Oak Lawn's zoning code limits building height by district, typically 35 ft in single-family districts and higher in business and multi-family zones. Proximity to Midway Airport triggers additional FAA Part 77 obstruction review.
Residential R-1/R-2 districts in Oak Lawn generally cap principal structures at 35 ft, with accessory structures limited to lower heights. Business, office, and multi-family districts allow taller buildings with additional setback, landscaping, and design standards. Because the Village sits immediately adjacent to Chicago Midway International Airport, FAA Part 77 imaginary surfaces extend over much of Oak Lawn. Developers of taller structures, cranes used in construction, rooftop antennas, and similar vertical structures must file FAA Form 7460-1 and undergo obstruction evaluation if they penetrate Part 77 surfaces. The Village may require proof of FAA no-hazard determination before permitting. Rooftop mechanical equipment, parapets, and architectural features have defined exemptions but still count toward overall obstruction analysis.
Exceeding zoning height limits: stop-work orders and fines up to $750 per day. FAA Part 77 violations can trigger federal enforcement and require modification or removal of the offending structure.
Oak Lawn, IL
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Side-by-side rule comparisons with other cities in Cook County.
See how other cities in Cook County handle structure height limits.
See how Oak Lawn's structure height limits rules stack up against other locations.
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