What Is a Zoning Applicable Law Certificate in Toronto? 2026 Complete Guide
- 416 Construction
- Aug 2
- 15 min read
A Zoning Applicable Law Certificate, commonly called a ZAP, is a preliminary review completed by Toronto Building before a building-permit application is submitted.
During the review, the City examines the proposed drawings to determine whether the project complies with:
The applicable Toronto zoning by-law
Property-specific zoning exceptions
Required setbacks, height, density and coverage limits
Permitted uses
Parking and access requirements
Other applicable laws that must be satisfied before a building permit can be issued
An issued Zoning Applicable Law Certificate allows an owner to submit the project as part of a complete building-permit application, provided that the permit drawings match the drawings reviewed through the ZAP process and all identified applicable-law requirements have been satisfied. (City of Toronto)
A ZAP is not a building permit and does not authorize construction.
Instead, it confirms that the proposed project has passed the City’s preliminary zoning and applicable-law review so the technical Building Code review can proceed through the appropriate permit-review stream.
For Toronto homeowners planning a custom home, home addition, laneway suite, garden suite, multiplex conversion or major renovation, obtaining a ZAP is now one of the most important early steps in the design and permitting process.
What Does ZAP Stand For?
ZAP stands for:
Zoning Applicable Law Certificate
The City of Toronto introduced the ZAP service on March 1, 2022. It replaced the former Preliminary Project Review and Zoning Certificate services.
The new process combines:
A comprehensive zoning review
A review of applicable laws connected to building-permit issuance
The City explains that an issued ZAP allows the owner to make a complete building-permit application for the same proposal. (City of Toronto)
Why Did Toronto Introduce the ZAP Process?
Before a building permit can be issued, a proposed development must satisfy more than the Ontario Building Code.
The project must also comply with:
Municipal zoning requirements
The Planning Act
Certain provisions of the Ontario Heritage Act
Site-plan-control requirements
Conservation-authority requirements
Other provincial or municipal laws that may apply to the property
A permit application can become significantly delayed when these matters are discovered only after the full architectural, structural and mechanical package has been submitted.
The ZAP process is intended to identify these issues before the building-permit review begins.
This helps the applicant understand whether the project:
Is permitted as proposed
Needs design revisions
Requires a minor variance
Requires a zoning by-law amendment
Requires heritage approval
Requires conservation-authority approval
Requires site-plan approval
Is affected by another applicable law
The review does not guarantee that the building permit will be issued, but it can prevent the permit application from entering the process with unresolved zoning or applicable-law problems.
Is a Zoning Applicable Law Certificate Required in Toronto?
Under Toronto’s current standard permit-review streams, an issued ZAP is required for a building-permit application to be treated as complete.
For house, small-building and large or complex-building applications, Toronto identifies the following as components of a complete application:
A completed permit application form
The owner’s or authorized agent’s signature
A complete set of plans and specifications
An issued Zoning Applicable Law Certificate
Confirmation that the applicable-law requirements identified through the ZAP have been satisfied
Payment of the required fees
Toronto states that an application submitted without an issued ZAP is considered incomplete and is not subject to a prescribed review timeframe. (City of Toronto)
The City’s standard review periods for complete applications are generally:
Permit-review stream | Review period |
House | 10 business days |
Small building | 15 business days |
Large building | 20 business days |
Complex building | 30 business days |
These review periods begin only after the City has received a qualifying complete application. A permit application submitted without a ZAP may still be reviewed, but Toronto does not provide a prescribed review period for incomplete applications. (City of Toronto)
Certain projects may qualify for Toronto’s separate Express Services process, which has its own submission requirements. The applicable City application guide should always be reviewed before submitting.
What Does the City Review During a ZAP Application?
The ZAP review examines two related areas:
Zoning compliance
Applicable-law compliance
Zoning Compliance
Toronto’s zoning by-laws establish what can be built and how a property can be used.
