Complete applications for an addition must include:
- applicable law approval documentation when required
- completed application package
- building permit fees
- building application plot plan
- foundation plan
- floor/ framing plan(s)
- elevation plan
- cross section plan
The information provided should be used as a sample only to help you with creating your application.
Before you start
If your home is serviced by a private sewage disposal system (septic system) the existing sewage system may need to be evaluated to determine if it has the capacity to accommodate the additional load that could be imposed upon it by the proposed addition. Additional bedrooms, size of addition or plumbing fixtures could require an upgrade to the existing septic system. If required the analysis must be prepared by a qualified sewage system designer and provided along with the application submittal. Any changes to the sewage system required as a result of the proposed addition must also be identified and detailed in construction drawings prepared by the sewage system designer.
Please note that prior to applying for a building permit, it is your responsibility to ensure that all necessary approvals or permits have been obtained from other agencies for any Applicable Law identified in the Ontario Building Code that is relevant to your project. These approvals are required as part of a complete building permit application package.
Applying for a permit
Please complete Application to Construct or Demolish form and make sure to include a Plot Plan with your submission. We will need the owner's authorization if you are not the property owner.
A Schedule 1: Designer Information Form is required to be filled out for all submissions. Property owners are exempt from requiring qualifications. All other designers must have appropriate qualifications.
You will need to create an account to apply through our online portal. Be sure to have all you documents ready to attach.
Apply in Person |
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You can apply for a permit, Monday through Friday, 8:30 a.m. to 4:30 p.m. at: Engineering and Development Services Department |
Required design documents
Typically requirements are listed below, additional information may be required.
Your plot plan should include:
- Lot lines including dimensions
- Measurements from the proposed addition in relation to lot lines
- Grading information
- Lot area, existing and proposed building area
- Proposed building height
- Location of overhead electrical conductors (if applicable)
- Location of septic systems and the distances to the addition (if applicable)
- Location and size of any decks or accessory buildings
- North arrow and Municipal address
Your foundation plan should include:
- Footings and foundation walls sizes
- Beam sizes and spans
- Floor joist size, spacing and spans
- Guard, handrail and stair details
- Location of smoke and carbon monoxide alarms
- Location, type and number of jack posts
- Location and size of any egress windows or doors
- Weeping tile and sump pit location (if req'd.)
Your floor/ framing plan(s) should include:
- One floor plan for each floor level proposed
- Wall location and construction
- Beam sizes and spans
- Floor joist size, spacing and spans
- Guard, handrail and stair details
- Identify use of rooms
- Window and door locations including sizes and lintels
- Plumbing fixture locations
- Location of smoke and carbon monoxide alarms
- Exhaust fan size / location and duct size
- Location and construction details of any decks or porches
- Roof construction including beams, rafters, joists or trusses, sizes and direction
Your elevation plan should include:
- The general appearance of the new home
- Location of grade and slope
- Windows and doors sizes
- Window wells and drainage to weeping tile
- Masonry veneer steel angle sizes over openings (as required)
- Exterior wall finish (e.g. siding)
- Landing, guard and stair details (if applicable)
Your cross section plan should include:
- Footing sizes and depths
- Foundation construction and depth including insulation and interior finishes;
- Anchor bolt size & spacing
- Foundation drainage layer, weeping tile & stone covering
- Floor construction
- Wall construction including stud height
- Roof construction including roof pitch and ventilation
- Height from grade to roof peak
Additional Information
Proprietary Products and Materials |
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Not all products or materials sold are approved for use in Ontario as many products fall outside of the material requirements identified in the OBC. These products range from decking materials and guard systems to plumbing and foundation damp proofing systems. Where specific products or system types are required by the OBC any alternative materials or systems must have either a Building Materials Evaluation Commission (BMEC) authorization or a Minister's Ruling to be used in Ontario. |
Engineered Design |
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For houses and small buildings, Part 9 of Division B of the OBC provides prescriptive guidance for designing the structural system of a building using conventional materials. The systems in Part 9 however are subject to a range of limitations as to when they can be used. If a component of a structural system of a building falls outside of the limitations of Part 9 of the OBC, (ie: roof trusses, point loaded beams or aluminum and glass railing systems, etc.) the component or system must be designed in accordance with structural requirements of Part 4 of Division of the OBC. Part 4 design typically requires the services of a professional engineer. |
Information to be provided prior to request of framing inspection:
- Engineered stamped truss drawings and truss layout for roofs constructed of pre-engineered roof trusses
- The floor system design and layout as supplied from the manufacturer when pre-engineered floor joists are used
- Heating and ventilation design (HVAC)
- Where the size of the addition exceeds 20% of the floor area of the existing house confirmation in the form of heat-loss calculations and duct design will be required to be provided to ensure that the existing heating system has the capacity to heat not only the existing house but also the proposed addition.
Required Inspections:
- Excavation prior to pouring footings
- Foundation prior to backfilling
- Framing, Plumbing, Mechanical rough-in prior to insulation
- Insulation, air and vapour barriers prior to covering
- Prior to occupancy
Any proposed changes from the approved plans must be approved by a Building Inspector prior to construction. Failure to have the required inspections performed may result in you having to uncover and expose the work for inspection.
Fees
We determined fees based on our Building By-Law.
| Building permit fee | Plumbing permit fee |
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$10.00 / $1,000.00 construction value, $100.00 Minimum |
$15.00 + $7.00 per fixture, $50.00 Minimum |