What Drawings Are Needed for a Building Permit?

Most Ontario building permit applications need drawings that clearly show the existing conditions, the proposed work and how the project is intended to comply with applicable requirements. The exact drawing set varies by project, but it often includes floor plans, elevations, sections, construction details and a site plan.

Direct answer: For a typical building permit, expect a coordinated drawing package rather than a single sketch. Existing and proposed floor plans show layout and use; elevations and sections explain height, exterior work and construction; and a site plan locates the project on the property. Structural details, HVAC, plumbing, grading, survey, energy or other technical information may also be required when those systems or site conditions are affected. The municipality reviews the submission against the Ontario Building Code, zoning and other applicable law, so the final drawing list depends on the property and the actual scope of work.

Floor plans

Show the existing and proposed layout, room uses, dimensions, openings and work being changed.

Elevations and sections

Show exterior changes, heights, assemblies and vertical relationships where required.

Site plan

Shows property/site information, building location, setbacks and other site data where the project requires it.

Technical coordination

Structural, HVAC, plumbing and other information is added or coordinated when the permit scope requires it.

Property and municipality still matter

This answer is a practical starting point, not a permit decision for every property. Zoning, existing conditions, applicable law, project size and the municipality’s current application guide can change what is required.

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Official referenceCity of Toronto — Building Permit Application Guides ↗

Reviewed against current municipal permit guidance: August 2026. Requirements are confirmed for the actual property and project before design/submission.

Need drawings for this project?

Send the property address, what you want to build and any survey, existing drawings, photos or municipal comments you already have.

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