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
- Write the detailed basement scope
- Identify walls, columns, windows and plumbing changes
- Prepare the project drawings
- Submit through Markham’s current ePLAN process
Official sources behind this page
New basement roomsPermit required
Markham lists construction of separate rooms in a basement among work requiring a building permit.
City of MarkhamBuilding Permit Process · Permit triggers, exemptions, zoning and application requirements
2026-10-01Open proof
Structural alterationPermit required
The City lists structural alterations such as adding or removing basement columns or structural walls as permit-required.
City of MarkhamBuilding Permit Process · Permit triggers, exemptions, zoning and application requirements
2026-10-01Open proof
New plumbingPermit required
Markham lists installing new plumbing piping among permit-required work.
City of MarkhamBuilding Permit Process · Permit triggers, exemptions, zoning and application requirements
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 basement renovation guide