We do Residential Addition Plans in order to obtaind the building permit in Toronto, Markham, Aurora, Richmond Hill, Vaughan, Bradford, Brampton, Oakville, Oshawa, Newmarket, Etobicoke, Mississauga, Hamilton all over GTA. Here is what you need to know:

 

1. What is an Addition Permit Plan?

 

An Addition Permit Plan is a collection of architectural and engineering drawings that illustrate the design and construction details of a proposed expansion to an existing building. The goal is to demonstrate compliance with structural, zoning, safety, and environmental regulations.

 

Typical examples of additions requiring a permit:

 

• Extending a house by adding more floor area.
• Building a new room, garage, sunroom, or enclosed porch.
• Adding another floor or mezzanine to an existing structure.

 

How is it Done? (Process & Steps)

 

Step 1: Initial Assessment & Feasibility

 

• Conduct a zoning review to ensure the addition complies with local bylaws.
• Verify setbacks, lot coverage, height restrictions, and floor area ratio.
• Check if a Committee of Adjustment approval is required for minor variances.

Step 2: Preparation of Drawings & Documentation

 

The following documents are typically required:

 

Architectural Drawings

 

• Site Plan: Shows property boundaries, existing structures, proposed addition, setbacks.
• Floor Plans: Detailed layout of existing and proposed structures.
• Elevations: Exterior views of all sides of the building with materials and heights.
• Sections & Details: Cross-sectional views showing construction details, insulation, foundation, etc.

 

Structural Drawings (if applicable)

 

• Framing plans, foundation reinforcement, beam sizes, and load-bearing elements.
• May require an engineer’s stamp if structural changes are significant.

HVAC, Electrical & Plumbing Plans (if applicable)

 

• If new mechanical, electrical, or plumbing systems are included.
• May require additional engineering approval.

Energy Compliance Report (SB-12 Form)

 

• Mandatory for residential additions under the Ontario Building Code.

 

Step 3: Submission to the Municipality

 

• Submit the permit application online or in person through the local Building Department.
• Pay the permit fees (varies by municipality and project size).
• Wait for the plan review process by the municipal building officials.

 

Step 4: Approval Process

 

• The municipality will review compliance with the OBC, zoning bylaws, and other regulations.
• If any issues arise, revisions might be required.
• Once approved, the building permit is issued.

 

Step 5: Inspections During Construction

 

The city conducts on-site inspections at key stages (e.g., foundation, framing, final inspection).

 

3. Who Can Do It?

 

Licensed Architect or Engineer – If structural changes are complex.

BCIN-Certified Designer – If within their scope under the Ontario Building Code.

 

Homeowner (Limited Scope) – In some cases, homeowners can prepare their own plans for small residential projects, but they must still comply with all codes and bylaws.

 

4. What is Delivered?

 

The final product includes:

 

• Complete Architectural & Structural Drawings (digital & printed).
• Zoning Analysis & Compliance Report (if required).
• Energy Efficiency Report (SB-12) for residential projects.
• Stamped Structural Plans (if applicable).
• Permit Application Package ready for submission.

 

5. How is the Submission Process Done?

 

• Online submission through municipal portals or in-person at the local Building Department.
• Fees must be paid based on project size and municipality fee schedule.
• Review period typically takes 2-6 weeks, depending on complexity and municipal workload.

 6. How Long Does It Take?

 

• Preparation of Drawings: 1-4 weeks (depends on project size).
• Municipal Review: 2-6 weeks (varies by city).
• Permit Approval & Issuance: Once approved, immediate issuance.
• Total Time Estimate: 4-10 weeks from design to permit issuance.

 

7. Which Bylaws & Codes are Followed?

 

• Ontario Building Code (OBC) – Covers structural, fire safety, accessibility, and energy efficiency.
• Municipal Zoning Bylaws – Setbacks, lot coverage, height restrictions.
• Property Standards Bylaws – Ensures buildings meet safety and livability conditions.
• Conservation Authority Regulations – If the property is near a floodplain, river, or protected area.
• Heritage Act (if applicable) – If the building is a designated heritage property.