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Addition

Under the Building Code Act, a building permit is required for the construction of a new building, an addition, or alteration of any building or structure with a building area of over 10 square metres (approximately 108 square feet).

The following are examples of additions:

  • Sunrooms
  • Solariums
  • Attached Garages
  • Porches
  • One and two storey additions

The Ontario Building Code outlines the minimum requirements for various elements, such as framing and foundation requirements, and can be viewed on the Ontario Ministry of Municipal Affairs and Housing website.

Development Information Officers

A Development Information Officer (DIO) can advise on zoning regulations impacting your addition design; such as setbacks to lot lines, lot coverage, and building height. If you require the services of a Development Information Officer, please call 613-580-2424, ext. 23434 or dioinquiry@ottawa.ca

Approximate Cost

Refer to Applicable Fees

Approximate Timeline

Approximate Timeline based on City Council approved enhanced service level:

  • First review - 10 business days

At key stages of building construction, your work must be inspected to ensure that the completed construction complies with the Ontario Building Code. The permit plans and specifications must be on site and made available to the Building Inspector at the time of inspection. To ensure the availability of a Building Inspector, you should book inspections 48 hours in advance. Failure to have the appropriate inspection performed may result in your having to uncover and expose the work for inspection, or other Orders issued, etc.

The Building Inspector's name and phone number are identified on the building permit. For a list of required inspections that may apply based on the proposed addition, please refer to the table below.

Inspection Description
Sewer Lateral Prior to backfill of sanitary and storm sewers and water service. These inspections can be arranged by contacting the following:developmentinspections@ottawa.ca Tel: 613-580-2424 ext. 33246 Fax: 613-580-2627
The following inspections are undertaken by your Building Inspector
Excavation Required prior to placement of concrete footings. The geotechnical soils report confirming soil-bearing capacity may be requested by the Building Inspector, if warranted by on site soil conditions.
Plumbing - Underground Required prior to covering underground plumbing. (Test required)
Foundation Required prior to backfill of foundation.
Plumbing – Rough-In Required at completion of plumbing rough-in, which includes drains, waste, vent and water piping system. (Test Required)
Framing and Mechanical Rough-In Required at completion of structural framing, stairs, including components of fire separation and fire stopping. Completion of rough-in for electrical system, fireplace, ductwork for heating, ventilation and air conditioning. Exterior of building must be weather proofed.
Insulation/Vapour Barrier Required at completion of insulation, air barrier and vapour barrier installation.
Plumbing – Final Required at completion of plumbing system, fixtures and appliances. (Test required)
Occupancy A person may occupy a dwelling provided that an Occupancy Permit has been issued by the Building Inspector. To be eligible there must be no outstanding Building Code Orders and certain building components and systems must be complete and inspected under Division C 1.3.3.
Final Inspection Required at completion of the building.

Effective June 7, 2021, Building Code Service counters at Ben Franklin Place and City Hall will reopen for personal service by appointment only. This includes the submission of permit applications, payment of fees and the issuance of permits.

There are various methods for submitting applications.

Application Forms: Application for a Permit to Construct or Demolish