Basement Walkout Toronto
DESIGN | PERMITING | CONSTRUCTION | RENOVATION | SERVICES
Basement Walkout Toronto
DESIGN | PERMITING | CONSTRUCTION | RENOVATION | SERVICES
Basement Walkout Contractors
At Strong Basements, we realize the increased need for basement walkout construction in Toronto and GTA, particularly by homeowners who want to develop legal basement apartments in the city’s Second Suite projects. A basement walkout, besides offering the convenience of a secondary exterior entrance, greatly adds value to the property by converting available space into a rental space or private living quarters.
The construction of a basement separate entrance is a complicated process that includes excavation, underpinning, masonry, steel reinforcement, waterproofing, installing drains, and concrete work. That is why we have made our construction process more efficient to expedite project timelines and maintain affordability, allowing homeowners to be able to upgrade their homes quickly and effectively.
In the next sections, we’ll walk you through every step of the process of constructing a basement walkout, illustrating how Strong Basements provides high-quality, yet budget-friendly, solutions to optimize your home.
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Basement Walkout Costruction
Below are the key basement walkout construction steps we implement in our projects. Each stage is carefully planned and executed to ensure a durable, code-compliant, and high-quality basement entrance.
To get a 360° view of the process, click the link below each picture [>VIEW IT IN 360°] and explore the 3D mode for a more immersive experience.
With the permit in hand, excavation of the space surrounding the new entrance begins. Based on the scope of the project and the conditions of the site, excavation may be conducted by hand, by an excavator, or by a vacuum truck. All methods are selected for maximum efficiency and security, preventing the collapse of the ground while creating a safe working environment. The meticulous process provides the space necessary for the new door and preserves the integrity of your home.
At Strong Basements, we use high-density rigid foam insulation to form the foundation footing for your basement walkout. We typically work with insulation sheets ranging from 2″ R10 to 4″ R20, creating a permanent concrete form that not only minimizes material waste but also insulates the footing. By preventing soil freeze-thaw cycles, this technique helps protect your structure against potential shifting and ensures the long-term stability of your walkout.
For effective basement walkout waterproofing, we install a weeping tile pipe system that seamlessly connects to your home’s existing weeping tile setup. By channeling groundwater away from the structure, we help prevent flooding, moisture buildup, and potential damage — ensuring a dry, secure space for your basement walkout.
We install two to three lines of 15 millimeter steel rebar within the footing forms to reinforce the concrete foundation of your basement walkout. This strategic reinforcement bolsters the structural integrity of the new footing, ensuring a stable and long-lasting base for your project.
We fill the reinforced and insulated forms with a high-grade concrete mixture to form a dependable and durable foundation footing for your stand-alone basement entrance project.
Prior to opening a door entrance in the basement, we need to add steel angle braces to preserve the structure of the building. After steel supports are installed, a portion of the basement foundation wall is carefully cut out, leaving a safe, precise space for the new door entrance to fit through.
To further stabilize, 10mm or 15mm steel rebar dowels are inserted into the existing basement foundation through the application of a high-strength epoxy adhesive. The procedure ensures the proper connection of the retaining wall of the basement walkout to the pre-existing basement wall, enhancing overall stability as well as lifespan.
Properly reinforced walkout retaining walls are essential to the overall long-term stability. If you’re pouring concrete wall or using concrete blocks, we reinforce the structure with steel rebar mesh and steel wire block locks. This method of reinforcement provides a retaining wall that can efficiently resist pressure from the soil and keep its structure intact in the long term.
In the Toronto region, although poured concrete walls are an alternative, in most cases for retained walls, we would tend to use concrete blocks. Concrete blocks can be more flexible, taking up less excavation space—a point to be considered in the narrow residential plots typical of the city. Provided that a concrete block wall is reinforced, they can be as secure as a poured concrete wall. To reinforce a block wall, we place 10-millimetre steel rebar vertically and steel wire block locks horizontally, followed by the pouring of concrete within the blocks, building a “steel and concrete reinforced block wall”.
