01
Lot & setback space
The site plan has to show property lines, the house, adjacent buildings and setback dimensions. Narrow side yards can limit where an exterior stair or landing can fit.
◆ Basement side entrance & walkout permits
Side Entrance & Basement Walkout Permit Drawings in Toronto
Planning a basement side entrance or walkout? Start by confirming whether the proposed location works with the lot, foundation, grade and zoning constraints before the stairwell is fully designed.
The Entrance Is a Permit Project Even When the Basement Is Not a Rental Unit
Toronto has a dedicated building-permit process for construction of a new residential basement entrance. The work can affect the foundation wall, excavation, exterior stairs and landings, guards, grading and the relationship of the entrance to the surrounding lot.
The permit requirement does not depend on whether the basement will become a rental unit. A homeowner can add exterior basement access for personal or family use and still need a permit for the physical construction.
The useful first step is to confirm whether the proposed entrance location works with the property before detailed drawings are developed.
Toronto currently accepts Residential Basement Entrance permit applications through its Building Online Services Application Submission Tool, where applicants can review required documents and track the submission process.
Ready to Define Permit Path?
Send project context first, the next step can then focus on scope, information gaps and the right page or service route.
◆ Before the stairwell is designed
Four Site Questions Control a Basement Entrance
A basement entrance is partly a building project and partly a site-planning problem. These checks determine whether the proposed location is workable and what the permit package needs to show.
02
Foundation opening
The new door changes the exterior foundation wall. Existing foundation construction, the proposed opening and any required structural support have to be coordinated with the permit drawings.
03
Grade & stair depth
The difference between exterior grade and basement floor level controls stair geometry, landing depth, guards and how much excavation the project creates.
04
Water & adjacent conditions
A below-grade entrance creates a low point beside the house. Surface drainage, existing grading, nearby foundations, trees and other site constraints should be identified before the detail is finalized.
When Does a Side Entrance Become a Zoning Issue?
A narrow side yard can turn an otherwise workable basement entrance into a zoning problem. Under Toronto Zoning By-law 569-2013, exterior stairs in the Residential Zone category can encroach into a required building setback only when specified conditions are satisfied, including limits on stair width and proximity to a lot line.
The applicable zoning should be checked for the actual property before the stair location is treated as fixed. Former zoning by-laws, site-specific exceptions or other property conditions can change the result.
If the proposed entrance cannot comply with the applicable zoning but the project is otherwise viable, a Minor Variance may need to be considered separately.
◆ Below grade changes the risk
The Door Is Visible. The Water Path Is the Part You Cannot Ignore.
A below-grade stairwell creates a low point beside the foundation. The design therefore needs to consider how rain and surface runoff move around the stair, landing and adjacent grade rather than treating the door opening as an isolated detail.
The appropriate water-management approach depends on the existing grades, entrance depth, foundation conditions and available drainage options. A naturally sloping rear walkout can therefore require a very different solution from an excavated side-yard entrance.
What Toronto Currently Asks for in a Basement Entrance Permit
Toronto’s current Residential Basement Entrances guide requires drawings that explain both the property and the new construction. The exact package depends on the proposed work and existing conditions.
| Permit information | What the drawings may need to show |
|---|---|
| Site information | Property lines, easements or rights-of-way, house and adjacent buildings, setbacks, grade information, parking, driveways and other relevant site conditions based on current survey information. |
| Basement & foundation plans | Existing and proposed foundation construction, the new entrance opening and any underpinning or structural conditions included in the project. |
| Floor plans & sections | The relationship between the entrance and basement layout, exterior grade, stairwell depth, foundation wall, footing and landing at the bottom of the stair. |
| Stair & construction details | Stairs, landings, guards, handrails, assemblies and other construction information needed to explain the proposed work. |
Additional forms or professional documents depend on the project. Where engineering documents are sealed, Toronto requires the responsible Professional Engineer to identify the engineering content for which they accept responsibility.
Ready to Define Permit Path?
Send project context first, the next step can then focus on scope, information gaps and the right page or service route.
◆ When the entrance becomes a larger project
What Can Turn a Side Entrance Into a Larger Permit Project?
These conditions can add drawings, professional review or another approval path. They should be identified before the entrance is priced as a simple door-and-stair project.
| Project condition | Why it changes the scope |
|---|---|
| The excavation is close to a neighbouring foundation | Excavation depth and proximity to adjacent footings can create additional structural-design and field-review requirements. |
| The project includes underpinning | Underpinning introduces a separate foundation design and construction sequence that should be coordinated with the entrance before submission. |
| The entrance is part of a basement apartment | The entrance becomes only one component of a broader secondary-suite permit involving life safety, exits and affected building systems. |
| Trees, easements or unusual grading affect the location | Property constraints can restrict excavation, change the entrance location or require additional site information and approvals. |
A Separate Entrance Does Not Make the Basement a Legal Apartment
A permitted exterior entrance does not by itself create a legal secondary suite. If the basement will become a separate dwelling unit, the project must also satisfy the zoning, Building Code and other requirements that apply to the unit as a whole.
That broader review can involve fire separations, smoke and carbon-monoxide alarms, exits, plumbing, ventilation and other affected systems.
A separate exterior exit is preferable for many second-unit layouts, but it is not the only compliant exit arrangement available in every existing house. The same applies to escape windows: the applicable requirement depends on the unit layout and exit strategy, not simply on the presence of every basement bedroom.
If the main objective is to create or legalize a basement dwelling unit, use the Legal Basement Permit service instead.
◆ Start with the property, not the stair detail
Send the Entrance Location, Survey and Basement Context
The first review should establish whether the entrance concept fits the lot and what still needs to be measured or verified before the permit drawings are developed.
Property address
Survey is valuable
Photos help
◆ Basement entrance questions
Side Entrance & Basement Walkout Permit FAQs
These answers focus on the decisions that change the entrance design, permit scope and relationship to a legal basement project.
Do I need a permit for a new basement side entrance in Toronto?
Yes. Toronto has a dedicated Residential Basement Entrances building-permit service for construction of a new basement entrance. The permit drawings must describe both the site and the new exterior construction.
Can I add a basement entrance if the side yard is narrow?
Possibly. The answer depends on the property lines, setbacks, existing building position, stair/landing geometry and other site constraints. A current survey is especially useful because Toronto requires setback dimensions and adjacent-building information on the site plan.
Does every basement entrance need structural engineering?
Not every project has the same engineering scope. Engineering can become necessary because of the foundation opening, retaining or support conditions, underpinning, nearby foundations or other structural factors. If professional engineering content is sealed for the permit, the responsible P.Eng. assumes responsibility for that content.
Does a separate entrance make my basement apartment legal?
No. An exterior entrance can be permitted without creating a separate dwelling unit, and a doorway alone does not make a basement apartment legal. If the project is a basement dwelling unit, use the Legal Basement Permit service so the full suite requirements are reviewed.
Does every basement bedroom need its own egress window?
No. The required exit and means-of-escape arrangement depends on the applicable Building Code path and the unit layout. Ontario’s second-unit guidance allows different compliant exit arrangements in existing houses. A window can be required as an additional means of escape in some layouts, but the rule is not simply “one egress window in every bedroom.”
What drawings does Toronto ask for for a basement entrance permit?
Toronto’s current guide asks for a survey-based site plan, existing/proposed floor and foundation information, sections, footing/foundation details, exterior grade and landing information, and stair, guard and handrail details. Additional forms or professional documents depend on the project conditions.