The zoning review may examine:
Permitted land use
Number of dwelling units
Permitted building type
Lot area
Lot frontage
Building height
Building depth
Gross floor area
Floor-space index
Lot coverage
Front-yard setback
Rear-yard setback
Side-yard setbacks
Building length
Building location
Platform and balcony projections
Parking requirements
Driveway width
Soft landscaping
Accessory buildings
Laneway-suite or garden-suite requirements
Property-specific zoning exceptions
Toronto’s zoning by-laws regulate land and building uses, building size and density, building placement, minimum lot dimensions, parking requirements and maximum building height. (City of Toronto)
Example: Rear Home Addition
A homeowner may want to construct a two-storey rear addition.
The ZAP review could examine whether the proposed addition complies with:
Maximum permitted building depth
Rear-yard setback
Side-yard setbacks
Maximum building height
Gross floor area
Lot coverage
Required landscaping
Platform or deck regulations
Property-specific zoning exceptions
Even when the addition is structurally possible, it may not comply with every zoning requirement. The design would then need to be revised or the owner may need to request minor variances from the Committee of Adjustment.
Applicable-Law Compliance
“Applicable law” refers to laws outside the Ontario Building Code that must be satisfied before the Chief Building Official can issue a building permit.
Toronto identifies common applicable laws involving:
Applicable law or approval | When it may apply |
Zoning by-laws under the Planning Act | All projects must comply with applicable zoning |
Committee of Adjustment approval | The proposal requires minor variances |
Zoning by-law amendment | The requested development cannot be authorized through minor variances |
Ontario Heritage Act approval | A designated property or heritage-district property is being altered or demolished |
Site-plan approval | The development is subject to site-plan control |
Conservation-authority approval | Work is proposed in a regulated area, floodplain or near a watercourse |
Ministry of Transportation approval | Construction is proposed beside certain provincial highways |
Environmental approvals | Certain property-use changes or contaminated sites are involved |
The complete list of applicable laws is established through Ontario’s Building Code. Which laws apply depends on the project, property and proposed use. (City of Toronto)
A typical residential renovation may have few applicable-law requirements. A custom home beside a ravine, a heritage-property addition or a commercial-to-residential conversion may require several separate approvals.
What Projects May Require a ZAP?
A Zoning Applicable Law Certificate may be obtained for many different types of construction and development proposals.
Common examples include:
New detached homes
New semi-detached homes
Home additions
Second-storey additions
Major house alterations
Duplex conversions
Triplex and multiplex conversions
Laneway suites
Garden suites
Detached garages
Porches
Balconies
Decks
Commercial additions
Commercial renovations
Change-of-use projects
Mixed-use buildings
Driveway widening
Landscaping proposals
Pool-fence enclosures
Accessory structures
The City’s 2026 ZAP fee categories specifically include residential accessory structures, houses, additions, conversions, alterations, laneway and garden suites, non-house buildings and other property-development proposals. (City of Toronto)
What Documents Are Required for a ZAP Application?
The drawings must provide enough information for the zoning examiner to evaluate the complete proposal.
Toronto requires drawings to be:
Prepared on standardized sheet sizes
Drawn to scale
Fully dimensioned
Signed
Dated
Submitted electronically in PDF format
The application also requires the City’s completed Project Review Request form. (City of Toronto)
Site Plan or Survey
The site plan should normally show:
Property lines
Lot area
Rights-of-way
Easements
Existing buildings
Proposed buildings
Overall building dimensions
Distances to property lines
Distances to adjacent buildings
Driveways
Parking areas
Hard landscaping
Soft landscaping
Decks
Sheds
Detached garages
Other accessory structures
Toronto states that the property-line information should be based on a current land survey prepared by a licensed Ontario Land Surveyor. (City of Toronto)
Zoning Summary
The submission should include a comparison between permitted and proposed zoning conditions.
