-term protection.
Finishing & Inspection: Backfill, new slab, and a final inspection ensure your basement is safe, dry, and ready for living or storage.
This structured approach guarantees safety, code compliance, and long-lasting results, giving your home a solid foundation for years to come.
The timeline for a basement underpinning project usually ranges from 4 to 8 weeks, depending on the size of your basement, the depth of lowering required, the complexity of the work, and any additional services like waterproofing or structural reinforcements. Smaller or more straightforward projects may take closer to 4 weeks, while larger, more complex projects can stretch to 8 weeks or more.
Keep in mind that permitting and inspection stages (required by Toronto bylaws) can add some time as well. At IcyReno, we always build a detailed schedule with our clients upfront so you know exactly what to expect and we keep you informed at every step to avoid surprises.
No, proper underpinning does not devalue your home. In fact, when it’s done by licensed, experienced contractors, it usually increases the value. Buyers see a reinforced foundation, improved structural safety, and the potential for a taller, usable basement space.
What can affect value is poor workmanship or unpermitted work, which is why choosing a professional, insured company matters. With the right team, underpinning becomes an investment that strengthens your home and boosts long-term resale appeal.
In many cases, yes, you can live in your home during basement underpinning but it depends on the scope of work and the layout of your house. If the project area is well contained and there’s a safe, separate living space, staying home is possible. However, underpinning is a major construction process that involves digging, concrete work, and structural adjustments, which means there will be noise, vibrations, dust, and limited access to parts of your home.
For larger projects or if safety could be compromised (especially if structural supports need temporary removal), we might recommend temporarily relocating for a portion of the work. We always prioritize your comfort and safety, and we’ll discuss all options with you before work begins so you can plan ahead with confidence.
Yes, there can be safety concerns related to underpinning such as the risk of collapse or structural damage due to poor workmanship. It is incredibly crucial to hire an experienced and reputable company who adheres to safety regulations in order to avoid any potential risks. As one of the largest basement underpinning companies in the GTA, we take safety incredibly seriously.
Yes, you can underpin a finished basement. The flooring, drywall, and finishes are removed only in the areas where work is needed. Underpinning focuses on the foundation walls and footing, not the cosmetic finishes, so it can be done even if your basement is fully completed.
Just keep in mind that some sections of the finished space will need to be opened up for access, and those areas can be restored after the underpinning is complete. With a skilled team, the process is controlled, safe, and designed to protect the rest of your finished basement.
Properly permitted and engineered underpinning can significantly boost resale value by creating 100% usable living space. In high-density areas like Leslieville or The Annex, turning a crawlspace into a legal secondary suite or rental unit often provides a return on investment (ROI) that exceeds the construction cost.
Only if waterproofing is neglected. At IcyReno, we integrate internal weeping tiles and moisture membranes as a standard part of the underpinning process. Lowering your basement is actually the best time to upgrade your drainage system to handle Toronto’s high water tables.
In semi-detached Toronto homes, your underpinning can affect a shared wall. We use staged excavation (working in small 3-foot sections) to ensure the structural integrity of both properties is never compromised. We also manage the “Neighbor Agreement” forms required for many local projects.
Trusted Contractor Since 
