Retaining Walls: Skokie vs Tinley Park

Do I need a permit for a retaining wall in Skokie?

Yes if the wall is over 4 feet tall (measured from bottom of footing) or supports a surcharge load. Smaller decorative walls without surcharge may not require a permit but must meet drainage rules.

Do I need an engineer for my retaining wall in Skokie?

Yes for any wall over 4 feet. A licensed Illinois structural engineer must seal the drawings submitted with your permit application.

Can my retaining wall change drainage onto my neighbor?

No. Walls must not redirect stormwater onto adjoining properties. Drainage calculations may be required as part of the permit review.

Do I need a permit for a retaining wall in Tinley Park?

Yes for walls over 4 feet tall or supporting any structure or driveway. Smaller decorative landscape walls generally do not require a permit but must not affect drainage.

Do I need an engineer for my retaining wall?

Yes for walls over 4 feet or those supporting loads. Illinois-licensed structural engineer plans are required as part of the permit application.

Can water from my wall drain to my neighbor's yard?

No. Retaining walls must be designed so stormwater does not redirect onto adjacent properties. Drainage issues can trigger village enforcement and civil liability.