A zoning matrix may identify:
Zoning provision | Permitted | Existing | Proposed |
Lot coverage | 35% | 28% | 34% |
Building height | 10.0 m | 7.5 m | 9.4 m |
Rear-yard setback | 7.5 m | 10.2 m | 7.1 m |
Gross floor area | 0.60 times lot area | 0.42 | 0.58 |
Side-yard setback | 0.9 m | 1.0 m | 0.75 m |
This comparison allows the examiner to see where the proposal complies and where relief may be required.
Floor Plans
The floor plans should be fully dimensioned and identify the use of every space.
Depending on the project, they may show:
Existing rooms
Proposed rooms
Dwelling units
Kitchens
Bathrooms
Bedrooms
Stairs
Entrances
Parking spaces
Mechanical rooms
Accessory areas
Gross-floor-area calculations
Elevations
The elevations may need to show:
Existing and proposed grade
Building height
Roof height
Exterior wall height
Window and door locations
Platforms
Balconies
Decks
Roof projections
Exterior dimensions
Building Sections
Building sections may be needed to confirm:
Building height
Established grade
Basement elevation
Floor elevations
Roof configuration
Number of storeys
Ceiling heights
Relationship between the new and existing construction
The exact drawing package depends on the proposed project.
How Much Does a Zoning Applicable Law Certificate Cost in Toronto?
Toronto’s ZAP fees effective January 1, 2026 are:
Type of ZAP application | 2026 City fee |
Accessory residential buildings and structures, including garages, porches and balconies | $214.79 |
New laneway suite or garden suite | $644.38 |
New house of up to two units, additions, conversions and alterations to houses | $644.38 |
Building other than a house, 300 m² or smaller | $888.14 |
Building other than a house, larger than 300 m² | $1,863.82 |
Other proposals, including driveway widening or landscaping | $214.79 |
Pool-fence enclosure | $214.79 |
These amounts are City application fees only. They do not include:
Architectural drawings
Surveying
Zoning analysis
Planning services
Structural engineering
Committee of Adjustment fees
Arborist reports
Heritage studies
Conservation-authority fees
Building-permit fees
Toronto Municipal Code provides that when the ZAP is used for the related building-permit application, the amount paid for the ZAP is credited against the building-permit fee, up to the amount of the permit fee. (City of Toronto)
How Long Does a ZAP Take in Toronto?
Toronto’s ZAP webpage does not publish a guaranteed processing period comparable to the prescribed 10-, 15-, 20- or 30-business-day review periods for complete building-permit applications.
The total time depends on:
The complexity of the project
The quality of the drawings
Whether a current survey is available
Property-specific zoning exceptions
Whether the proposal complies
The number of zoning deficiencies
Whether additional information is requested
Whether applicable-law approvals are required
How quickly the design team responds
Whether substantial design changes are made
The City includes a maximum of three reviews within one ZAP application. (City of Toronto)
A project that complies with zoning and is supported by a coordinated drawing package may move through the process more efficiently than an addition requiring several variances, heritage review and repeated drawing revisions.
Homeowners should not wait until construction is scheduled to begin before applying for the ZAP.
How Does the Three-Review Limit Work?
The initial City review counts as the first examination.
When the examiner requests corrections or additional information, the applicant can submit a response. The City then completes another examination.
One ZAP application includes:
Initial review
First re-examination
Second re-examination
That is a maximum of three City reviews.
When three reviews have been completed without the certificate being issued, further review requires a new ZAP application and payment of the applicable fee.
A new application may also be required when substantial changes alter the type or scope of the original proposal. (City of Toronto)
This makes it important to respond to every examiner comment carefully and avoid using a resubmission for incomplete or uncoordinated changes.
What Happens After the City Reviews the Application?
The review generally leads to one of two outcomes.
Outcome 1: The ZAP Is Issued
The City issues the certificate when the submitted proposal has been determined to comply with the applicable zoning by-laws and relevant applicable laws.
The issued certificate will be connected to the approved drawings and documents.
