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πŸ”§ Building Safety/Anti-Mansionization

Anti-Mansionization: Des Plaines vs Tinley Park

How do anti-mansionization rules compare between Des Plaines, IL and Tinley Park, IL?

Des Plaines and Tinley Park have similar restriction levels.

Des Plaines, IL

Cook County

Some Restrictions

Cook County Code Chapter 102 zoning limits floor area, lot coverage, and setbacks in unincorporated residential districts, while many suburban Cook municipalities have adopted mansionization rules capping FAR and bulk for teardowns in established neighborhoods.

View full Des Plaines rules β†’

Tinley Park, IL

Cook County

Some Restrictions

Cook County Code Chapter 102 zoning limits floor area, lot coverage, and setbacks in unincorporated residential districts, while many suburban Cook municipalities have adopted mansionization rules capping FAR and bulk for teardowns in established neighborhoods.

View full Tinley Park rules β†’

Key Facts Comparison

FactDes PlainesTinley Park
County zoningCook County Code Ch. 102Cook County Code Ch. 102
Typical coverage cap25 to 30 percent25 to 30 percent
Height limit35 feet residential35 feet residential
Suburban FAROften 0.4 to 0.5Often 0.4 to 0.5
Variance bodyZoning Board of AppealsZoning Board of Appeals

Highlighted rows indicate differences between cities.

Des Plaines FAQ

Does Cook County cap FAR countywide?

No. The county code uses lot coverage, setbacks, and height for unincorporated areas. Explicit FAR caps come from individual suburban zoning ordinances, so rules vary between municipalities.

Can I tear down and rebuild bigger?

Only within current zoning. Many north shore suburbs require tear-down review, neighbor notice, and bulk-plane compliance. New homes often must be smaller than the previous nonconforming structure unless variances are granted.

Tinley Park FAQ

Does Cook County cap FAR countywide?

No. The county code uses lot coverage, setbacks, and height for unincorporated areas. Explicit FAR caps come from individual suburban zoning ordinances, so rules vary between municipalities.

Can I tear down and rebuild bigger?

Only within current zoning. Many north shore suburbs require tear-down review, neighbor notice, and bulk-plane compliance. New homes often must be smaller than the previous nonconforming structure unless variances are granted.

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