A development application in Ontario can require anywhere from three to more than a dozen supporting studies, confirmed at pre-application consultation and driven by what the site triggers. This guide explains each of the fourteen most common studies: what it is, when it is required, what it must contain, and typical cost and timeline, so you can budget and scope before you file.
The supporting studies are where development budgets are set and where incomplete applications are made. Which studies a site needs depends on its zoning, its natural features, its history, and its context, and no two sites trigger exactly the same list. Each guide below explains one study in plain terms.
Rather than read all fourteen, find out exactly which studies your site triggers. Enter your Ontario address and PreBuildIQ lists them in 60 seconds.
Check my site →PreBuildIQ identifies every required study for any Ontario address in 60 seconds, with the trigger and terms of reference for your specific municipality.
Run a site report →