Calgary uses “secondary suite” for a self-contained living space inside a primary residence. A detached unit is classed separately as a backyard suite. Confirm which project type applies before using a permit checklist or fee example: the two routes have different application and fee entries.
Check the permit sequence
Calgary’s Secondary Suites Guidebook says a building permit is required to add a new secondary suite. A development permit may also be required, depending on the property and land-use district; where it applies, confirm whether planning approval must come before the building application. Electrical, plumbing, gas, or mechanical permits may be separate from the building permit. The City guidebook outlines exceptions for existing and pre-2018 suites, which should be checked through the City’s legalization guidance rather than treated as a new-suite application.
For a new secondary-suite application, the guidebook lists architectural site plans, floor plans, and elevations. It also identifies additional forms and owner information that depend on the home and project, including an asbestos-abatement form when applicable. Ask Calgary for the current checklist and required application type before commissioning plans; the guidebook is informational and says it is not an official interpretation of current bylaws or codes.
Read Calgary’s fee examples by permit type
The City’s current permit-cost page lists a $403.52 building-permit example for a new secondary suite. It shows $0 for the development-permit fee where planning approval applies, but this does not remove the need to confirm whether that approval is required. The City separately lists $116.50 homeowner electrical and plumbing permit examples. Those homeowner amounts apply only when the owner meets Calgary’s eligibility conditions, including living in the home and doing the work; contractor trade permits use a separate estimator.
The same City page lists $1,302.08 for a new backyard suite. That is a different dwelling classification, not a fee to substitute for an in-home secondary suite. Fees can change, other permits may apply, and a published example is not a complete project quote. Confirm the current fee schedule and your permit category with Calgary before filing.
Treat planning time as one conditional stage
Calgary’s current page gives an approximate 10–12 week timeline for planning approval for a new or existing secondary suite or a backyard suite where that approval applies. It describes a 60-day decision period plus a 21-day advertising or appeal period. The City says these timelines are not guaranteed and depend on application volume, completeness, and timely replies to information requests. This is a planning-approval measure; the page does not give a guaranteed combined duration for building review, construction, inspections, or registration.
Use the City’s current instructions for the property and project, and keep planning, building, trade permits, inspections, and later registration as separate steps. A permit application or fee example does not establish that a suite qualifies or that it will be approved. For a broader preparation checklist, see plans, inspections, and completion documents.