The owner can then include the ZAP in the building-permit submission, along with:
The completed building-permit application
Construction drawings
Structural engineering
Mechanical information
Energy-efficiency documentation
Required forms
Proof that identified applicable-law approvals have been satisfied
Applicable permit fees
The ZAP declaration form
The owner is required to complete the Declaration Form – Use of Zoning Applicable Law Certificate when the certificate is used as part of the complete permit application. (City of Toronto)
Outcome 2: The City Issues a Written Notice
When the City cannot issue the certificate, the written notice may identify:
Missing information
Areas of zoning non-compliance
Applicable laws affecting the proposal
Approvals that must be obtained
Drawing corrections
Additional documents required
Toronto Municipal Code requires the written notice to identify additional information needed, areas of zoning non-compliance and relevant applicable-law requirements. (City of Toronto)
The design team must then decide whether to:
Provide the missing information
Correct drawing errors
Revise the design to comply
Apply for minor variances
Pursue a zoning by-law amendment
Obtain an outside approval
Change the proposed use
What Happens When the Plans Do Not Comply With Zoning?
Zoning non-compliance does not always mean the project must be abandoned.
The owner generally has three possible paths.
Option 1: Revise the Design
The fastest and least expensive option may be to modify the project so it complies.
Possible revisions include:
Reducing the addition’s depth
Lowering the roof
Increasing the side-yard setback
Reducing the building area
Removing a balcony
Reducing platform size
Changing a parking layout
Increasing soft landscaping
Moving an accessory building
A compliant project is often described as being permitted as of right.
Option 2: Apply for Minor Variances
Where the requested relief is minor and the proposal otherwise meets the Planning Act tests, the owner may apply to the Toronto Committee of Adjustment.
The zoning examiner’s notice can identify the complete list of variances required for the submitted design.
Toronto strongly recommends obtaining a zoning review before applying to the Committee of Adjustment. Errors or omissions in the variance list can lead to costly delays or another application. (City of Toronto)
Common residential variances involve:
Building depth
Building height
Gross floor area
Lot coverage
Side-yard setback
Rear-yard setback
Platform projections
Parking
Landscaping
The ZAP itself does not approve the variances. Approval must come from the Committee of Adjustment or another authorized decision-maker.
Option 3: Apply for a Zoning By-law Amendment
A zoning by-law amendment may be required when the proposal involves a more substantial change that cannot appropriately be authorized through minor variances.
Examples could include:
A major increase in development density
A use not permitted on the property
A significantly larger building
A major redevelopment
A proposal inconsistent with the existing zoning framework
A zoning by-law amendment is generally more complicated, expensive and time-consuming than a minor-variance application.
How Long Is a ZAP Valid?
A Zoning Applicable Law Certificate may be included with a building-permit application only when the permit application is made within one year of the certificate’s issuance date. The building-permit drawings must also be consistent with the plans approved through the ZAP process. When the permit application does not include a ZAP, or the permit drawings do not correspond with the approved ZAP drawings, Toronto may treat the permit application as incomplete. (City of Toronto) Homeowners should therefore avoid obtaining the certificate too early if the design is still likely to change substantially.
Can the Drawings Be Changed After the ZAP Is Issued?
Minor technical development may be possible as the construction package is completed, but the permit proposal must remain consistent with the drawings approved through the ZAP review.
Changes that affect zoning may invalidate the usefulness of the existing certificate.
Examples include:
Increasing the building area
Increasing building height
Moving the addition
Changing setbacks
Adding another storey
Adding a balcony
Changing the number of dwelling units
Changing the proposed use
Altering parking
Adding a large accessory structure
Substantial changes can require another zoning review or a new ZAP application.
The architectural design should therefore be substantially settled before the application is submitted.
Does a ZAP Guarantee That the Building Permit Will Be Issued?
No.
The ZAP confirms zoning and applicable-law compliance based on the submitted proposal. The subsequent building-permit review still evaluates technical compliance with the Ontario Building Code.
