LOT + ACCESS
Site Plan & Zoning
The site plan establishes property lines, setbacks, distances to other buildings, zoning statistics, grade information, parking spaces, driveway or lane access and other accessory structures.
◆ Detached garage permit drawings
Detached Garage Permit Drawings in Toronto & the GTA
Planning a new detached garage, replacement garage or garage with storage or workshop space? iPermit reviews the property and zoning constraints, prepares the permit drawings, coordinates required technical information and supports the municipal application within the agreed scope.
A Typical Detached Garage in Toronto Needs a Building Permit
Toronto lists a detached garage as an accessory structure and requires a Building Permit when the structure is larger than 10 m². Attachment to another building or the addition of plumbing can also change the permit requirement regardless of size.
For a garage, the permit decision is only the first step. The City reviews how the garage sits on the lot, how vehicles reach it, how required parking is arranged, how the slab/foundation and building are constructed, and whether the proposal complies with the zoning that applies to the property.
That is why iPermit starts with the address and site information before treating a prefab garage plan or contractor sketch as permit-ready.
◆ A garage needs a vehicle path, not just a footprint
Parking and Vehicle Access Can Limit the Garage Site
A detached garage is different from an ordinary shed because the site plan has to coordinate the building with vehicle parking and the driveway or lane used to reach it. Toronto’s garage guide specifically asks for the dimensions and locations of required parking spaces and the driveway serving them.
Setbacks are also property-specific. Toronto’s zoning contains garage rules for side yards, rear yards, lanes, corner lots and street-facing vehicle entrances, plus many site-specific Chapter 900 exceptions. A setback number copied from another property is therefore not a reliable design rule.
The useful sequence is to confirm the lot, access and zoning first; then finalize the garage width, door position, height and structural layout around a site plan that can actually work.
A Replacement Garage Needs a Fresh Site and Foundation Review
An existing garage can be useful evidence, but it does not automatically prove that a new garage can be rebuilt in the same location and form. Older structures may predate current zoning, have incomplete permit records or sit on construction that was never designed for the proposed replacement.
Before relying on the old footprint, the review should compare the current survey, existing garage dimensions and proposed replacement with the zoning and site conditions that apply now. If the project changes the width, height, door orientation, parking arrangement or access, those changes need to be reflected in the new permit design.
The same caution applies to an old slab or foundation. Reuse should not be assumed from appearance alone. The existing construction may need to be verified for dimensions, condition, reinforcement, frost protection and suitability for the new structure before it is shown as part of the permanent design.
If demolition or removal approvals are required for the existing structure, they should be confirmed with the municipality as part of the replacement strategy rather than discovered after the new garage drawings are complete.
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.
◆ Site + building + construction
What the Garage Permit Package Has to Bring Together
Toronto reviews the proposed garage as a building on a specific lot, so the site information and construction drawings need to describe one coordinated proposal.
GARAGE FORM
Plans, Elevations & Sections
Floor plans, exterior elevations and sections show garage dimensions, door and window locations, overall height, roof form, slab/foundation and the relationship of the walls and roof assemblies.
CONSTRUCTION
Construction Details & Submission Support
Construction information can include concrete slab details, wall/floor/roof assemblies, guards where applicable and project-specific structural information. iPermit coordinates the permit set and supports relevant municipal review comments within scope.
What Toronto Currently Requires for a Detached Garage Permit
Toronto’s current Garages and Carports application guide requires standardized drawings that are drawn to scale, fully dimensioned, signed and dated.
For a detached garage, the City asks for a survey-referenced site plan showing property lines, easements or rights-of-way, existing/proposed buildings, setbacks, zoning statistics and grade information. The garage information on that plan also includes the distance to other buildings, required parking spaces and the driveway used to access them.
The building documentation includes floor plans, elevations, sections and construction details, including concrete floor-slab information such as proposed concrete strength and reinforcement. Toronto also asks for wall, floor and roof assembly information and guard connection details where guards are part of the design.
Where the submitted drawings or documents bear a professional engineer’s seal, the responsible P.Eng. must identify the engineering content for which they assume responsibility. That does not make professional engineering a blanket requirement for every detached garage.
Toronto’s current garage application also includes the applicable permit and designer forms, a Tree Declaration where construction may affect private or City trees, and an Overhead Electrical Conductors Declaration for the new building. Detached garage applications are now submitted through Toronto Building’s online Application Intake service.
