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Custom Home Building Permits | Toronto & GTA

New Custom Homes • Toronto & GTA

Custom Home Building Permits

Planning a new house means resolving the site, zoning, permit drawings and technical requirements as one project. Building Permit Group prepares and coordinates the residential permit information within our scope for custom homes across Toronto and the GTA.

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Property-specific designPermit drawing coordinationMunicipal submission support

Start with the site

What should be understood before the house design is locked in?

A concept can look right and still conflict with the rules or physical conditions of the property. Early review should identify the constraints that can change the size, position or approval path of the proposed home.

01

Lot and zoning framework

Review the zoning standards that shape the buildable envelope, such as permitted use, setbacks, height and lot coverage, before treating a concept as final.

02

Existing site conditions

Confirm available survey information, existing structures, access and site features that can influence the proposed footprint and construction planning.

03

Separate property approvals

Check whether demolition, heritage, conservation, tree protection or another property-specific approval may need to be addressed outside the building permit itself.

Permit drawings

What information describes the new house for permit review?

The permit set must communicate the proposed construction clearly enough for municipal review. The exact submission list depends on the municipality and project.

Site plan

Property boundaries, proposed building location and other site information needed to place the house accurately on the lot.

Floor plans and elevations

Dimensioned layouts and exterior views showing the configuration, openings, levels and principal design information for the proposed dwelling.

Sections and construction details

Building sections, assemblies, notes and details that explain how key parts of the house are intended to be constructed.

Structural and specialist information

Foundation, framing and other consultant information where the design or submission requirements call for professional or specialist input.

Site-specific technical items

What can require additional documentation beyond the architectural set?

New homes can involve technical information that is not part of every residential project. These items should be identified from the property and proposed construction rather than assumed in advance.

Grading and drainage

Site grading, drainage or related municipal information may be needed for a new house, depending on the municipality and property conditions.

Water and servicing

Service-connection or other utility information may form part of the project. The responsible municipal or regional authority varies by location.

Mechanical and energy information

HVAC, energy-efficiency or related documentation may be required as part of the new-house submission, depending on the applicable requirements.

Tree and natural-feature review

Protected trees, ravines, wetlands, watercourses or regulated areas can trigger separate review or permits before site work proceeds.

Demolition of an existing dwelling

If the property contains an existing house, demolition requirements and the sequence for a replacement project should be confirmed with the applicable municipality.

Professional design responsibility

Where required, qualified designers, architects, professional engineers or other consultants remain responsible for the work they prepare, sign or seal.

Project workflow

How a custom home permit project moves from concept to submission

Each stage answers a different question: what can fit the property, what needs to be documented, which specialists are involved, and what is submitted for review.

1

Review the property

We assess the project goals and available site information to identify the permit-design issues that should be resolved first.

2

Develop the permit design

The house is documented around the site and the applicable design constraints identified for the project.

3

Integrate required disciplines

Applicable structural or specialist information is coordinated with the architectural set so related documents remain consistent.

4

Support municipal review

The package is organized for the applicable submission process, and drawing-related comments within our agreed scope are addressed during review.

Why Building Permit Group

Permit decisions stay tied to the property and the proposed construction

Custom home projects can involve overlapping design, planning and consultant responsibilities. Our role is to keep the permit work organized around the information the municipality needs to review.

When an item falls outside our scope or requires another professional, we identify that distinction rather than presenting every possible service as automatically included.

Municipal coverage

How new-house submission requirements differ across the GTA

Ontario's Building Code establishes provincial construction standards, while local building and planning authorities administer municipal procedures and property-specific requirements.

TorontoToronto's new-house process includes zoning and applicable-law review, and the City currently uses a Zoning Applicable Law Certificate for a complete house-stream building permit application.
MississaugaThe City publishes residential permit drawing and document requirements and directs applicants to the submission information for the specific project type.
VaughanNew-house applications can include dimensioned construction drawings together with grading, structural, mechanical, energy or other supporting information when applicable.
Richmond HillThe City accepts online applications for custom single-family dwellings, with zoning requirements considered as part of project planning.
OakvilleA new-house project can involve building, zoning, grading, servicing, structural, mechanical, energy, tree or conservation documentation depending on the site.
Other GTA municipalitiesThe submission path is checked against the applicable local authority instead of assuming another municipality's checklist applies.

Related services

Other permits and professional services that may connect to a new custom home

A new-house application can involve separate planning, engineering and permit-design services depending on the property and proposed construction.

Building Permit Drawings

Residential drawing packages prepared around the proposed house, site conditions and applicable municipal submission requirements.

Review Building Permit Drawings →

Structural Engineering

Structural coordination where engineered foundations, framing, beams, retaining conditions or other professional design may be required.

Explore Structural Engineering →

Consultant Coordination

Coordination of architectural drawings with applicable engineering, survey, energy or other specialist information within the project scope.

See Consultant Coordination →

Minor Variance

Application support where the proposed design does not comply with a specific zoning provision and a minor variance may be considered.

Explore Minor Variance Support →

Home Addition Permits

Permit drawings and municipal coordination for homeowners comparing a new-build project with expanding the existing house.

See Home Addition Permits →

Next step

Confirm the permit path before the custom-home design is finalized

Share the property address, available survey or drawings, and the type of house you are planning. We can review the permit-design scope and identify the information that should be coordinated next.

Project requirements vary by property and municipality.

Homeowner questions

Questions that often come up before a custom home permit application

Do I need a building permit to construct a new custom home?

Yes. Constructing a new house requires a building permit. The application is reviewed by the local building authority, and the project must also satisfy applicable zoning and other law requirements before a permit can be issued.

What happens if the proposed house does not fit the zoning rules?

The design may need to be revised, or a planning approval such as a minor variance may be considered. The appropriate path depends on the property, the specific zoning provision and the municipality.

Can an existing house be demolished as part of the project?

Demolition can be part of a replacement-home project, but a demolition permit and other municipality-specific requirements may apply. The required sequence should be confirmed before demolition or construction begins.

When is structural engineering involved in a custom home?

Structural engineering may be required for engineered components or structural designs that fall within professional engineering scope. The required involvement depends on the proposed construction, the Building Code and municipal submission requirements.

Can grading, trees or conservation rules affect a new house?

Yes. Depending on the property, separate grading, drainage, tree-protection, conservation, ravine or natural-feature requirements can affect the design and the approvals needed before construction.

Why do custom home permit requirements differ across the GTA?

Ontario's Building Code provides province-wide construction standards, but municipalities administer zoning and permit procedures and may require different supporting documents or site-specific approvals.

Official resources

Government guidance for new-house permit planning

These official resources provide general and municipality-specific starting points for checking the requirements that apply to a proposed new house.

Ontario — Building permits and applicable law City of Toronto — New House permit guide City of Mississauga — Permit drawings and documents City of Vaughan — New Houses and Additions Town of Oakville — New House permit guide
Residential Permit Specialists

Ready to Start Your Building Permit?

Planning a residential renovation, addition, basement, garage, deck or structural alteration? Building Permit Group helps homeowners understand the permit drawings, zoning, engineering coordination and municipal requirements that may apply before construction begins.

Permit Drawings Zoning Review Engineering Coordination Municipal Support