Commercial/Multi-Family/Industrial/Public Building Alteration Permit

A building permit is required for alterations and additions - interior or exterior - to an existing commercial, multi-family, industrial or public building, including a change of occupancy type (i.e., office use to daycare use) in a building or commercial rental space

For alterations within a commercial rental suite or building to accommodate a new tenancy, or for improvement that do not include a change of occupancy type, refer to the Leasehold Improvement page.

What information is required for the building permit?

Applications must include the following:

• Building Permit Application
• Appointment of Agent (PDF) - if you are not the current registered owner

Specific permit requirements for alterations, additions, and change of use permits will vary, depending on the size and complexity of the proposed project. Careful judgement by the Coordinating Registered Professional, designer, or professionals involved will be required to determine what professionals, drawings, and schedules will be required. The following guides and checklist should assist in providing complete application:

• Building Envelope Repairs
• Change of Occupancy
• Part 3 Commercial/Multi-Family/Industrial Building Permit Application Checklist
• Part 9 Commercial/Multi-Family/Industrial Building Permit Application Checklist
• Tenant Improvement Building Permit Application Checklist

Is this a Heritage building?

• Heritage Building Renovations and Alterations

Related Information

• Accessibility Requirements for Persons with Disabilities
• Daycare – Conversions to Assembly Occupancy
• Hazardous Materials Report Form
• Isometric Plumbing Drawings Requirements
• Restaurants & Take-Outs - Tenant Improvement Building Permit Application Checklist
• Commercial Cooking Equipment Exhaust and Replacement Air Systems