
Mississauga Basement Underpinning Contractor
Basement underpinning is a popular choice when it comes to adding more living space to your home. When done right, it will give you higher ceilings in your basement and greatly improve your home’s value. If done wrong, it can leave you with serious foundation problems.
MAGCOR’s expert underpinning specialists have the experience and equipment needed to safely carry out a basement lowering project for your home or office space. We’ll thoroughly assess your basement or crawlspace, let you know about any potential pitfalls, and walk you through your lowering options. Our award-winning team not only handles the heavy lifting of demolition and restoration, but they also can help you manage the permit process, get your inspections done on time, and liaise with structural engineers and architects.
Whether you’re looking to expand your usable living space in a tight real estate market or want help dealing with things like a mouldy basement that regularly leaks, choosing the right underpinning contractor is crucial to getting a good outcome when underpinning your Mississauga home. It’s easy to be tempted to turn this into a DIY project, but underpinning foundations should only be done by qualified, experienced professionals.

What is Basement Underpinning?
Put simply, with basement lowering, we’re taking out your old foundation, digging down to create more space, and then building you a new, stronger foundation. You can underpin a portion of your basement to deal with an area that’s been structurally compromised or lower the entire room to create a comfortable living space to enjoy. Basement underpinning solves a wide range of problems, like perpetual mould, foundation cracks, subsidence, and flooding. Older homes may need to repair a failing foundation, or you may find your current foundation simply isn’t strong enough to support an additional story.
The basement underpinning process takes precision, experience, and attention to detail. Your home must be assessed and a plan must be created to adequately support the structure while you remove the old foundation and pour new footings. You need permits, a structural engineering report, architectural drawings, and periodic inspections to ensure everything is up to code.
Benefits of Basement Underpinning
Easier, More Affordable Option to Increase Usable Living Space
Regardless of the reason you decide to consider whether or not an underpinning foundation project is right for you, there are some key benefits you should be aware of. Real estate prices are creeping up every year, and moving may not be an option for many people. If your family has outgrown its starter home or you’re looking for a mother-in-law suite to rent out or comfortably house an elderly parent, the first thing that pops into most people’s minds is installing an addition.
An underpinning basement project gives you the same outcome at a much lower price. Permits and materials are less expensive, because you’re not building a whole new structure and tying it into your existing home. You’re simply modifying an existing structure and making it stronger.
Increase Property Value and Get a Better Return On Your Investment
Strengthen Your Foundation
Upgrade Your Waterproofing to Prevent Damage
Many older waterproofing methods can cause damage, weakening your foundation and basement walls. Properly installed modern waterproofing will limit water damage to your foundation, home, and possessions. The first step in effective waterproofing is to find the source of your leak problem and prevent it from permeating the concrete that makes up your footers, foundations, and concrete walls. Concrete is a porous material, and moisture will, over time, pass from the outside to the inside of your basement. Another perk of upgrading your waterproofing is that it may get you rebates or financial incentives from your local government agencies.
Upgrade Outdated Plumbing, Wiring, and Insulation
During the basement lowering process, your space is laid bare, exposing plumbing pipes, drainage systems, and wiring, making it the perfect time to upgrade outdated items. Not only will you see an improvement in how things work in the basement, but you’ll also benefit from a home value bump. Prospective clients appreciate knowing these crucial systems are modernized and will not become an expensive money pit six months after moving in. You can also add attractive options like radiant floor heating, check valves that prevent sewage from backing up into your basement, and improve insulation to cut down on heating costs.
Boost Ceiling Height and Get Better Lighting
The Permit Process Can Be Less Expensive and Complicated Than Building an Addition
The permit process is faster and less expensive for underpinning compared to getting permits for building an addition to your house. In Mississauga, you can expect to pay around $2,200 for a permit and get it approved in about three weeks. Construction permits vary a lot, depending on how complex your project is. This makes the approval time much longer and can cost you somewhere between $4,000 to $10,000 to get your permits and drawings done.
Basement Underpinning Process

Why Choose Us for Mississauga Basement Underpinning?
What makes MAGCOR Demolition stand out from other underpinning companies? We have the depth and breadth of experience you need, the equipment and technology to get the job done right the first time, and the skilled technicians capable of handling even the most complicated basement lowering project. We built our reputation on a history of quality work, open communication, and fair pricing
- Award-winning Demolition Contractors
- Licensed and Insured
- High-Quality Materials
- Modern Technology
- Industry Best Practices
- Competitive Prices
- Unbiased Advice
- We Warranty Our Work
About Mississauga
Mississauga sits along the shore of Lake Ontario, bordering the western side of Toronto. As of 2021, Mississauga had approximately 717,000 residents, making it the third most populated city in Ontario.
Mississauga covers an area of about 292 square kilometres, including 13 kilometres of Lake Ontario’s shoreline. On average, Mississauga experiences about six snow-free months per year, with occasional snowfall in May and October which rarely sticks to the ground. Mississauga is located in plant hardiness zone 6B, meaning its ground freezes frequently.
Underpinning services can be performed in Mississauga almost year-round, except in the case of inclement weather. Permits for underpinning are available in person when visiting a Municipal Service Center, or by applying online through the ePlans website.
Remember to supply information such as:
- The cost to perform the work
- Your project duration
- Project drawings and plans
- Site or scale drawing to determine property setback requirements

Is Basement Underpinning Expensive in Mississauga?
Typically, your contractors will analyze your property’s size (in square footage) and the linear footage of its basement walls in order to determine the total cost of the project. However, some contractors may choose to estimate the project cost through stages, including:
- Accumulating drawings, permits, and other paperwork
- Inspecting the condition and composition of the soil
- Preparing the Site
- Wall underpinning
- Basement slab work
- Demolition
- Crack Repairs
- Remediation and site cleanup
You will need to hire a professional architect or structural engineer for the permit application process, as detailed drawings will be required for your permit. These experts in underpinning can also provide other valuable documents, such as the size of your existing concrete pad, as required by Mississauga’s Building & Construction Authority.
Typically, the cost of these drawings and the entire process ranges from $2,500 to $3,500. However, depending on the nature of the project, this amount can easily increase to $4,500, or more.
After you receive your drawings, underpinning experts can evaluate your project and recommend a course of action.
Homeowners and business owners in the Mississauga area should budget for about $80.00- $350.00 per square foot on average for an underpinning project. Most underpinning projects performed in Mississauga will cost between $15,000 and $30,000.
What Variables Affect the Cost of Underpinning in Mississauga?
Some of the most common variables that can affect the cost of underpinning in Mississauga include:
- The Underpinning Company You Choose
- The Location of Your Property
- The Type and Condition of the Soil
- The Length and Width of Your Basement
- Accessibility to the Site
- Method of Underpinning Used
- Structural Materials and Quantity Required
Generally, these variables will have the biggest impact on your total cost of underpinning.
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