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Permit guideWhitchurch-StouffvilleBuilding PermitsSecond Suites

Second suite permits

You need a building permit to add a second suite within an existing house, and once you have an approved permit, you need to register your secondary suite with the Town.

From Whitchurch-Stouffville’s own page, checked Oct 2026.

  1. Check whether you need a permit

    • A second suite within an existing house needs a building permit.

  2. Prepare your plans0 of 6

    You need to include the following plans in your application package:

    You need an account to see these 6 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.

  3. Complete the forms4

  4. Submit your application

    • Online, through the Town's Permit Portal
    • Or by email

  5. Pay the fee

    • $1,000
    • Plus any plumbing and additions
    • Cash, cheque or debit

  6. Register your secondary suite1

    After getting approval to build a secondary suite, you need to register it with the Town.

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

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