How long does it take to get a building permit for an addition in Ottawa?

How long a permit takes depends on the complexity of your addition, how complete your application is and how busy the City is when you apply. The City doesn't promise a fixed turnaround for every project, so ask Building Code Services for current timelines when you are ready to submit, and plan your schedule around the phases below rather than a single number.

Preparing the application. This phase happens before you submit, and many people underestimate it. It includes hiring a designer, getting structural engineering where needed, ordering a survey and preparing the site plan. It is often the part that takes longer than expected, so start early, especially if you want to build in spring or summer.

The City's review. A plans examiner reviews the drawings and usually sends back comments asking for clarification or more detail. That is routine and isn't a rejection. Common requests involve structural details, energy compliance documentation under SB-12 (an addition must meet a compliance package or the addition table) and grading information.

Revisions. How quickly your designer responds to comments is the part of the timeline you control most. A responsive designer can turn revisions around quickly. Each additional review cycle adds time, and projects that need several rounds usually have unusual structural conditions, zoning problems or an incomplete first submission.

Things that add time:

• A minor variance from the Committee of Adjustment, needed if the addition exceeds a zoning rule, must be decided before the permit is issued. The 2026 urban fee totals $3,759.


• Designated heritage properties and Heritage Conservation Districts need City approval for additions.


• Sites with difficult soils, such as sensitive clay where footing sizes must be engineered, may need more engineering before the drawings are complete.

How to keep it moving. The most common causes of slow permits are incomplete structural information, missing grading details and site plans that don't accurately show property lines and setbacks. A current survey before design starts avoids a lot of trouble. Check your property's zone first, too: Ottawa has two zoning by-laws in effect while appeals are resolved.

Keep in mind that the owner and the contractor are equally responsible for making sure a permit is obtained when required. Contractors who build additions regularly can often recommend designers whose submissions are complete and well organized. You can browse addition contractors in the Ottawa Construction Network directory at justynrookcontracting.com.

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Looking for experienced contractors? The Ottawa Construction Network connects homeowners with qualified professionals:

• Justyn Rook Contracting
• JC Carpentry
• L.L. Renovation
• Eastern Residential Solution
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