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Cost of Underpinning Basement in Toronto

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Basement Underpinning Cost in Toronto

Have you been getting worried by the fractures and heaving on your floors that can? You shouldn’t. Most homeowners experience situations where the doors get blocked by raised floors, and splitting appears on the floors and walls. While these signs may signal problems with the foundation, they aren’t big enough to cause you sleepless nights. You don’t have to dig up the entire foundation or break down walls to fix them. A good repair alternative will be underpinning, which allows you to lower the footing and strengthen the foundation.

Underpinning may seem simple enough, but its main disadvantage is that it isn’t usually covered by insurance. You will have to pay for it from your pocket, which can be a little costly. However, ignoring the heaving and cracking on your foundation can only get worse, resulting in additional expenses. You can find a contractor willing to work with your budget or give you a convenient payment plan. Whatever the cost challenges, try to get the problem fixed as soon as possible.

 

Cost of Basement Underpinning and Related Services in Toronto

The cost of basement underpinning in Toronto varies based on factors such as building size, depth of underpinning, type of soil, and accessibility. On average, homeowners can expect to pay between $80 and $350 per square foot for underpinning services. This means that for a 1,000-square-foot basement, costs could range from $80,000 to $350,000.

Additional Services and Their Estimated Costs:

Excavation and Concrete Work: Preparing the site using appropriate excavation tools and performing necessary concrete work can add approximately $15,000 to $50,000 to the project, depending on the scope and materials used.

Structural Engineering and Design: Engaging a structural engineer for assessments, creating an underpinning design package, and obtaining permits typically costs between $2,500 and $4,500.

Foundation Repairs: Strengthening existing foundations, including wall underpinning, may cost around $350 to $450 per linear foot, depending on the extent of the repairs needed.

Plumbing System Adjustments: Modifying or upgrading plumbing systems, such as installing a sanitary ejector pump, can vary widely in cost based on the complexity of the work required.

Drainage and Waterproofing: Implementing solutions like weeping tile installations to prevent water damage can add to the overall expense, with costs depending on the specific system and property requirements.

Given the significant investment underpinning entails, it’s advisable to consult with experienced professionals to obtain detailed quotes tailored to your property’s specific needs. This approach ensures accurate budgeting and a well-executed underpinning project.

 

Why is it important to underpin your basement?

It’s normal to outgrow the size of a house with time. The house you started living in when you were single may no longer be comfortable when you have a family. As your needs evolve, you may want to explore different solutions to enhance your comfort. A good option is always to expand the house instead of moving to a new place. For instance, you can consider lowering the basement flooring to create more room in your basement to accommodate your increased needs.

Compared to other options such as buying a new house and relocating, lowering the basement is cheaper and convenient. The job involves remodelling your basement, which also allows you to make any other design changes you like. However, like other construction processes, remodelling your basement isn’t an easy task. You have to research the appropriate methods to be well-prepared. Find out the steps that will be involved to determine how long the project will take. You will also be in a better position to follow the progress and understand the phases as they are completed.

Why is it important to underpin your basement?

 

Information you need before lowering your basement

There is a lot of information you need to understand about underpinning before undertaking the project.

  • You will need drawings, and they must be done on the right sheets. They must also be drawn to scale, with all the dimensions covered. Make sure they are signed and dated properly.
  • You need qualified designers to handle the drawings. Make sure they include their name, signature, qualification identification number, and registration number on the drawing sheets. An official stamp should also be included. All these will help you with accountability and responsibility if the need arises.
  • Always have a soft copy of the documents drawn or written during the design process. Make sure the forms, reports, and drawings get to the local authorities that deal with building codes in soft copy form.

We are the right underpinning contractors to guide you through the processes. We have handled numerous underpinning projects over the years and have learned everything about such ventures. We will help you understand what is required to ensure you don’t run into legal trouble.

 

Documentation

You will need several documents in addition to the drawings. These are mostly plans that must be filled properly and submitted to the relevant authorities before the underpinning begins.

