Basement Lowering and Underpinning in Toronto ON
Welcome to Aquamaster Waterproofing. Since 2009, our team has been offering basement lowering and underpinning in Toronto, with over 3000 happy customers across the region! Talk to one of our Toronto underpinning experts and get a free on-site estimate today!
Expert Basement Underpinning Contractors in Toronto
Aquamaster is an experienced basement underpinning and lowering contractor in Toronto. If your basement feels cramped, damp, or structurally unsound, we’ll provide safe solutions to strengthen your foundation while creating increased usable living space. Our team manages everything in-house, from structural engineering and permit applications to excavation and concrete work. With over 15 years in the industry, we’re one of the most experienced and trusted underpinning contractors in Toronto and the GTA.
When you hire us, you’re working with a licensed and insured Toronto contractor that thoroughly understands local soil conditions, older home foundations, and city regulations and requirements. We’ll assess your property, explain your options clearly, and recommend the most suitable approach for long-term stability and value. If you’re planning a renovation, need more headroom in your basement, or have foundation concerns, we can help. Our basement underpinning services are designed to protect you and your home long-term, while maximizing your property’s potential and value.
What Is Basement Underpinning?
Basement underpinning is a method used to strengthen and reinforce an existing foundation while simultaneously increasing the basement ceiling height. It is a complex structural alteration that requires the help of experienced professionals with proper licenses. The process involves excavating sections beneath your current basement footings in controlled stages. Then, we pour new concrete to extend the foundation downward. Basement underpinning and basement lowering require engineering plans, staged sequencing, scheduled inspections, and precise concrete work in order to maintain the structural integrity of your home throughout the project.
Benefits of Basement Underpinning & Lowering
Underpinning Toronto basements has functional, structural, and financial benefits. When we lower and reinforce your foundation, you gain usable square footage without changing your home’s footprint. Here are a few of the greatest benefits of underpinning and lowering basements:
Raises Basement Ceiling Height:
We create comfortable basement living spaces with 9-foot ceilings. This allows your basement to function as a usable space rather than storage.
Strengthens the Foundation
Our underpinning process reinforces aging and/or weakened foundations. As a result, we’re able to stabilize your home while reducing long-term structural stress.
Increases Property Value
A finished basement with a comfortable ceiling height can significantly increase your home’s resale value. It also opens up the opportunity for a rental unit.
Improves Waterproofing
During excavation, we can upgrade your home’s drainage systems, install new weeping tiles, and add basement waterproofing protection. This helps protect your home year-round from water damage.
Creates Potential for Secondary Unit
Underpinning increases your ceiling height to meet the requirements for a legal basement apartment. We can coordinate with engineers and city requirements to guarantee compliance.
Basement Underpinning Gallery
Take a look at some of our basement underpinning projects in Toronto.
Underpinning Process from Aquamaster
During every basement underpinning project, we communicate clearly, maintain a clean worksite, and guarantee structural safety. We make sure you always know what stage we’re in and what comes next. The following outlines each step of our underpinning process:
Assessment and Permit Approvals
We begin by assessing soil, foundation, and structural conditions. This assessment is performed by a licensed professional engineer. Once complete, we will secure the required Toronto building permits before beginning construction.
Demolition & Floor Removal
We will have to remove any existing finishes, partitions, and flooring to expose your home’s original slab and foundation walls. Our team will then prepare the area for safe excavation and concrete work.
Sectional Underpinning
We divide the foundation into segments and excavate beneath one section at a time. Next, we pour reinforced concrete footings to extend the structure downward. We coordinate inspections during underpinning to guarantee structural elements remain secure and code-compliant.
Excavation & Waterproofing
After underpinning the foundation walls, we excavate the floor area to the proper depth for the new ceiling height. Before pouring the new slab, we can install or upgrade weeping tiles, sump pump systems, and moisture protection layers as needed.
Gravel Base & Utility Rough-Ins
The next step is installing the gravel base and utilities, which will be underneath the new slab. Our team will apply a compacted gravel base, complete necessary plumbing installations and/or adjustments, and schedule inspections as required.
Concrete Slab Installation
Once all the utilities are routed and the gravel base is down, we will pour a durable, reinforced concrete slab at the lowered elevation. This slab acts as a solid base for future finishes such as hardwood or carpet flooring.
Final Inspection & Site Review
You never have to worry, as we will coordinate all the final inspections and walk you through the completed structural phase. Before leaving, we make the site is clean and all altered systems are functioning properly.
Cost of Underpinning & Lowering
Our basement underpinning and basement lowering services in Toronto start at $80 per square foot. Exact pricing depends on depth requirements, soil conditions, overall project complexity, waterproofing upgrades, and site accessibility. Older homes may require additional structural reinforcement or drainage improvements, which can alter the final cost.
