Basement Underpinning
in Toronto & Ontario

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Basement Underpinning Experts in Toronto & Southern Ontario

Suppose you want to expand your home and need more space for your ideas. In that case, Waterproofing PD has a solution that might interest you – basement underpinning, also known as basement lowering or benching. This technique allows you to increase your Toronto home’s usable area by adding extra storage or living space within your property’s existing boundaries.

Specializing in basement underpinning services in Toronto, Waterproofing PD is your go-to expert for effectively utilizing your home’s lower level. This process is perfect for increasing your living space. It also serves as a solution for homes experiencing water damage due to foundation cracks, soil shifting, backups, and other similar problems. Basement underpinning is an intelligent investment, enhancing your home’s functionality and market value.

Contact us today, and let’s collaborate to design the ideal basement underpinning/lowering or benching plan for your house.

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basement underpinning

What does the basement lowering process look like?

Basement underpinning, also known as basement lowering or foundation underpinning, is a construction process aimed at increasing the depth and improving the stability of an existing basement. This method is often employed in urban homes to create more livable or functional space in the basement area or to strengthen the foundation of older buildings.

The process involves several key steps:

  • Assessment and Planning: An initial assessment of the building’s structure is crucial to planning the lowering process, ensuring it will not compromise the building’s integrity.
  • Permits and Regulations: Before beginning any work, it is essential to obtain the necessary permits from local building authorities. This step ensures that the planned foundation underpinning adheres to all local building codes and safety regulations.
  • Excavation: The soil beneath the existing foundation will be excavated in phases to a predetermined depth. This step must be done carefully and strategically to maintain the building’s structural integrity.
  • Underpinning: After soil removal, certified professionals will install new foundation elements to extend the foundation to a deeper level. Depending on the building and soil type, this can be done using various materials and methods.
  • Reinforcement: The new foundation is reinforced with concrete or steel to ensure it can effectively support the existing structure.
  • Finishing: After the underpinning is complete, the basement is ready to be finished to the desired specifications, such as adding waterproofing, insulation, flooring, and other features.



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    Basement Underpinning Services in Toronto, ON

    What is basement underpinning?

    Basement underpinning, also known as basement lowering or foundation underpinning, is a construction process used to increase the depth of an existing basement or crawlspace. This technique involves excavating the soil beneath the existing foundation of a building and then extending the foundation to a deeper level. This process increases the ceiling height of a basement, making it more usable and spacious. It also strengthens the foundation of the building, which can be crucial for older structures or those requiring stabilization.

    The basement lowering process typically involves sequentially excavating small sections beneath the foundation, followed by the construction of new foundation segments that extend deeper into the ground. This method ensures the stability of the structure during the renovation of your Toronto home.

    The team at Waterproofing PD has the skills and experience to complete the basement underpinning required for your visions to come to life.

    How much does the basement underpinning cost?

    The cost of basement underpinning can vary widely depending on several factors, including the condition of the existing foundation, the depth to which you want to lower the basement, the materials used, labour costs, and the region where you live. Generally, basement underpinning costs range from $30 to $80 per square foot.

    To give you a couple of examples:

    • For a smaller basement of 500 square feet, if you go by the base cost of $30 per square foot, the total cost would be $15,000. On the higher end, at $80 per square foot, it would be about $40,000.
    • For an enormous 1500-square-foot basement, the underpinning would cost approximately $45,000 at $ 30 per square foot. At the higher rate of $80 per square foot, the cost would increase to around $120,000.

    These are rough estimates, and the actual cost can depend on additional factors such as additional structural support, waterproofing, permits, and post-underpinning finishing work. It’s important to get a detailed quote from a professional who can assess your project’s specific requirements.

    The Benefits of Basement Underpinning in Toronto

    Simply put, basement underpinning adds space and height to your basement, fixes foundation issues and adds structural strength and stability to your home. These improvements increase the overall value of your home in Toronto, making it more user-friendly and attractive.

    Read below for a comprehensive list of the advantages and benefits of Toronto basement underpinning:

    Create Additional Useable Space

    The process of basement underpinning allows for the increase of the height of the structure and adding extra space in the basement to be used for storage, game rooms, bedrooms, offices…whatever you are dreaming of!

    Increase Foundation Strength

    For foundations that were poorly constructed to begin with, or ones that have suffered significant damage over the years, basement underpinning can be completed to create a more stable foundation. This type of reinforcement can help maintain the structural reliability when adding a second floor to your house, as the foundation will be equipped to carry the extra load.

    Fix Foundation Issues

    Older homes are particularly susceptible to problems arising because of sliding soil or inadequate foundation installation techniques. If any damage occurs to the foundation, the structural integrity of the entire home is at risk. With basement underpinning, these issues can be fixed, and the structural stability of the foundation renewed.

    Opportunity to Improve Waterproofing Measures

    The basement underpinning process also provides the perfect opportunity to complete full exterior basement waterproofing as well as ensure that any foundation cracks are repaired and sealed.

    Not sure where to start?

    Contact Waterproofing PD and we will provide you with a free in-home inspection, report, and estimate for your basement underpinning project in Toronto.

    Frequently Asked Questions

    There are a few different factors that will be used to determine how much space can be added when completing basement underpinning. Our team of experts will look at the height of the existing foundation walls, the distance between the new slab and the finished soil grade and where the main drain is located.

    Interior basement waterproofing is done with basement underpinning.

    Fair weather is obviously ideal for completing construction projects such as basement underpinning. Summer months are preferable, but winter is also acceptable. The only real concern is to try avoiding the rainy and wet seasons, as flooding becomes a risk.

    We are more than happy to assist you in the process of obtaining the permits required for your Toronto basement underpinning project.