The permit examiner may review:
Structural sufficiency
Foundations
Framing
Fire safety
Fire separations
Spatial separation
Stairs
Guards
Handrails
Insulation
Energy efficiency
Plumbing
HVAC
Ventilation
Building materials
Accessibility, where applicable
A project may comply with zoning but still require revisions during the Building Code examination. Toronto reviews permit applications for compliance with the Building Code, zoning by-laws and other applicable law. (City of Toronto)
ZAP vs. Building Permit
Zoning Applicable Law Certificate | Building permit |
Preliminary zoning and applicable-law review | Technical authorization to construct |
Reviews land use and building placement | Reviews Building Code compliance |
Identifies variances and outside approvals | Reviews construction assemblies and systems |
Does not authorize construction | Authorizes construction after issuance |
Used before or with the permit application | Required before permit-regulated construction begins |
Usually based on planning-level drawings | Requires complete construction documents |
Both processes are important, but they serve different purposes.
ZAP vs. Zoning Use Review
A Zoning Use Review only examines whether a selected use is permitted at a particular location.
It does not include a full review of:
Building placement
Parking
Loading
Built-form requirements
Height
Setbacks
Landscaping
Development plans
The City states that a Zoning Use Review does not require plans and does not examine parking, loading or other conditions connected to the proposed use.
When construction, alterations or a more complete proposal is involved, a ZAP is generally the more appropriate review. (City of Toronto)
ZAP vs. Property Information Report
A Property Information Report provides information about a municipal address, including:
Active building permits
Inspection status
Violations
Work orders
Zoning designation
Property Standards matters
It does not determine whether a detailed proposed development complies with zoning and does not replace a ZAP. (City of Toronto)
Common ZAP Application Mistakes
Using an Old or Inaccurate Survey
The proposed building should be assessed against accurate property lines, easements and rights-of-way.
An outdated survey may not show:
Later additions
Accessory buildings
New easements
Correct property conditions
Recent site changes
Incorrect base information can affect every setback and lot-coverage calculation.
Submitting Incomplete Drawings
A conceptual floor plan may not provide enough information for a complete zoning review.
The City may need:
Full dimensions
Elevations
Sections
Grade information
Building-height calculations
Lot-coverage calculations
Gross-floor-area calculations
Parking dimensions
Landscaping details
Ignoring Former Municipal By-laws
Most Toronto properties are governed by city-wide Zoning By-law 569-2013, but certain properties may also be affected by former municipal by-laws, site-specific exceptions, appeals or special provisions. (City of Toronto)
A zoning analysis based only on the online map may miss an important exception.
Changing the Design During Review
Repeated design changes can use the available review cycles and create new zoning deficiencies.
The owner should approve the major design before the ZAP application is submitted.
Responding to Only Some Examiner Comments
A partial response can lead to another notice and use one of the available reviews.
The response should address every item through:
A written response matrix
Revised drawings
Revision clouds
Updated calculations
Supporting approvals
Consultant documents
Failing to Coordinate the Site Plan, Floor Plans and Elevations
Common inconsistencies include:
Different addition dimensions
Different window locations
Conflicting roof heights
Different setback measurements
Different deck sizes
Incorrect gross-floor-area totals
All drawings should describe the same project.
Assuming the Certificate Is a Permit
The ZAP does not authorize demolition, excavation or construction.
Permit-regulated work should not begin until the required building permit has been issued.
How to Prepare a Strong ZAP Application
A well-prepared submission should follow a coordinated process.
Step 1: Review the Property
Confirm:
Property dimensions
Existing buildings
Zoning designation
Former municipal by-laws
Site-specific exceptions
Heritage status
Ravine or conservation conditions
Easements
Rights-of-way
Existing permits
Step 2: Prepare the Preliminary Design
Develop:
Site plan
Floor plans
Elevations
Building sections
Parking layout
Landscaping plan
Zoning calculations
Step 3: Complete a Detailed Zoning Analysis
Compare the proposal against every relevant regulation.