 

Site plans

These are produced after a survey that shows property lines and the lot area is done. The plan will show the dimensions of the existing and the proposed changes. It should also have potential issues that could arise on the site, especially those connected to adjacent buildings and other property lines.

Site plans

 

Foundation plans

These will show the areas where the underpinning will be done. They should have all the information of the current and proposed foundation and details of the supporting structures and framing locations.

Another important feature of the underpinning document is the project phases. They must be outlined properly, with each stage labelled and the proposed achievement indicated. It will also be better if the document shows the distance between your basement and the adjacent properties, including the depth of the footings.

Foundation plans

 

Floor plans

The floor plans must have full dimensions and show how each section is being used. There should also be locations of safety features, such as plumbing systems and smoke and carbon monoxide detectors. The plan should also have information about exterior partitioning and structural framing.

Floor plans

 

Sections

Part of the information you provide should be about sections such as:

  • Cross-sections of the floors, walls, and roof. Both the current and proposed specifications should be available.
  • Details of the foundation footing and walls, and the height above the basement floor.
  • Floor to floor heights and ceiling heights.
  • Specifications of the stairs, handrails, guards, and landings.
  • The depth of the proposed underpinning.

Every part of the sections and the plans must be precise. The city authorities will use the information you provide to authorize or reject the underpinning. Inaccurate information could indicate that the project doesn’t meet the building codes.

 

Construction details

Another important document is about the construction. It includes information about the building materials to be used, details of how the guard rails are connected, wall, floor, and roof assembly specifications.

 

Factors which influence on the final underpinning basement cost

Underpinning processes have evolved over the years, and that has eliminated concrete as the only solution. Although the process of injecting the compound still involves drilling holes into the ground, different resins can also be used as the solution that binds the soil together. By binding the soil under the foundation and the surrounding areas, it provides a compact surface for the foundation. The soil will not expand and contract as much, which will keep cracks at bay.

The type of solution you choose should depend on the complexity of the issue at hand, which will also affect the cost. The state of your house can also affect the amount you end up paying for underpinning. For instance, if the surrounding areas are in good condition and don’t need repair, it will take a shorter time to complete the job, which might reduce the cost. Additional factors that may affect how much you spend on the project are:

location

Location

Type of Soil

Type of Soil

Footing

Footing

Materials required

Materials required

Accessibility

Accessibility

The only way to determine the real cost is by contacting contractors. Our team will give you quotations for the resin and concrete and help you consult with a structural engineer. We will work together with the engineer to ensure you get excellent results within a practical duration.

 

Insurance and Financing for Underpinning

Homeowner’s insurance typically doesn’t cover underpinning unless caused by a covered peril like a flood or earthquake. However, contractor insurance may cover workmanship issues.

To ease the financial burden, many contractors offer financing plans with manageable payments, including low-interest loans or home equity financing. Investing in foundation support now can prevent costly repairs later. Always consult professionals to explore the best financing options for your project.

Average cost of underpinning basement

Adequate research before starting an underpinning project is always crucial. It enables you to handle the project easily and prepares you for potential hurdles that could cause problems. Apart from the research, you must also think about how the additional space will influence your life. Another essential consideration is cost. Talk to a structural engineer first and have them collaborate with your contractor to create a functional and affordable plan. We will let you choose whether you want to hire an engineer independently or work with us. Keep in mind; you will need around $2000 for an engineer to draw.

Other factors that will affect the average cost are the depth, access, and square footage. Based on the magnitude of an underpinning project, there could also be other actors that increase the cost. The price of such a project is also usually estimated on linear footage. For example, most contractors in Toronto will charge between $350 and $450 to excavate one linear foot.

Although underpinning is costly, it is the best way to give your home a new appearance and improve its functionality. It also affects the structure of the house and must be done right the first time. Hire contractors that understand the effects on internal structure and will not take chances with your property.

Our company is one of the most reputable in the region, and we have both liability and underpinning insurances. Our specialists will take good care of your investment to ensure you get results that will improve the aesthetics of the house and strengthen the internal structures.

Why is it important to underpin your basement?

 

Benefits of underpinning basement

  • Easy access to the home

If you have been thinking about upgrading the essential systems in your house, you can easily do so during underpinning. The level of accessibility you will get will help you save a lot of money in the future.

