Building Permits for Custom Homes in Toronto — 2026 Step-by-Step Guide

Step 1: Zoning and Site Check

Before finalizing any architectural drawings, your team must confirm your lot's specific zoning rules. These dictate maximum building height, lot coverage, floor space index (FSI), setback requirements from all property lines, and permitted uses.

Use the City of Toronto's interactive zoning map to check your lot's designation. For a definitive ruling, request a Zoning Applicable Law Certificate (ZAP) — this speeds up the permit review process significantly because the zoning examiner's work is already done.

If your design exceeds any zoning limits — for example, it is taller than permitted or sits closer to a property line than the setback allows — you must first apply to the Committee of Adjustment for a minor variance. This process involves a public hearing and adds 3–6 months to your pre-construction timeline.

Step 2: Hire Your Professional Team

A custom home permit package requires plans prepared, signed, and stamped by qualified professionals:

Architect or BCIN-registered designer: Prepares the full architectural drawing set — site plan, floor plans for every level, exterior elevations, building cross-sections, and energy compliance documentation. The designer must hold a valid Building Code Identification Number (BCIN) or be a licensed Ontario architect.

Structural engineer: Provides stamped foundation plans, framing details, beam specifications, and load-path calculations. Required for all new construction.

Additional specialists (as needed): Geotechnical engineer (soil bearing capacity), arborist (if protected trees are on or adjacent to the site), and surveyor (topographical survey and legal lot boundaries).

Step 3: Prepare the Application Package

Use the updated Application for a Permit to Construct or Demolish form, mandatory since February 16, 2026. Your complete application must include:

• Detailed architectural drawings (site plan, floor plans, elevations, sections) — fully dimensioned, drawn to scale, clearly distinguishing existing conditions from proposed construction
• Structural engineering drawings stamped by a licensed engineer
• Designer Information form (Schedule 1)
• Energy Efficiency Design Summary form (SB-12 compliance)
• Tree declaration (if applicable)
• Any pre-approved variances from the Committee of Adjustment

Step 4: Digital Submission

The City of Toronto requires mandatory electronic submission through the Toronto Building ePlans portal. No paper submissions are accepted.

Step 5: Pay Municipal Fees

The 2026 fee structure for new residential construction:

Mechanical, HVAC, and plumbing permits carry additional fees. For the complete schedule, refer to toronto.ca/building-permits.

Step 6: City Review

Your application is reviewed by two separate examiners — a zoning examiner (checking setbacks, heights, coverage, FSI) and a building code examiner (checking structural, fire safety, energy compliance). The Ontario Building Code mandates a 15 business day review period for complete small-building applications.

In practice, the clock only starts when the application is deemed entirely complete. If either examiner identifies a deficiency, they issue a revision request and the timeline pauses until corrections are submitted. Respond to revision requests quickly — delayed responses push your file to the back of the queue.

Realistic Timelines

Step 7: Permit Issuance and Inspections

Once approved, post the permit visibly on-site before construction begins. Book mandatory inspections as work progresses — foundation, framing, rough-ins (plumbing, electrical, HVAC), insulation, and final occupancy. Each inspection must pass before the next construction phase can proceed.

Avoiding Delays

The most common cause of delays is an incomplete first submission. Use the current form version (February 2026), ensure drawings are fully dimensioned and to scale, get your structural engineering stamped, complete the energy efficiency documentation, and address tree protection and heritage requirements proactively. A Zoning Applicable Law Certificate filed in advance eliminates one of the two review streams entirely.

Next Steps

The permit process for a custom home is more involved than for a renovation — but it does not need to be a bottleneck. Assembling the right professional team and filing a complete application the first time is the fastest path. Learn more about our custom home building services.