Do not examine only height and setbacks. Review:
Use
Density
Coverage
Gross floor area
Building depth
Platforms
Parking
Landscaping
Accessory structures
Property-specific exceptions
Step 4: Coordinate the Drawings
Confirm that every drawing uses the same:
Building dimensions
Floor areas
Heights
Grades
Setbacks
Openings
Roof design
Project description
Step 5: Submit the ZAP Application
Submit the required form, drawings and City fee electronically in the prescribed format.
Step 6: Review the City’s Notice
Determine whether the City requires:
Additional information
Drawing revisions
Minor variances
Applicable-law approvals
A change to the design
Step 7: Prepare a Complete Response
Use the review cycle carefully. Submit one coordinated response rather than several partial revisions.
Step 8: Obtain the Certificate and Complete Outside Approvals
Where the notice identifies another applicable law, obtain the required approval.
Step 9: Submit the Complete Building-Permit Package
Use the approved ZAP drawings as the foundation of the permit submission and ensure that the final proposal remains consistent.
Frequently Asked Questions
What is a Zoning Applicable Law Certificate?
It is a preliminary City of Toronto review that confirms whether submitted plans comply with applicable zoning and identifies other laws or approvals relevant to building-permit issuance.
Is a ZAP the same as a building permit?
No. A ZAP does not authorize construction. A separate building permit is still required for permit-regulated work.
Do I need a ZAP for a Toronto home addition?
For an addition submitted through Toronto’s standard House Stream as a complete building-permit application, the City requires an issued ZAP together with the other complete-application documents.
How much is a ZAP for a Toronto house in 2026?
The City fee for a new house, house addition, conversion or alteration is $644.38 as of January 1, 2026. (City of Toronto)
Is the ZAP fee separate from the building-permit fee?
The ZAP fee is paid when the zoning-review application is submitted. Toronto Municipal Code provides for the amount to be credited against the related building-permit fee, up to the total permit fee. (City of Toronto)
How many reviews are included?
A ZAP application includes a maximum of three reviews: the initial examination and up to two re-examinations.
What happens after three unsuccessful reviews?
Further review requires a new ZAP application, new supporting documents and payment of the applicable fee.
How long does the certificate last?
The related building-permit application must be made within one year of the ZAP’s issuance.
What happens when the project does not comply with zoning?
The owner may revise the plans, apply to the Committee of Adjustment for minor variances or pursue a zoning by-law amendment, depending on the nature of the non-compliance.
Can the Committee of Adjustment issue the ZAP?
No. Toronto Building administers the ZAP review. The Committee of Adjustment decides applications for minor variances, consents and certain legal non-conforming uses.
Do I need a survey?
For proposals involving building placement, setbacks or lot calculations, Toronto requires a site plan based on a current land survey prepared by a licensed Ontario Land Surveyor.
Can I submit a permit without a ZAP?
A permit application may be submitted without one, but Toronto considers it incomplete under the standard review streams, and no prescribed review timeframe applies.
Does the ZAP review the structural engineering?
The ZAP focuses on zoning and applicable law. Structural engineering is examined as part of the building-permit process.
Coordinate Your Toronto ZAP and Building-Permit Application With One Team
A Zoning Applicable Law Certificate is more than an administrative form.
It can determine:
Whether the proposed project is permitted
Which variances are required
Whether outside approvals apply
Whether the design must change
Whether the building-permit application can be treated as complete
How efficiently the project moves into technical review
For additions, custom homes and multiplex conversions, zoning decisions also affect structural engineering, HVAC design, construction costs and the final layout.
Completing these services through separate, uncoordinated companies can lead to conflicting drawings and repeated redesigns.
416 Construction provides integrated services for Toronto and the Greater Toronto Area, including:
Property and zoning review
Architectural design
ZAP applications
Committee of Adjustment coordination
Structural engineering
Mechanical and HVAC design
Energy-efficiency documentation
Building-permit applications
Responses to City comments
Full construction
Inspection and occupancy coordination
Our design-build process allows zoning, architecture, engineering, permitting and construction budgeting to be considered together from the beginning.
Contact 416 Construction to discuss your Toronto custom home, addition, multiplex conversion or major renovation.
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