BuildRules/Milton/Basement apartment / secondary suite/Checklist

Milton, Ontario / Project checklist

Milton basement apartment / secondary suite permit checklist

Use a project-specific basement apartment / secondary suite permit checklist for Milton, Ontario: documents, next steps, source review date and official references.

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Focused project answerLast verified Oct 2, 2026
Use this before you submit

6 items to prepare for this project.

This page is the submission checklist. For permit thresholds, size rules, zoning and the full project decision, use the main guide.

Open the main Milton basement apartment / secondary suite rules

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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Preparation checklist · Reviewed 2026-10-02

What to do next

  1. Confirm zoning eligibility
  2. Define the proposed unit and access
  3. Prepare the complete drawing package
  4. Apply before starting construction
  5. Book required inspections during the work

Official sources behind this page

Secondary suitePermit required before work starts

Milton requires a building permit before adding a secondary suite to a home.

Official sourceTown of MiltonBasement Apartments · Secondary-suite permits, drawings, zoning and inspections
Verified2026-10-02Open proof
ZoningConfirm property eligibility first

Milton directs owners to confirm the property’s zoning requirements before applying.

Official sourceTown of MiltonBasement Apartments · Secondary-suite permits, drawings, zoning and inspections
Verified2026-10-02Open proof
Life safety / inspectionsAdditional design and inspections apply

The Town lists fire-separation details and staged building, plumbing and heating inspections for this project type.

Official sourceTown of MiltonBasement Apartments · Secondary-suite permits, drawings, zoning and inspections
Verified2026-10-02Open 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 apartment / secondary suite guide