We install a floor drain at the walkout basement landing to handle stormwater. Then, both the floor drain and the weep tile pipes are connected to a single drainage pipe, channeling it to an appropriate drainage outlet, i.e., a sump pump, to regulate water runoff efficiently.
We insulate under the stairs and landing of a walkout basement with rigid foam to prevent freezing in the ground and reduce ground movement. Not only does the installed layer insure the structure’s stability, but also the overall lifespan of your walkout.
We enhance the structural integrity of the landing and stairs by installing steel rebar reinforcement. In most cases, a 10-millimetre steel rebar mesh is used, with additional horizontal rebar placed for each concrete step, ensuring a sturdy and long-lasting result.
With our concrete block wall system, we construct an integrated steel reinforcement framework that ensures the basement walkout is both solid and strong. This reinforcement strategy significantly enhances durability and structural stability, providing a secure, long-lasting foundation for our projects.
To reinforce the walkout basement block wall, we fill a high-strength concrete mixture with a pea gravel aggregate in the concrete blocks. As the concrete sets, a concrete vibrator is used to compact the concrete to the point of filling all internal voids, preventing them from leaving air bubbles and resulting in a hardened and reinforced structure.
The same high-strength concrete mixture is used for the stairs and the walkout basement landing as for reinforcing the concrete block walls. To provide an integral, structurally secure connection, the concrete used for the stairs, the landing, and the wall is usually poured in one day. This method increases overall strength and durability and avoids structural weaknesses in the building.
After the concrete has hardened completely, the concrete forms are stripped away, thus the interior structural work is now completed. At this point, only the exterior waterproofing of the walls, insulation, and backfill are to be done in order to complete the walkout basement construction.
After all the concrete work is done, we move to waterproof and insulate the outside of the basement walkout. After that, the construction is completed by carefully backfilling the periphery to maintain stability and proper drainage.
To thoroughly waterproof the outside basement walkout wall, we apply several coats of a rubberized foundation coating, including Aqua-Bloc. A second layer of protection, the installation of a PVC waterproofing membrane, including Delta-MS, is placed over the coating for added security. Together, the combination provides moisture resistance over the long term and shields the foundation from water penetration.
Over the waterproofing membrane, we recommend and install 2″ R10 rigid foam insulation sheets to break the thermal bridge between the foundation wall and the surrounding soil. This insulation helps improve energy efficiency, reduces heat loss, and prevents frost-related issues around the basement walkout.
Building basement separate entrance with us
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- Warranty
Do I Need a Permit for Basement Walkout in Toronto?
Yes, you do need a building permit from the City of Toronto to construct a basement walkout. The permit process is in place to ensure that all construction work meets the Ontario Building Code standards, local zoning bylaws, and safety regulations. Obtaining a permit involves submitting detailed plans drawn up by a qualified designer or engineer, outlining the proposed changes to your home’s structure.
IN TECH HOUSE DESIGN (ITHD) is our trusted architectural and engineering partner, which provides homeowners with zoning bylaws, surveys, design, architecture, engineering, and building permits.
WWW.ITHD.CA
+1 (647) 483-4775
Basement Walkout Construction cost
The price of a Toronto basement walkout installation can be very wide-ranging, with standard construction costs that can range from $25,000 to $60,000. The variation depends largely on the complexity of the work and the challenges that each home offers, including its existing foundation, the type of soil, the character of the neighborhood, and the features that the client is looking to add to the space.
A basic walkout installation in favourable conditions, like the model presented in the pictures, may cost around $37,000 to $42,000. Typically, it includes excavation, insulation, steel reinforcement, concrete footing, masonry, metal braces, door opening, concrete reinforcement, landings and stair concrete pour, waterproofing and drain installations, and sump pump installation*. This price also includes labour, materials and management. The presented model is a 16’8″ Long, 4’10” Wide, and 9’00” Deep retaining wall. The landing is 4′ X 4′, and the stairs are 4′ Wide with 13 steps.
