Ontario geographic townships: lots and concessions
Ontario predates the rectangular Prairie grid. Land is described by lot and concession within a named geographic township and county, rather than by section, township and range.
Reading a lot-and-concession description
Concessions are long strips running across a township; lots divide each concession. 'Lot 12, Concession 4, Mono Township' identifies one parcel within Dufferin County.
Frequently asked questions
How is Ontario land described?
By lot and concession within a named geographic township and county — for example, Lot 12, Concession 4, Mono Township, Dufferin County. There is no township-and-range or meridian.
Last reviewed June 2026. General information about survey systems — not legal, title, or survey advice.
Sources: Ontario — Office of the Surveyor General, Ontario — Surveyor General glossary.