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.
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What to do next
- Determine whether the lot is urban, rural or inside a Niagara Escarpment designation before choosing a model
- Confirm the existing house type, water/sewer services and current zoning permission for a detached ARU
- Check permitted location, height, floor area, setbacks and service connections against the property rules
- Prepare drawings and submit a complete permit application to Milton Building Services
- Wait for permit issuance before building, complete inspections and register the new unit under the Town program
Official sources behind this page
Milton explicitly requires a building permit before creating an additional residential unit, including a detached coach house or garden suite.
Eligible dwelling types, service connections, Niagara Escarpment planning restrictions, zoning and parcel conditions determine what may be built.
The Town requires a complete permit application with appropriate site plans, drawings, designer forms and supporting information.
Milton requires additional residential units to be registered, including units occupied by family or not rented; the current registration program is a pilot.
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the garden suite guide