Retaining Walls: Evanston vs Orland Park
How do retaining walls rules compare between Evanston, IL and Orland Park, IL?
Evanston and Orland Park have similar restriction levels.
Evanston, IL
Cook County
Evanston requires a building permit for retaining walls over 4 feet in height (measured from the bottom of the footing to the top of the wall). Walls over 4 feet require engineered plans stamped by a licensed structural engineer. Smaller retaining walls may be built without a permit but must meet setback requirements.
View full Evanston rules →Orland Park, IL
Cook County
Orland Park requires a building permit for retaining walls over 4 feet in height (measured from base footing). Walls over 4 feet require engineered drawings stamped by a licensed Illinois structural engineer.
View full Orland Park rules →Key Facts Comparison
| Fact | Evanston | Orland Park |
|---|---|---|
| Permit Threshold | Over 4 feet requires permit | Most walls require permit |
| Engineering | Required for walls over 4 ft | - |
| Setback | 2 ft from property lines | - |
| Drainage | Must be addressed in design | - |
| Contact | (847) 448-4311 Community Dev | Building (708) 403-6200 |
| Engineering Required | - | Walls over 4 ft or w/ surcharge |
| Guard Rail | - | Often required if 30+ in drop |
| JULIE Locate | - | Required (call 811) |
Highlighted rows indicate differences between cities.
Evanston FAQ
Do I need a permit for a retaining wall in Evanston IL?
Yes, if the wall exceeds 4 feet in height from the bottom of the footing to the top. Engineering plans from a licensed structural engineer are required for permitted walls.
How close to the property line can I build a retaining wall in Evanston?
Retaining walls must be set back at least 2 feet from property lines unless adjacent to the public right-of-way. Check with Community Development for your specific situation.
Can I build terraced retaining walls to avoid the permit requirement?
The city may treat multiple terraced walls designed to circumvent the 4-foot threshold as a single wall requiring a permit. Consult Community Development before building.
Orland Park FAQ
Do I need a permit for a retaining wall in Orland Park?
Yes for most walls. Walls over 4 feet or supporting a slope/structure require engineered plans and a full permit.
Who can design a tall retaining wall in Orland Park?
Walls over 4 feet or with surcharge require drawings stamped by a licensed Illinois structural or professional engineer.
Do I need a railing on top of my retaining wall?
If the drop on the high side exceeds 30 inches and the wall is in a walking area, a guard rail is typically required by the building code.
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