Having such a remodel allows your contractor or engineer to inspect the hidden sections of the house to ensure they are still functioning properly. The contractor will inspect plumbing, insulation, waterproofing, and electrical systems and determine their condition. They can then replace damaged systems easily.

Our contractors will inspect the interior elements of the house structure and replace the ones that are no longer functioning optimally.

  • Enhanced lighting and ceiling

If you own an older house, the chances are that you have low ceilings, wasting a lot of usable space. Low ceilings have a way of making a room feel and look smaller than it is, which can make you uncomfortable.

Underpinning gives you a chance to increase your ceiling height. It also allows you to improve your lighting fixtures and make the room brighter and more attractive.

Additionally, you will be able to move walls and transform the space into whatever you want to add extra usable space to the basement. You can make it a family room, game room, or studio apartment.

  • Solves structural issues

Several factors such as dense soil, weather conditions, and poor construction can cause structural problems on any property. Underpinning allows you to identify and fix those problems without having separate excavations and repairs. You get a chance to make your house structure more stable and implement measures that will prevent problems in the future.

Improving the structural integrity of your house also increases its value. You will be able to sell it at a higher price or take pride in knowing your property has a high value. Also, a strong structure will ensure you and your loved ones remain safe.

  • Cost-effectiveness

Whatever type of home remodelling you want to do, the underpinning will help you complete it faster. For instance, if you want to have an open design in the basement, you will be able to knock down walls without incurring extra costs. Similarly, servicing the insulation or plumbing systems will be easier. You will be able to repair, replace, or install the systems at a lower cost than what you would spend on each of those projects individually.

Given all the benefits you can get from underpinning, in addition to the extra space, it is the least expensive home remodelling option. By not having contractors over on separate occasions, you will be able to minimize the disruptions as well.

 

FAQs About Basement Underpinning Cost in Toronto

Generally, underpinning is not covered by standard home insurance plans, meaning homeowners need to budget for this expense out-of-pocket. However, securing the necessary care and improvements can prevent further damage and additional costs down the line.

Beyond fixing structural issues, underpinning can increase subterranean living space, enhance property value, and improve home safety. It provides the opportunity to remodel and maximize the basement’s potential, often yielding cost-effective renovations when compared to purchasing a new property.

Proper documentation includes site plans, foundation plans showing the work scope, and any necessary permissions from city authorities. Acquiring accurate drawings with detailed specifications and legal approval ensures a smooth and compliant underpinning project.

Yes, several cost-effective alternatives exist for increasing basement space or stabilizing foundations. Options include:

  • Bench Footing (Benching) – Extends basement height without lowering the foundation but reduces floor space.
  • Slab Jacking – Uses polyurethane foam injection to lift and level sinking concrete floors.
  • Mass Concrete Pour – A traditional yet reinforcing structure method using large amounts of concrete for stability.
  • Beam or Piling Method – Supports existing foundations with piers or piles, reducing excavation costs.
  • Epoxy Injection – Repairs foundation cracks without extensive digging.
  • Crawlspace Transformation – Converts a crawlspace into a usable basement using concrete slab underpinning.

Each method varies in cost and suitability, so consulting a professional can help determine the best solution for your property.

 

