How Ottawa Calculates Permit Fees
Ottawa building permit fees are set to offset the full cost of permit servicing and code enforcement, and they aren't negotiable. The fee structure depends on whether your project adds new floor area or modifies existing space.
For New Construction & Additions
Projects creating new gross floor area (additions, new builds, garages, coach homes) are calculated by multiplying proposed gross floor area (metric units) by a "Service Index" rate set in the City of Ottawa Comprehensive Building Code Services Fee Schedule. Different building categories have different rates.
The City's Gross Floor Area Fee Schedule, revised 2026-01-01, sets the rate for detached, semi-detached, row houses, stacked townhouses and duplexes at $12.52 per m², and $2.99 per m² for a finished basement in those houses. When a new house is first built, its unfinished basement and attached garage are left out of the area. Minimum fee: $117.
For Renovations & Alterations
Projects modifying existing space without adding new floor area (basement finishing, kitchen/bath renovations, load-bearing wall removal) are calculated by multiplying construction valuation (total project value including materials, labour, overhead, professional fees) by the applicable rate. The City of Ottawa's 2026 rate is $12.75 per $1,000 of assessed valuation, or part of $1,000.
Minimum fee: $117. Combined scope (renovation + addition) = sum of both calculations. The City's own worked example on the 2026 schedule: a two-storey rear addition of 28 m² per floor, a 28 m² finished basement under it, and $45,000 of interior alterations comes to $1,358.59.
Other Permit Types
The City of Ottawa's 2026 Building Code Services Fee Schedule charges $117 per application for plumbing-only work. A demolition permit costs $117 for the first 5,000 sq ft (464.5 m²) of floor area, plus $12.75 for each further 1,000 sq ft. A zoning variance goes to the Committee of Adjustment, which charges its own application fee on a separate City schedule.
Electrical permits come from the Electrical Safety Authority (ESA), a separate authority with separate fees. Start construction before the permit is issued and the same schedule adds a surcharge of 50% of the permit fee, up to $10,000.