Chicago regulates grading and drainage through the Stormwater Management Ordinance (MCC 11-18) and the Building Code. New development must direct drainage away from structures and manage stormwater on-site without adversely affecting neighboring properties.
Under MCC 11-18 and the Chicago Building Code, all new construction and significant alterations must ensure proper grading and drainage. Development must not increase stormwater runoff to neighboring properties. The Department of Water Management reviews drainage plans for regulated developments. Proper grading requires positive drainage away from building foundations. Combined sewer overflow concerns mean that on-site retention and detention are increasingly emphasized. The 2024 Stormwater Manual provides guidance on grading for stormwater management. Downspouts should not be directly connected to the combined sewer system where feasible.
Improper grading causing drainage onto neighboring properties may result in code violation citations of $200 to $500 per day. Failure to comply with stormwater plans carries fines of $500 to $1,000 per day.
Chicago, IL
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Side-by-side rule comparisons with other cities in Cook County.
See how other cities in Cook County handle grading & drainage.
See how Chicago's grading & drainage rules stack up against other locations.
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