At Aquamaster, we provide detailed estimates outlining scope, engineering, permits, and construction requirements. Unlike many of our competitors, we never offer vague pricing with hidden fees. We make sure you understand exactly what work is included and how it impacts your budget before we begin.
Why Choose Us
When done properly, basement underpinning doesn’t just lower your floor; it improves the long-term safety, functionality, and value of your home. Working with experienced and licensed pros has many benefits. Some of the top advantages of choosing Aquamaster include:
We provide a fully transferable 25-year warranty covering the materials, labour, and workmanship of our underpinning or lowering service.
Services
Our team is available 24/7 to respond quickly to urgent basement and foundation problems in Toronto and the GTA.
Every underpinning project is completed by a fully licensed and insured team. You can feel confident knowing safety and compliance are top priorities.
All first-time Aquamaster customers will receive a 10% discount off their initial service. We believe in providing top-quality underpinning at a fair cost.
With over 15 years of success providing basement underpinning and waterproofing services, our experience is a true display of our expertise and reliability.
We’re your local experts for all your underpinning needs. We understand Toronto’s soil conditions, requirements for older homes, and city code regulations.
We only use the highest-quality materials available. This includes our concrete, steel reinforcements, and waterproofing systems, guaranteeing lasting strength.
From consultation to cleanup, we carefully plan and complete every stage with full transparency and close collaboration.
Basement Waterproofing Testimonials from Toronto Clients
More Reasons to Consider Basement Underpinning Toronto
- Added Value – Basement floor lowering increases the height of a basement ceiling. Combine this with basement renovations and now you have more square footage of living space, which translates to a higher value of the property.
- Creates More Living Space – Our clients often turn their basements into gyms, game rooms, saunas, and more. How would you use an extra floor of space?
- Additional Income Source – In some cases you may be able to rent out your basement. Which will effectively create an additional source of income and will make it easier for you to pay your mortgage.
How to Get Started
- Get in touch with Aquamaster to book a free on-site consultation.
- We will provide you with an architect/engineer to obtain permits OR you may find one yourself.
- The architect/engineer will obtain permits and will expedite them according to your timeline.
- Set the commencement date for the project and get to work!
If you are interested in basement underpinning, reach out to us directly over the phone or through chat to get your 10% rebate. Our team will be happy to discuss your project!
Frequently Asked Questions
Here are the answers to some of the questions we often hear about our basement underpinning services.
How long does basement underpinning in Toronto take?
Underpinning basements typically takes 4 to 8 weeks following permit approval. This includes digging, reinforcing footings, and installing a new slab. Smaller projects can be on the shorter end, while larger and/or more complex jobs can take longer. Read more in article How Long Does Waterproofing & Underpinning Take?
Is basement underpinning worth it?
Yes! Basement underpinning and lowering is well worth the time and investment. Professional underpinning increases property value, strengthens the foundation, and helps prevent future structural issues. Additional benefits include increasing ceiling height, creating usable living space, and opening up the opportunity for a legal rental unit.
What permits are required for basement underpinning in Toronto?
What is the difference between basement lowering and underpinning?
Underpinning is a method used to lower a basement floor by digging below existing footings and strengthening the foundation as the floor is deepened. Other methods include bench footing, which can also increase the ceiling height but doesn’t extend the foundation downward as underpinning does.
What is the best time of year to underpin your basement?
Spring through fall is typically the best time to underpin your basement in Toronto. The warmer temperatures and drier soil conditions can make excavation easier. While winter underpinning is possible, it may be slower because of the frozen ground. Read more in article When is the best time to have my basement waterproofed?
Do I need to prepare my basement for underpinning?
Yes, there are a few steps to take be we can begin the underpinning process. It’s important to clear out furniture and belongings to prevent damage. Protecting valuables and clearing pathways helps us proceed efficiently and safely.
What ceiling height can I expect following underpinning?
Aquamaster can increase your basement ceiling height to 9 feet with our basement underpinning and lowering services. Following a property assessment and consultation, we can provide further details on ceiling height for your specific project.
Can I live in my home while you underpin or lower my basement?
While it is possible to continue living upstairs while underpinning is underway, it’s important to note that working conditions can be loud and dusty. There will also be restricted access to your basement during the excavation and concrete work. At Aquamaster, we prioritize your safety and happiness. Our team will coordinate with you to minimize disruptions.
How do I know if my basement is suitable for underpinning?
A professional on‑site assessment will tell us and you everything you need to know about your home’s suitability for basement underpinning. We will inspect your foundation, soil, existing ceiling height, and drainage conditions to determine project feasibility and determine if alternative methods, such as bench footing, may be best.
Is underpinning required for a legal basement apartment?
No, underpinning and basement lowering are not always required when creating a legal basement apartment. It is only required if your existing ceiling height is below the minimum requirement of 6 ft 5 inches. However, underpinning can improve the comfort and functionality of a basement apartment by increasing the ceiling height to 8 ft or 9 ft.
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