A straightforward GTA house renovation may receive its first municipal review in about 10 business days once the application is complete. That does not promise an issued permit 10 days after you first upload drawings. Prescreening, zoning, other approvals, corrections, and resubmissions live outside that attractive little number.
Why is a 10-day review not a 10-day permit?
Municipalities publish targets for specific stages. A statutory first review generally starts only when an application is accepted as complete. The reviewer may then issue comments instead of the permit. Your designer answers those comments, the city reviews the resubmission, and the cycle continues until the plans satisfy the requirements and all applicable-law conditions are cleared.
Toronto is especially explicit: its House Stream reviews complete house applications within 10 business days, but an application missing the required Zoning Applicable Law Certificate is incomplete and has no review time frame. Eligible Express projects have a three-business-day review goal. A goal is useful. It is not permission to schedule demolition on Friday.
What timelines do GTA municipalities publish?
Swipe to compare
| Municipality | Published stage | What it does not promise |
|---|---|---|
| Toronto | 10 business days for a complete House Stream first review; 3-day goal for eligible Express work | Three days from first inquiry to permit |
| Mississauga | About 7-10 business days to prescreen, then 10 days for a complete residential first review | The city also publishes a 7-week average to issue residential-alteration permits |
| Markham | 10-day first-review target for a complete house application; page says permits can take 10-40 days | That incomplete drawings or other approvals fit inside 10 days |
| Richmond Hill | Prescreening followed by a formal application | A universal total time; the page does not publish one for every renovation |
Mississauga's permit time-frame page is a helpful reality check. It separates prescreening, first review, resubmissions, and average issuance. It says a residential alteration averages seven weeks and a second unit averages 10 weeks, while each resubmission can add two or more weeks. These are reported averages, not a guarantee for your address.
Markham similarly separates its first-review targets from the broader 10-to-40-day statement. Richmond Hill describes a two-stage prescreening and formal application process. Check the current municipal page again when you apply; service standards and submission systems can change.
What makes a permit application complete?
A complete package usually needs the signed application, fees, properly scaled drawings, project-specific forms, and any required zoning or applicable-law approvals. Structural, mechanical, plumbing, energy, heritage, conservation-authority, or other documents may apply. Our guide to zoning, conservation, and building approvals explains why one approval can wait for another.
The fastest useful move is not asking the reviewer to go faster. It is submitting a coordinated package that answers the predictable questions. If the project needs a qualified designer or engineer, settle that before upload using our guide to who can draw Ontario renovation plans.
Where does the permit schedule usually slip?
- The property needs zoning, heritage, conservation, or another applicable-law decision first.
- Drawings disagree with each other or omit dimensions, assemblies, or structural details.
- The application describes a smaller scope than the plans actually show.
- City comments wait for the owner, designer, engineer, or contractor to coordinate an answer.
- A correction solves one sheet but creates a conflict on another.
Can construction start while the permit is under review?
Do not start permit-required work merely because the application was submitted. Wait for the issued permit and approved drawings unless the municipality has granted a specific lawful authorization for an early scope. Starting early can create stop-work orders, redesign, removal of concealed work, and a schedule that becomes longer in a very committed way.
What should I do today?
- Write the exact renovation scope, including plumbing, structure, new rooms, entrances, and unit count.
- Open the current permit checklist for your municipality and identify every pre-approval.
- Ask the designer for a submission date, not just a drawing-start date.
- Plan one owner/designer review before upload so names, dimensions, and scope agree.
- Treat permit issuance, not first review, as the construction scheduling gate.
