Your Ultimate Guide to Ontario Shed Permits in 2026

Building a shed on your property can add valuable storage space and improve your home's functionality. But before you start construction, you need to understand Ontario's shed permit requirements for 2026. Navigating these rules can save you time, money, and legal headaches. This guide breaks down everything you need to know about obtaining a shed permit in Ontario this year.

When Do You Need a Shed Permit in Ontario?

Not every shed requires a permit. Ontario’s building codes and local municipal bylaws set specific thresholds based on size, location, and use.

• Sheds under 108 square feet (10 square meters) usually do not require a permit. This size limit applies to most municipalities but always check local rules.

• Sheds larger than 108 square feet almost always require a building permit.

• So a 12×16 shed (192 sq. ft.), 12×20 (240 sq. ft.), or 14×20 (280 sq. ft.) would all require a building permit in Ontario.

• If your shed will have electrical wiring, plumbing, or a foundation, a permit is mandatory regardless of size.

• Some municipalities require permits for sheds close to property lines or in specific zoning areas.

  
  

  

For example, the City of Toronto requires permits for any accessory structure over 108 square feet or if it includes electrical work. Meanwhile, smaller rural townships may have more lenient rules but still require permits for larger sheds.

How to Apply for a Shed Permit

Applying for a shed permit involves several steps. Here’s a clear process to follow:

1. Check Local Bylaws

   Visit your municipal website or contact your local building department to confirm permit requirements and zoning restrictions.

   
   

2. Prepare Your Plans

   Create a detailed site plan showing where the shed will be located on your property. Include dimensions, distances from property lines, and any existing structures.

   
   

3. Complete the Application

   Fill out the building permit application form provided by your municipality. Attach your site plan and construction details.

   
   

4. Submit and Pay Fees

   Submit your application online or in person. Permit fees vary but expect to pay between $100 and $300 depending on your location and shed size.

   
   

5. Wait for Approval

   The review process can take from a few days to several weeks. The building department may request additional information or changes.

   
   

6. Begin Construction

   Once approved, keep your permit visible on-site during construction. Schedule inspections if required.

   
   

Common Requirements and Restrictions

Understanding typical rules helps avoid permit denial or costly changes later.

• Setbacks: Most municipalities require sheds to be at least 0.6 to 1.2 meters (2 to 4 feet) from property lines.

• Height Limits: Sheds usually cannot exceed 3 meters (10 feet) in height.

• Foundation: Some areas require a concrete slab or proper footings, especially for larger sheds.

• Materials: Local codes may specify fire-resistant materials or prohibit certain types of construction.

• Use Restrictions: Sheds must be for storage or accessory use only, not for living or commercial purposes.

  
  

For example, in Ottawa, sheds must be at least 1 meter from the rear and side lot lines and cannot exceed 3 meters in height. They also require a permit if over 10 square meters.

What Happens If You Build Without a Permit?

Building a shed without the required permit can lead to serious consequences:

• Stop Work Orders: The municipality can order you to halt construction immediately.

• Fines and Penalties: You may face fines ranging from hundreds to thousands of dollars.

• Forced Removal: In some cases, you might have to demolish the shed.

• Resale Issues: Unpermitted structures can complicate home sales or insurance claims.

  
  

Always check permit requirements before starting your project to avoid these risks.

Shed permit application and site plan on desk

Tips for a Smooth Permit Process

• Start Early: Apply for your permit well before you plan to buy or build. Processing times vary.

• Be Detailed: Provide clear, accurate plans and information to avoid delays.

• Consult Professionals: If unsure, hire a contractor or architect familiar with local codes.

• Keep Records: Save copies of all applications, approvals, and correspondence.

• Schedule Inspections: If required, book inspections promptly to stay compliant.

  
  

Do I Need a Permit for My Shed in Ontario?

Under the Ontario Building Code, a detached accessory shed may not require a building permit if it meets ALL exemption requirements, including:

✅ 15 m² (161 sq. ft.) or smaller

✅ One storey

✅ Not attached to another building or structure

✅ Used only for storage purposes

✅ No plumbing

✅ Meets local zoning requirements (setbacks, height, lot coverage, etc.)

Shed Size	Square Footage	Example Sizes	Building Permit Required?
Small Shed	Under 108 sq. ft.	8×10, 8×12	Usually No
Medium Shed	108–161 sq. ft.	10×12, 10×16, 12×12	Usually No, if it meets exemption rules
Large Shed	Over 161 sq. ft.	12×16, 12×20, 14×20	Yes, generally required
Garage / Workshop Style Building	Any size	Buildings with plumbing, living space, or certain uses	Permit may be required regardless of size

Common Shed Sizes Explained

Building Size	Square Feet	Permit? (Ontario General Rule)
8×8	64 sq. ft.	Usually No
8×10	80 sq. ft.	Usually No
8×12	96 sq. ft.	Usually No
10×10	100 sq. ft.	Usually No
10×12	120 sq. ft.	Usually No
10×16	160 sq. ft.	Usually No (right at the limit)
12×12	144 sq. ft.	Usually No
12×14	168 sq. ft.	Usually Yes
12×16	192 sq. ft.	Yes
12×20	240 sq. ft.	Yes
14×20	280 sq. ft.	Yes
16×20	320 sq. ft.	Yes

Small backyard shed with concrete foundation in Ontario

Final Thoughts on Ontario Shed Permits in 2026

Understanding Ontario’s shed permit rules helps you build legally and confidently. Start by checking your local municipality’s requirements, prepare detailed plans, and apply for your permit early. Following these steps protects your investment and ensures your shed adds value to your property without legal trouble.

Disclosure: *Building permit requirements can vary by municipality. Always confirm with your local building department before starting your project.*