Reviews of Our
Cost of Underpinning Basement in Toronto Services

Direct Basement Waterproofing Toronto place picture
5.0
Based on 307 reviews
Callum Tyrrell profile picture
Callum Tyrrell
3 months ago
friendly team, very efficient and quick. Thank you.
IDK profile picture
IDK
3 months ago
excellent customer service and great workmanship no more water issues after heavy rain
Sara Shinwari profile picture
Sara Shinwari
3 months ago
THE MILLION profile picture
THE MILLION
3 months ago
it’s a great company with great workers i highly recommend
Raddish Moment profile picture
Raddish Moment
3 months ago
Quick response and fast repair work. The leak hasn’t returned since.👍
Chris Ho profile picture
Chris Ho
4 months ago
Working with Jack and the team were great. They were all friendly, answered all questions and responds very quickly. Jack in particular is very communicative and ensures all needs are met and questions are answered. The team that did the job worked quickly and ensured the area was clean afterwards. Highly recommend!
Faye profile picture
Faye
5 months ago
We had a great experience working with Direct Waterproofing on our exterior waterproofing project. Terry, the project manager, was very knowledgeable and took the time to clearly explain the situation and the recommended solution. The estimate was accurate and the work was completed in two days as expected. The two-person crew arrived on time each day and worked efficiently throughout the project. They were professional and the finished work looks very well done. Overall, we're very happy with how everything turned out. Thank you, Terry and Direct Waterproofing Team!
Andrew Glavac profile picture
Andrew Glavac
7 months ago
We recently had waterproofing work done in our basement by Direct Waterproofing, and we’re truly so pleased with the entire experience. Terry Lisevych and his crew were not only highly professional, but also friendly, respectful, and clearly took pride in their work. The quality was excellent, everything was completed on time, and they kept the job site spotless from start to finish. From the very beginning, Terry was reassuring and took the time to explain everything clearly, which gave us a lot of confidence moving forward. He truly delivered on everything he promised, and the results speak for themselves. What really stood out was Terry’s knowledge, honesty, and straightforward approach—it made the whole process feel easy and stress-free. It’s clear he genuinely cares about doing the job right. We’re very grateful for their work and would wholeheartedly recommend Direct Waterproofing to anyone looking for reliable, high-quality service.
Shadan El Shafei profile picture
Shadan El Shafei
7 months ago
Excellent service from start to finish. The inspection was very thorough and the technician answered all my questions patiently. The repair crew arrived on time and worked hard the entire day. They were respectful of my property and made sure everything was clean when the job was finished. After the waterproofing work was completed, the difference was immediately noticeable. Even during strong rainstorms the basement stays completely dry.
Valerie Stubbins profile picture
Valerie Stubbins
9 months ago
We had a great experience with Direct Waterproofing. We contacted Terry on January 5 and he came out the very next morning to assess a foundation crack in our 1980s home. He provided a detailed quote later that same day. Despite very cold weather and snow to clear, Thomas and John completed the repair on January 19 after the utility lines were marked. They did a great job and left the area clean. Terry provided photos taken throughout the repair and a lifetime warranty. We also used Direct Waterproofing in 2024 for a window well drainage repair and another foundation crack with the same high-quality service. Highly recommend.
Mr T profile picture
Mr T
1 year ago
Thank you Jack ,Terry & workers Nick and Vasyl. Quality materials & quality work. Attention to detail. Great team.
Response from the owner
1 year ago
On behalf of Terry and Jack, we want to thank you for such a great testimony. It has been a pleasure working for you.
Avin Athari profile picture
Avin Athari
1 year ago
We had a great experience with this company for our waterproofing project. Everything was completed on time and exactly according to plan. Throughout the process, Greg, Terry, Thomas, and Max were all friendly, professional, hardworking, and a pleasure to work with. Thank you for making the process so smooth! We really hope their solution will keep us worry-free for the long run.
Response from the owner
1 year ago
On behalf of Greg, Terry and the crew, we want to thank you for such a great review. Your experience is very important to us. It has been a pleasure working with you.
Paolo Tersigni profile picture
Paolo Tersigni
1 year ago
I couldn’t be happier with the results. Terry and his team were professional, efficient, and clearly experienced. From the initial inspection to the final walkthrough, they explained every step and made sure I understood the process. The work was completed on time, with no mess left behind, and most importantly — no more water issues! I feel confident and secure knowing my home is protected. Highly recommend to anyone looking for quality waterproofing!
