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A sloped surface is required to effectively drain water away from all foundation walls and concrete slab-on-grade buildings. This includes areas underneath steps and decks.

Minimum Grade Requirements

  • 10% for first 2 metres with a minimum of 20cm drop for final landscaping.
  • 0.75% for concrete, asphalt or other impervious surface treatment.

The Lot Grading Drawings page illustrates the minimum grade information for different lot types in PDF formats.

Grading Examples

For More Information

Development Services, Lot Grading

2nd Floor, Edmonton Tower
10111 104 Avenue NW
Edmonton, AB

T5J 0J4

Telephone

311 or 780-496-5576

Fax 780-496-2865
Email lot.grading@edmonton.ca

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