More complex projects or those with additional features can push costs toward the higher end of the range, reaching $40,000 to $60,000 or more.
Apart from the building costs, residents should also plan for other necessary expenses, including:
- An engineering plan $2,500 – $4,000
- An optional property survey would be roughly $1,500
- The required building permit usually costs around ~$500.
Although the upfront expense can appear high, a professional basement walkout can enhance the value of your home greatly, in many cases resulting in a strong return on investment in Toronto’s active housing market.
Basement Walkout Construction Timeline
The building process of a typical basement walkout in Toronto can span 3 to 4 weeks, depending on the complexity of the work, the climatic conditions, and unforeseen delays. The whole process, including permitting and planning, as well as delays, can make the project last 3 months.
The zoning, planning and design phase usually takes 2 to 4 weeks, followed by an additional 2 to 6 weeks for the permit application and possession of the building permit. For more information about basement separate entrance building permits, contact ITHD.
Once permits are secured, the construction phase can begin, with excavation and foundation work taking 1 -2 weeks, retaining wall and stair installation another week, and finishing touches like waterproofing, drainage, and landscaping requiring an additional 1 – 2 weeks.
You need to hire professional contractors who can give you precise estimates of timelines and keep you informed step by step. Although constructing a basement walkout is a big project, the added value to your residential space and the increase in value of your house justify the project’s cost to most Toronto residents.
walkout basement faq
Installation of a sump pump in basement for a walkout basement is optional, in Toronto’s climate, installation is recommended. Although the basement is partially above grade, the portion that is below grade can still be vulnerable to water entry. A sump pump serves as an important first line of defense against flooding and moisture problems. The sump pump receives excess water from both in and around the foundation and sends it away from the home, keeping the basement dry. In high water-table regions and water-accumulation-prone properties, a sump pump is even more necessary. Insurance companies also see sump pumps in a positive light and can even offer a discount on premiums to homes that do so. To achieve the best in moisture control, combining the sump pump with a full waterproofing system and correct exterior grading is the way to go.
Yes, a walkout basement usually adds value to a home in Ontario. Below is a more detailed explanation:
More living space – Walkout basements are usually viewed as additional space to live in, as opposed to mere storage space or utility space. This literally makes the living space of the home greater, which in turn leads to higher value of the property.
Versatility – Walk-out basements are extremely versatile as a result of easy access to the outside as well as natural lighting. They can be utilized as rental space, home offices, family room space, or in-law quarters. Their versatility makes them attractive to buyers.
Natural Light – Walkout basements are advantaged by the presence of doors and large windows, providing a vast amount of natural light relative to standard basements. Natural light makes the space feel more like an upper floor, increasing its value perception.
Energy efficiency – The additional daylight can decrease the amount of artificial lighting you need, so you can save money in the long run.
Outdoor connection – A direct opening to the yard is an attractive aspect to many because it adds to the lifestyle of the home.
Potential for a separate entrance – This is very important for income properties or multi-generational living situations.
Market demand – In the Ontario housing market, walkout basement houses tend to be in high demand and can sell faster than other similar houses without one.
Return on investment – While the costs can vary, most Ontario homeowners find that the value that a walkout basement adds to their home probably exceeds the cost, especially in high-demand areas.
The walkout basement affects the structure, but in a good way, as these effects can be controlled if done under proper planning and work:
Structural issues – Opening an existing foundation wall involves precise engineering to preserve the structural integrity of your home. In many cases, new supporting beams and footings are installed.
Waterproofing – Any exposed portion of the foundation promotes water entry, and thus the need for extensive waterproofing.
Soil stability – Walkout excavation can impact soil pressure against the foundation, necessitating retaining walls or other means of stabilization.
Drainage – Proper grading and drainage systems are essential in directing water away from the new walkout and the foundation.
Frost protection – Under Toronto’s climate, protecting the foundation from the onset of frosting is vital to avert frost heave.