Response from the owner
1 year ago
Dear Paolo, thank you so much for such a great testimony. It has been a pleasure working with you.
John Hughes profile picture
John Hughes
1 year ago
Excellent work at a reasonable price. They job started on time in the morning and completed the work by 6.00pm thanks to an Incredibly hard working team. Project manager Jack could not have been more helpful.
Response from the owner
1 year ago
Thank you, John, for your positive feedback! We're delighted to hear that you found our work excellent and reasonably priced. It's fantastic to know that the project started on time and was completed efficiently by our hardworking team. Jack always strives to be as helpful as possible, and we're glad he made a positive impact on your experience. If you need any further assistance in the future, please feel free to reach out.
Alison LoBianco profile picture
Alison LoBianco
1 year ago
Would highly recommend Direct Waterproofing. Terry and his crew were professional, worked fast and did a great job. Fair pricing for interior waterproofing- sump pump and bench installation. Terry took the time to explain all of our questions. We plan to use them again to install a back flow valve. Just had the back flow valve installed. Terry and team were quick and professional. We would highly recommend and would definitely use again for any future waterproofing needs!
Response from the owner
1 year ago
Thank you, Alison, for your glowing review and recommendation! We're delighted to hear that Terry and the crew provided you with professional and efficient service for both the interior waterproofing and backflow valve installation. It's fantastic that Terry took the time to address all your questions, ensuring you felt informed throughout the process. Your satisfaction with our fair pricing and quality work means a lot to us. We look forward to assisting you with any future waterproofing needs.
Suzana Majcen profile picture
Suzana Majcen
1 year ago
Direct Waterproofing company was amazing. From the 1st interaction, where Greg came to see my basement leak issue, to final day when it was completed. Greg was able to provide a quote right after he inspected the outside and inside the house. Their price was very competitive. They arranged for the "locate service" by City of Toronto. They came when they said they will come. When they discovered that what was under the porch was not what they at first thought, they quickly came up with a second solution, that was still close to the initial quote. The whole activity was lead by Terry. I don't know who the initial crew was, but second crew was Roman and Walter. They worked very hard, and were super careful and tidy. They dug over 25 feet around the front and side of the house, waterproofed the foundation, added weeping tile and cleaned up really well. They also dug a big hole for a sump pump in a tiny space of the furnace room corner without any issues. Now you can't even tell there is a sump pump there. Terry also came a few days later to do some touch ups! They were awesome! I would recommend them to anyone that is looking for a great experience and good workmanship!
Photo from customer reviewPhoto from customer reviewPhoto from customer review
Response from the owner
1 year ago
Dear Suzana, on behalf of Terry, Greg and the crew, we want to thank you for such an amazing review. It has been a pleasure working for you.
Daniel Batista profile picture
Daniel Batista
1 year ago
Great service Jack explained everything very satisfied with the work. Thanks to your team .
Response from the owner
1 year ago
Thank you, Daniel, for such a great feedback. It has been a pleasure working with you.
David M profile picture
David M
1 year ago
The Directwaterproofing team were amazing, got right to it and worked till it was done. They were hardworking and great to get along with. Thanks John, George, Faro and Terry.
Response from the owner
1 year ago
Dear David, on behalf of Terry and the entire Direct Waterproofing Team, we want to thank you for such a great testimony. John, George and Faro are a very hardworking guys and your positive review will benefit their motivation. It has been a pleasure working with you.
Steven Indrigo profile picture
Steven Indrigo
1 year ago
Walter, Roman, Dima, and Terry from Direct Waterproofing did an excellent job on our exterior waterproofing and sump pump installation. It was a challenging job, as they had to undermine our back extension and work in a narrow alley with little room to move. They were professional, polite, skilled, and hard working. Highly recommend.
Response from the owner
1 year ago
On behalf of the crew and entire Direct Waterproofing Team, we want to thank you for such a wonderful feedback. It has been a pleasure working with you.
Jody Malone profile picture
Jody Malone
1 year ago
This company is FANTASTIC. Terry and his team worked so hard every day. And to finish the job, they returned on the weekend. His team members are strong and physically fit. Terry returns all calls promptly and explains everything respectfully and comprehensively. I recommended them to a friend and she found the exact same thing. They know what a good hard day's work looks like! *****
Response from the owner
1 year ago
