Chicago, IL Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- RS1/RS2/RS3 cap
- 30 ft for principal residential buildings
- RT4 cap
- 38 feet
- RM5.5 cap
- 60 ft on lots over 75 ft wide
- RM6/RM6.5
- No fixed cap; Planned Development required
- Governing code
- Zoning Ordinance § 17-2-0311
Summary
Chicago caps principal residential buildings in RS1, RS2, and RS3 single-family zoning districts at 30 feet, with taller limits allowed in denser RT and RM districts.
17-2-0311 Building Height. 17-2-0311-A Standards. All residential buildings in R districts are subject to the following maximum building height standards except as expressly allowed in Section 17-2-0311-B: District Maximum Building Height (feet) RS1 Principal residential buildings: 30 Principal nonresidential buildings: None RS2 Principal residential buildings: 30 Principal nonresidential buildings: None RS3 Principal residential buildings: 30 Principal nonresidential buildings: None
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-74: Current through Council Journal of June 17, 2026).
Full Breakdown
Chicago Zoning Ordinance Section 17-2-0311 sets a flat 30-foot maximum height for principal residential buildings in the RS1, RS2, and RS3 single-family districts, with no cap on accessory nonresidential structures. Height limits rise with density: 35 feet in RT3.5, 38 feet in RT4, up to 47 feet in RM4.5 and RM5 depending on lot frontage, and 60 feet in RM5.5 on wide lots. In RM6 and RM6.5 there's no fixed residential cap, but tall buildings must go through Planned Development approval under Section 17-13-0600. A carve-out exempts residential construction in the Wrigley Field Adjacent Area entirely.
Violations & Fines
Building over the district height cap without a variance or Planned Development approval risks a stop-work order, permit denial, and required alteration or demolition by the Department of Buildings.
Frequently Asked Questions
How tall can a house be in Chicago's RS1 district?
Can I build taller than 30 feet in an RS zone?
Sources & Official References
Other rules in Chicago
Compare Chicago to another location·View the Illinois building setbacks & zoning overview
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Structure Height Limits in Nearby Cities
How other cities in Cook County handle structure height limits.