BuildRules/Newmarket/Shed / accessory structure/Checklist

Newmarket, Ontario / Project checklist

Newmarket shed / accessory structure permit checklist

Use a project-specific shed / accessory structure permit checklist for Newmarket, 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

4 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 Newmarket shed / accessory structure 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. Measure floor area
  2. Confirm plumbing and intended use
  3. Check setbacks, height and lot coverage
  4. Apply if the permit threshold is exceeded

Official sources behind this page

Detached structure sizePermit required over 15 m²

Newmarket lists detached structures greater than 15 square metres as requiring a building permit.

Official sourceTown of NewmarketBuilding and Renovating · Permit triggers for decks, sheds, basements, entrances and ARUs
Verified2026-10-02Open proof
Small standalone buildingTypically permit-exempt at 15 m² or less without plumbing

Newmarket lists standalone buildings under 15 m² with no plumbing among activities that typically do not require a permit.

Official sourceTown of NewmarketBuilding and Renovating · Permit triggers for decks, sheds, basements, entrances and ARUs
Verified2026-10-02Open proof
ZoningStill applies

The Town directs owners to check setbacks, building height and lot coverage even when a shed does not need a permit.

Official sourceTown of NewmarketBuilding and Renovating · Permit triggers for decks, sheds, basements, entrances and ARUs
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 shed / accessory structure guide