Existing problems can be solved by professional services that underpin a basement and/or do repairs to a foundation. Work with structural engineers and professional contractors who know the unique conditions of Toronto’s soil and the necessary building specifications to securely add the walkout without jeopardizing the structural integrity of your home.
Walkout basements can potentially flood, but they’re not inherently more prone to flooding than standard basements. The risk of flooding depends on various factors and can be mitigated with proper design and preventive measures. Here’s a more detailed explanation:
1. Potential for flooding:
- Like any basement, walkout basements can flood if not properly constructed and protected.
- The exposed wall and ground-level entrance can be entry points for water if not adequately waterproofed.
2. Factors affecting flood risk:
- Local topography and drainage patterns
- Soil type and water table levels
- Quality of construction and waterproofing
- Maintenance of gutters, downspouts, and grading around the house
- Severity of weather events
3. Preventive measures:
- Proper grading: Ensure the land slopes away from the foundation to direct water away from the house.
- Quality waterproofing: Apply thorough waterproofing to all below-grade walls and floors.
- Effective drainage systems: Install French drains or other perimeter drainage systems.
- Sump pump installation: A well-maintained sump pump can remove excess water.
- Window wells: For any below-grade windows, install proper window wells with drains.
- Regular maintenance: Keep gutters clean and ensure downspouts direct water away from the foundation.
- Landscaping considerations: Use plants and hardscaping to help manage water flow around the property.
4. Building code compliance:
Adhering to local building codes, which often include specific requirements for walkout basements, can significantly reduce flood risks.
5. Professional assessment:
Have a professional evaluate the specific conditions of your property to identify potential risks and recommend appropriate measures.
6. Insurance considerations:
Some insurance policies may have specific clauses or requirements for walkout basements. It’s important to review your coverage.
7. Advantages in flood prevention:
In some cases, walkout basements may actually have an advantage in flood prevention. The above-ground entrance can provide a natural exit point for water in severe flooding scenarios, potentially reducing pressure on below-grade walls.
8. Regular inspections:
Conduct regular inspections of your walkout basement, especially after heavy rains, to catch and address any water infiltration issues early.
While walkout basements can be susceptible to flooding, with proper planning, construction, and maintenance, the risk can be significantly reduced. It’s crucial to work with experienced professionals who understand local conditions and can implement effective flood prevention strategies. Remember, even with the best precautions, no basement is completely immune to flooding in extreme weather events, so it’s always wise to have a plan in place for such scenarios.
While walkout basements offer many benefits, there are some potential drawbacks to consider:
Higher construction costs – The excavation, structural work, and additional features required can make walkout basements more expensive than traditional basements.
Potential drainage issues – If not properly designed and waterproofed, walkout basements can be more susceptible to water infiltration due to their partial above-ground exposure.
Privacy concerns – Ground-level windows and doors may reduce privacy, especially in urban settings or homes close to neighbors.
Landscaping challenges – Creating the necessary slope for a walkout basement may require significant changes to your property’s landscaping.
Zoning restrictions – Some areas may have regulations limiting the size or use of walkout basements, particularly if intended as separate living units.
Heating and cooling considerations – The increased exposure to outdoor elements may affect the basement’s temperature regulation, potentially leading to higher energy costs.
Structural complexities – Ensuring proper support for the partially exposed wall can require additional engineering considerations.
Maintenance requirements – The exposed portion of the basement may require more upkeep, such as exterior painting or sealing, compared to fully underground basements.
The cost of a walkout basement can vary significantly based on several factors, including the extent of excavation required, the complexity of the design, materials used, structural modifications needed, and local labor costs. In Toronto, the starting cost for a basic walkout basement typically ranges between $25,000 and $40,000. However, more elaborate projects with high-end finishes, extensive landscaping, or additional features like outdoor patios can exceed $60,000 or more. It’s important to factor in costs for permits, potential utility relocations, waterproofing, and drainage systems. Homeowners should also budget for interior finishing if they plan to use the space as a living area. Getting detailed quotes from multiple contractors and clearly defining the scope of work can help in estimating more accurate costs for your specific project.
