Evanston, IL Environmental Rules: Grading & Drainage (2026)

Evanston's building code and public works standards require a grading permit for earthwork that alters existing drainage patterns. Any fill, excavation, or regrading that changes the direction or volume of stormwater flow requires approval from the Community Development Department. A grading plan prepared by a licensed professional engineer is required for projects involving more than 50 cubic yards of fill or excavation, or any work within 25 feet of a property line that could affect drainage to adjacent properties. The plan must show existing and proposed contours, drainage patterns, erosion control measures, and downstream impacts. All grading must maintain positive drainage away from building foundations. Stormwater must not be redirected onto neighboring properties. Connection to the city storm sewer requires a permit from Public Works. The MWRD Watershed Management Ordinance also applies to grading projects that affect stormwater conveyance. In lakefront areas, grading near bluffs requires additional review due to erosion and stability concerns. Contact Community Development at (847) 448-4311 for grading permit applications and Public Works at (847) 448-4311 for storm sewer connections.