Grade

(Term variously used and defined in land use by-laws) Ground level at the foundation of a building; usually pre-existing grade, that is, pre-construction; relates to the natural elements in a residential instance and to elements the owner cannot affect, such as sidewalks, in a non-residential context.

Reference

Lazarev v Toronto (City) (2006), 25 MPLR (4th) 85 (Ont SCJ)