Grading & Drainage: Arlington Heights vs Oak Park

Do I need a grading permit for landscaping work?

A grading permit is required if your landscaping work involves fill, excavation, or changes to existing drainage patterns. Minor landscaping that does not alter grading or drainage does not typically require a permit.

Can my neighbor redirect water onto my property?

No. The Village requires that all grading maintain existing drainage patterns and not redirect water onto adjacent properties. If a neighbor's grading work is causing drainage problems on your property, contact Engineering at (847) 368-5800.

When is an engineered retaining wall required?

Retaining walls over 4 feet in height require engineering design by a licensed professional engineer and a building permit. Walls under 4 feet generally do not need engineering but must still comply with setback and drainage requirements.

Do I need a grading permit in Oak Park?

A grading plan is required as part of most building permits. Significant earthwork may require a separate grading permit even without other construction. Contact the Building Division to determine if your project needs one.

Can I change the slope of my yard?

You may regrade your property, but you cannot alter drainage patterns in a way that increases stormwater flow onto neighboring properties. A grading plan showing existing and proposed drainage is typically required.

Can I connect my downspouts to the sewer?

Direct connection of downspouts to the sanitary sewer is not permitted. Downspouts should discharge onto your property's surface where water can infiltrate or be managed through approved drainage methods.