Permit guideWhitchurch-StouffvilleBuilding PermitsHouses
New house and addition permits
You need a building permit to build a new house of up to three storeys, or to put an addition on an existing house.
Check whether you need a permit
- A new house of up to three storeys needs a building permit.
- An addition to an existing house needs a building permit.
- Only if the property is served by a private sewage system
Add a septic permit, if needed
The Town's Residential page says your permit application may include an on-site sewage permit if your property is served by a private sewage system. Its Septic Permits page sets out what that permit needs:
Septic plans
You need to include the following plans in your application package:
- A site plan identifying the location of all buildings and the sewage system with clearances to structures, wells and property lines
- System drawings and details
- Statement of Design
Septic forms
To apply for a septic permit, please submit the following forms and plans through the Permit Portal or by email.
Septic permit fee
- New or replacement sewage system: $0.70 per litre of daily designed effluent flow, $1,000 minimum
- Expansion of an existing system: $1,000
- Repair of an existing system: $325
Prepare your plans0 of 21
You need to include the following plans and documents in your application package.
You need an account to see these 21 items.It’s free. Use Sign in at the top of the page to create one, then tick the items off on any device and print them as a checklist.
Complete the forms7
Submit your application
- Online, through the Town's Permit Portal
- Or by email
Pay the fee
- $1.80 per square foot (≈ $19.38 per m²)
- Plus $0.65 per square foot (≈ $7.00 per m²) of area for basement finishes
- $220 minimum
- Cash, cheque or debit
- A septic permit has its own fee (step 2)
Written from Whitchurch-Stouffville’s own pages as published on 16 October 2026. The municipality decides what a permit needs: confirm with it before you apply. Legal notice