This page summarizes Toronto permit information. Use the official city links for the current rules on your address and project.
Toronto’s published permit rules, in plain English:
Toronto says a building permit is required under the Building Code Act for most construction, demolition, additions and major renovations.
Permit review checks proposed work against the Ontario Building Code, zoning and other applicable law.
Toronto lists structural or material alterations—such as adding or removing walls, creating new openings, or enlarging or relocating doors and windows—as work that requires a building permit.
A one-storey storage shed can be exempt when it is no more than 15 m², is detached, is used only for storage and has no plumbing.
Toronto says finishing a house basement can be permit-exempt only when there are no structural or material alterations, no new dwelling unit and no new plumbing.
Examples the City lists as not requiring a building permit include replacing roofing where no structural work is involved, cabinetry/millwork and some same-scope repairs.
Toronto uses Ontario's provincial building-code framework. See the Ontario permit overview for province-wide context; this page focuses on Toronto's municipal process and property-specific approvals.
Key items named by the municipal source:
Choose a project below. “Dedicated municipal source” opens a project-specific city page; “Municipal permit hub” opens the broader official permit source.
A building permit is required for a deck more than 60 cm (24 in) above ground. Toronto’s deck guide also lists the drawings and site-plan information required for a permit application.
Open Toronto’s project guidance ↗Read the general Canada planning guide →A qualifying one-storey storage shed of 15 m² or less can be exempt if it is detached, used only for storage and has no plumbing. Larger or otherwise non-qualifying accessory structures need permit review.
Open Toronto’s project guidance ↗Read the general Canada planning guide →A basement finish can be permit-exempt only when there are no structural/material alterations, no new dwelling unit and no new plumbing. Structural work, new plumbing, underpinning, basement entrances or a second suite change the answer.
Open Toronto’s project guidance ↗Read the general Canada planning guide →Creating a secondary suite is a building-permit project. Toronto’s guide treats a secondary suite as an interior alteration that adds a second dwelling unit and lists required plans plus related plumbing/HVAC requirements.
Open Toronto’s project guidance ↗Read the general Canada planning guide →A residential addition requires a building permit. Toronto’s addition guide calls for site plans, floor plans, elevations, sections and other project-specific documentation.
Open Toronto’s project guidance ↗Read the general Canada planning guide →Interior alterations can require a building permit, including changes to partitions and other material alterations. Toronto’s guide lists floor plans, sections and construction details for these applications.
Open Toronto’s project guidance ↗Read the general Canada planning guide →Adding or removing walls, creating new openings, or enlarging or relocating doors/windows are examples Toronto lists as structural or material alterations that require a permit.
Open Toronto’s project guidance ↗Read the general Canada planning guide →Pool-related work can involve building, enclosure and zoning requirements; confirm the exact package before construction.
Open Toronto’s municipal permit hub ↗Read the general Canada planning guide →Toronto publishes a dedicated garage/carport permit guide. Detached garages and carports are reviewed as accessory structures; attached versions follow the addition process.
Open Toronto’s project guidance ↗Read the general Canada planning guide →Installing or modifying heating or plumbing systems can require permits. Toronto publishes separate mechanical (HVAC) and plumbing/drain permit guidance rather than treating this work as part of a shed or general renovation rule.
Open Toronto’s project guidance ↗Read the general Canada planning guide →9 project cards use a verified dedicated municipal/project source; 1 use Toronto’s broader official permit source.
Source-label rule: “Dedicated municipal source” means we verified a project-specific Toronto page. “Municipal permit hub” means the municipality publishes the answer through a broader permit page or portal. We do not invent a project URL.
Primary authority: Toronto’s official municipal permit information. Project links are labelled by source depth.
Toronto uses Ontario's provincial building-code framework. See the Ontario permit overview for province-wide context; this page focuses on Toronto's municipal process and property-specific approvals.
Open primary Toronto source ↗How Home Permits Canada fact-checks pages →Use these Toronto municipal links before you spend money on final drawings, materials or construction. They are the authority for the current local process.
Toronto sources checked September 13, 2026. Use the linked municipal pages for current forms, fees and rules; Home Permits Canada is independent.
