Project template
Your preparation checklist
Use it as a working list. The final submission still needs to match your actual scope and the City’s current requirements.
0 of 5 ready
Your progress is saved in this browser. Come back whenever you’re ready.
What to do next
- Check zoning feasibility
- Define the addition scope
- Prepare a complete drawing package
- Submit through ePLAN before construction
Official sources behind this page
AdditionBuilding permit required
Markham states that additions, renovation and construction work generally require a building permit.
City of MarkhamBuilding Permit Process · Permit triggers, exemptions, zoning and application requirements
2026-10-01Open proof
ZoningReviewed as applicable law
The City explains that permit review includes applicable laws such as Markham zoning by-laws.
City of MarkhamBuilding Permit Process · Permit triggers, exemptions, zoning and application requirements
2026-10-01Open proof
DesignProject-specific documentation required
A complete submission needs the forms and drawings applicable to the proposed residential work.
City of MarkhamGuide to Building Permits · Secondary suites, required forms and documentation
2026-10-01Open proof
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the home addition guide