Eligible detached garages can use Toronto’s Express Services stream, with a current target of three business days for examiner review after complete intake. Projects with an active new-house or addition permit, or those requiring Heritage approval or a variance, do not qualify for the standard Express route.
◆ When the project needs a different route
When a Detached Garage Needs a Different Permit Route
These conditions can change the page owner, approval path or professional scope. They are better identified before the garage footprint and construction package are locked.
The garage will be attached to the house
Toronto directs attached garages and carports through the Small Residential Additions path rather than the detached-garage online route. If the garage physically connects to the house, the project should be reviewed as part of the addition/building-envelope scope.
The preferred garage location does not meet zoning
Garage setbacks, lane relationships, lot coverage, height and site-specific zoning exceptions can constrain the footprint. If the preferred design does not comply, the project may need redesign or a minor variance.
The building is really a shed, cabana or workshop structure
If the structure does not contain vehicle parking and is primarily storage, a gazebo, cabana, pool house or similar backyard building, it belongs under the broader accessory-structure service rather than the garage page.
The garage is intended to become a dwelling unit
A garage that is being converted or designed as independent residential accommodation is not a standard parking/accessory-building project. A self-contained backyard dwelling should be reviewed under the Garden Suite service and its zoning, servicing and life-safety requirements.
◆ The intended use changes the drawing scope
How Garage Use Changes the Drawing Scope
The permit still belongs to the same garage service, but the intended use affects height, structure, openings, services and site planning.
01
Single-car garage
Compact parking and storage still need a workable vehicle path, zoning-compliant footprint and coordinated slab, wall and roof construction.
02
Double-car garage
A wider door and larger clear span can change the structural design, building width, site coverage and driveway relationship.
03
Garage with storage loft
Loft storage can affect height, access, structure and how the upper space is documented. It should not be treated as an unreviewed extra floor after the base garage is designed.
04
Garage With Workshop or Services
Heating, plumbing or more intensive workshop use can add mechanical, plumbing, electrical or professional-design requirements that should be identified before the permit set is finalized.
◆ Start with the property and vehicle access
What to Send for a Detached Garage Review
You do not need a finished garage design to start. The first review should establish where the garage can sit, how vehicles reach it and what still needs to be verified before detailed permit drawings begin.
Property address
Survey is valuable
Prefab plans welcome
◆ Detached garage questions
Detached Garage Permit FAQs
These answers focus on the site, zoning and drawing decisions that change a detached garage permit before construction begins.
Do I need a permit for a detached garage in Toronto?
Toronto identifies a detached garage larger than 10 m² as an accessory structure requiring a Building Permit. The exact proposal still has to comply with the zoning and site requirements that apply to the property.
What is Toronto's building-permit fee for a detached garage?
Toronto’s 2026 building-permit fee for a single-family detached garage or accessory structure is $214.79 per structure. Additional municipal fees can apply if the project also needs separate zoning, variance, plumbing, mechanical or other approvals.
Do I need a survey for a detached garage permit?
Toronto’s current garage application guide asks for a site plan referenced to a current survey. Reliable property information is important because the permit review needs lot lines, setbacks, other buildings, parking and driveway or lane access.
Can I rebuild a garage in the same location as the old one?
Not automatically. The existing garage may predate current zoning or differ from the proposed replacement. The current lot, setbacks, garage dimensions and replacement design should be reviewed before relying on the old footprint.
Can I reuse the existing garage slab or foundation?
Possibly, but reuse should not be assumed. Existing construction may need verification for condition, dimensions, reinforcement, frost protection and suitability for the proposed building before it is shown as part of the new permit design.
Does every detached garage need structural engineering?
No. Engineering is project-specific. Unusual spans, foundations, structural systems or other complex conditions can require professional engineering. If engineering content is sealed for the permit, the responsible P.Eng. identifies the content for which they assume responsibility.
How fast does Toronto review a detached garage permit?
Eligible detached garages can use Toronto’s Express Services stream, where the City currently targets examiner review within three business days after complete intake. Projects requiring a variance or Heritage approval, or properties with an active new-house or addition permit, fall outside the standard Express route. The three-day target is not the total design or permit timeline.