How close to the water can I build on my Ontario lakefront property?

In Ontario, how close you can build to a shoreline depends on three overlapping layers of regulation: municipal zoning by-laws, official plan policies, and Conservation Authority permit requirements.

Municipal zoning by-laws typically specify a minimum setback from the high-water mark or the top of the bank for any structure. Setback requirements vary significantly by municipality and by the category of waterbody. Many lakeshore municipalities require setbacks of 30 metres or more from the water for dwellings, but the local zoning by-law is the authoritative source.

Even if the zoning by-law would permit construction at a certain distance, you may also need a permit from the local Conservation Authority if your proposed work falls within the regulated area adjacent to the shoreline. Conservation Authorities impose setback and development restrictions independently of municipal zoning, and both must be satisfied.

If the property is within the Greenbelt, the Greenbelt Plan's key natural heritage and hydrologic features policies add another layer of protection around shorelines and riparian areas.

Before purchasing waterfront property with development in mind, check the specific zoning setbacks in the by-law, confirm whether the property is within a Conservation Authority regulated area, and review any shoreline policies in the official plan. A pre-purchase planning review can reveal whether your intended project is feasible.