Under Drainage Bylaw 18093, all properties shall provide private drainage systems for stormwater runoff from roofs, parking areas, paved areas, courtyards, and side-yards. All surface drainage for commercial and multi-family properties must be controlled within the site.

Photo of building with required lot grading.

Any property that has an approved Lot Grading Plan (Surface Drainage Plan) is required to submit a Lot Grading Certificate (As-Built Plan) to Development Services, Lot Grading for approval.

The following guidelines help to ensure that your lot and building meet the conditions for lot grading approvals:

The City's Drainage Bylaw provides complete information about lot grading requirements.