ADU Rules: Skokie vs Tinley Park
How do adu rules rules compare between Skokie, IL and Tinley Park, IL?
Skokie and Tinley Park have similar restriction levels.
Skokie, IL
Cook County
Skokie's zoning code does not broadly permit accessory dwelling units (ADUs) in single-family residential districts. Two-flat and multi-family zones permit multiple dwellings by right. Some legacy in-law arrangements exist but new ADUs are generally not permitted without a zoning variance. The Village has studied ADU policy but has not adopted a broad authorization ordinance as of the most recent code updates.
View full Skokie rules →Tinley Park, IL
Cook County
Tinley Park does not have a permissive accessory dwelling unit (ADU) ordinance. Second kitchens, separate dwelling units, or rental of a secondary unit on a single-family lot are generally not permitted in residential zoning districts. Some properties with legal non-conforming two-family status may exist, but creating new ADUs requires a zoning variance.
View full Tinley Park rules →Key Facts Comparison
| Fact | Skokie | Tinley Park |
|---|---|---|
| Single-Family Zone | ADU not permitted | - |
| Two-Flat Zones | Multi-unit by right | - |
| Variance Required | ZBA discretionary process | - |
| Compare Evanston | Allows ADUs | - |
| Compare Chicago | Allows ADUs in pilot areas | - |
| ADU Ordinance | - | No specific allowance |
| Single-Family Districts | - | One unit per lot |
| Second Kitchens | - | Additional review required |
| Variance Route | - | ZBA approval rare |
| Non-Conforming | - | May retain if pre-existing |
Highlighted rows indicate differences between cities.
Skokie FAQ
Can I build an ADU on my Skokie property?
Generally no in single-family zones without a zoning variance. Two-flat and multi-family zones permit multiple dwellings. Unlike Evanston and Chicago, Skokie has not adopted a broad ADU authorization ordinance.
What about a basement apartment for a family member?
An independent second dwelling unit with its own cooking, sleeping, and bathroom facilities is not permitted in single-family zones. Shared family living within one household is allowed; a separately rented unit is not.
Could Skokie adopt ADU rules in the future?
Possibly. The Plan Commission has discussed ADU policy in the context of housing needs. Follow Village Board agendas and Plan Commission notices for developments.
Tinley Park FAQ
Can I build an ADU on my Tinley Park property?
Generally no. Tinley Park's single-family zoning districts permit only one dwelling unit per lot and there is no specific ADU ordinance. A zoning variance would be required and is rarely granted.
Can I finish my basement as an in-law suite?
You may finish a basement as part of the single-family home including a bedroom and bathroom, but a second kitchen or separate entrance creating an independent unit is not permitted without zoning approval.
My property is listed as two-family — can I rent both units?
If the property was legally established as a two-family before current zoning, it may have legal non-conforming status. Confirm with the Community Development Department before advertising or renting.
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