How Long Does a Building Permit Take in Ontario?
Understanding building permit timelines is essential for planning any construction project in Ontario. Delays in the permit process can push back your construction start date by weeks or months — costing you money and causing frustration. This guide explains how long building permits actually take across the Greater Toronto Area and what you can do to speed up the process.
Typical Building Permit Timelines in Ontario
Building permit review timelines vary significantly by municipality and project complexity. Here are the general timelines you can expect across the GTA:
Simple residential permits (decks, interior renovations, basement finishing) typically take 10–20 business days (2–4 weeks). Standard residential permits (additions, second storeys, new garages) usually take 20–40 business days (4–8 weeks). Complex residential permits (new homes, legal basement apartments, garden suites) can take 30–60 business days (6–12 weeks). Commercial permits vary widely, typically 6–16 weeks depending on scope and complexity.
These timelines represent the municipal review period only — the time between submitting your application and receiving your permit. They do not include the time needed to prepare your drawings before submission or any resubmission time if your application is returned with comments.
What Causes Permit Delays?
The single biggest cause of permit delays is incomplete or non-compliant applications. When your permit drawings are missing information, contain errors, or do not comply with the Ontario Building Code, the building department returns them with comments — and you go to the back of the review queue when you resubmit. Each round of comments can add 2–4 weeks to your timeline.
Other common causes of delays include zoning non-compliance requiring a minor variance application, missing engineering reports or supporting documents, seasonal backlogs at municipal building departments, and incomplete application forms or missing fees.
How to Speed Up Your Building Permit
The most effective way to speed up your building permit is to submit a complete, code-compliant application the first time. This means hiring a qualified BCIN designer who knows your municipality's specific requirements, including all required drawings and supporting documents, ensuring full compliance with both the Ontario Building Code and local zoning by-laws, and completing all application forms correctly with the proper fees.
At Sandhu Design Build, our BCIN-qualified designer has submitted permits across the GTA and knows what each municipal building department expects. We prepare your application to pass review on the first submission — saving you weeks of resubmission delays.
Pre-Consultation with the Building Department
Many Ontario municipalities offer pre-consultation meetings where you can discuss your project with the building department before submitting your permit application. These meetings help identify potential issues early — including zoning concerns, site plan requirements, and specific documentation needs. We recommend pre-consultation for any complex project, and we attend these meetings with our clients as part of our service.
Get Your Permit Started Today
The sooner you start your permit application, the sooner construction can begin. Contact Sandhu Design Build at (416) 809-0005 for a free consultation. We will assess your project, provide a timeline estimate, and begin preparing your permit drawings so your application gets to the building department as quickly as possible.