Thank you, Jody, for such a great review. We really appreciate it as it motivates us to continue deliver a great service and improve along the way. It has been a pleasure working with you.
The team ensured that everything was correctly sealed and effectively repaired the leak. Even with the intense downpour, my basement is now totally dry. The fact that they cleaned and organised everything afterwards is the finest part. I heartily suggest them for any leaky basement problems!
N Mosk profile picture
N Mosk
2 years ago
Professional crew, timely service, and no more leaks.
Olga Shmyrina profile picture
Olga Shmyrina
2 years ago
Great service! Our basement is dry even after heavy rains. Highly recommend!
Ella profile picture
Ella
2 years ago
Prompt service and high-quality work. No more worries about water damage. Thank you.
Michael Mao profile picture
Michael Mao
2 years ago
Job was well done and Terry assisted and explained to me through out the process from the beginning to the end.
Tracy Cheng profile picture
Tracy Cheng
2 years ago
I don’t typically write reviews but I’ve had a few experiences with Direct Waterproofing now and wanted to call Terry and his crew out for their great work. They are efficient, clean, and Terry is very communicative and responsive. DW completed the exterior and partial interior waterproofing on our semi and they were very respectful of the space in always keeping it tidy and clean. And it was nice to have people show up when they say they would and finish on time. Shortly after, we had an issue with dampness in our basement and Terry came out immediately to check on the issue (turned out it wasn’t related to the waterproofing). So when it came time to filling the cement in, I didn’t hesitate reaching back out to Terry versus looking for a different company to do the work. They were able to fit the job in shortly after I reached out and they’ll be coming by again to help reroute my sump pump line. All in all, I wish all other contractors were as responsive and easy to work with as Terry.
I had a water leakage issue in the basement after every rain for the last 2 years, but never found the root cause. This time I contacted Direct Waterproofing. Terry came in and checked and provided in depth plan on how to fix the foundation crack issue from outside. He was continuously in touch with me all these days and made me feel confident with the choice of solution seeing the cost involved (C$2000). And today, TERRY and his 2 very hard working team mates, JOHN and THOMAS, came in and dig the whole soil almost 7-8 feet, did all the treatment and re-filled everything in just 8 hours. I was there watching the whole process, and I can say I felt very satisfied with the hard work they put into this project. The price was worth it, but most importantly I got peace of mind now. I would highly recommend Terry and his team for any waterproofing work. They are very genuine and will not try to sell you unnecessary services. And they also give 25 years warranty.
Wolston Lobo profile picture
Wolston Lobo
3 years ago
Terry from Direct waterproofing is one of the best professionals I've met. And I don't say it lightly. We needed a sump pump and backup battery pump + discharge pipe. Terry took the time to brainstorm ideas on where the discharge pipe should go so we don't cycle back the water into our sump pit. Before installation he took out a lot of garbage that was in the sump pit. He took out plant roots that had grown from underground. Terry not only installed both pumps and a discharge pipe but came twice and made sure we got everything needed to receive the city rebate. After each work was done he took the time to clean the debris as well. This is what I call a true professional. You can tell pretty quickly that Terry really cares about the customer. Would highly recommend. 5 stars!
PAUL W. profile picture
PAUL W.
3 years ago
Thank you to Terry and his wonderful team at Direct Waterproofing . They fixed our water issue in the basement with amazing professionalism. They got the job done and was finished in a very good amount of time . They made sure everything was tidy and finished right . The cost was also reasonable . As you know when you have water coming into your home it can be very upsetting, but Terry was very reassuring and made the process very easy and positive . Thank you Terry and crew ! Christina and Paul
Matthew McKay profile picture
Matthew McKay
3 years ago
So happy to be able to write another 5 star review for Direct Waterproofing! The team had done some some work for me a couple of years ago (basement inside waterproofing and installing a sump pump - which has been working fabulously!) and while they were here, they applied some concrete parging around my home to seal the area between the foundation and the bottom of the home. Due to weather it had cracked a bit and when I called Terry to see if they could come back and seal it again he was more than willing to help! Although this is a very busy season for them, Terry himself came and did the job. He was so pleasant and thorough and now everything is sealed up before the winter. And … he did it free of charge! I’m very impressed with Terry and his team. Would highly recommend! Thanks!

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