Building Setbacks & Zoning in Illinois (2026)

Arlington Heights sets yard setbacks by zoning district rather than one blanket citywide number. In the R-3 One Family…

In Aurora's R-4A Two-Family Dwelling District, structures must sit back 30 feet from the front lot line, 20 feet from…

Bolingbrook sets separate front, side, corner-side and rear yard minimums for each residential zoning district. In the…

Champaign's Table IV-A sets minimum front, side, and rear yard setbacks by zoning district, ranging from a 25-foot…

Champaign County zones unincorporated land through its Department of Planning and Zoning. Front setbacks are measured…

Chicago's zoning code sets front, rear, and side yard setbacks by residential district, mostly as a percentage of lot…

Cook County Zoning Ordinance (Ord. 01-O-30) establishes building setbacks varying by district. Side yard setbacks are…

Unincorporated DuPage County's R-1 single-family district requires a 40-foot front yard, 20-foot interior side yards, a…

In Elgin's RC1 Residence Conservation District, § 19.20.135(E) sets a 25-foot minimum street setback, 6-foot side…

Evanston's R1 single-family district requires a 27-foot front yard, 15-foot street side yard, 5-foot interior side…

For accessory buildings in unincorporated Kane County, the required distance from any road right-of-way is 35 feet, and…

County Code § 121-292 tells unincorporated Kankakee County landowners exactly where a setback line starts: from the…

In the R-1 district covering unincorporated Kendall County residential lots, front yards run 100-150 feet from the…

In unincorporated Lake County, § 151.125's dimensional standards tables fix minimum yard setbacks per zoning district…

Macon County's § 155.183 table sets minimum front, side, and rear yard setbacks for every zoning district in the…

Unincorporated Madison County's zoning code sets fixed yard setbacks by residential district: R-1 requires 40-foot…

In unincorporated McHenry County, residential and agricultural principal buildings generally need a 30-foot street…

McLean County Code § 350-36(F) fixes yard setbacks for the unincorporated R-1 Single-Family Residential District: 30…

In Naperville's R1A single-family district, homes must sit back 30 feet from the front and corner side lot lines, with…

Oak Lawn's R-1 single-family zoning sets a minimum 25-foot front yard, side yards of at least 10% of lot width or 5…

Peoria's Unified Development Code fixes minimum front, side and rear yards for every residential zoning district in the…

In Peoria County's R-1 Low Density Residential District, principal structures must sit at least 15 feet from a side lot…

In the R-1 Single-Family Dwelling District of unincorporated Rock Island County, a one- to one-and-a-half story house…

Sangamon County zoning sets minimum front, side and rear yards by district: 30 feet front in the A-1 agricultural and…

Schaumburg sets required front, rear, and side yard setbacks by residential zoning district in Appendix B to the zoning…

In Skokie's R1 Single-Family district, homes must sit back at least 25 feet from the front lot line, keep 2 side yards…

City Code Sec. 155.061(d) sets minimum front, side and rear yards by district: 30 feet front, 5 feet each side and 20…

Unincorporated St. Clair County sets minimum yard setbacks by zoning district in Zoning Code Section 40-3-7. Every…

Tazewell County's zoning Bulk Chart sets a 50-foot rear and 30-foot side setback for principal structures in the A-1…

Tinley Park's Building Code requires every deck, porch, gazebo, trellis, pergola and accessory structure to sit at…

Waukegan's Table 8.10-1 sets minimum yard setbacks by residential district: R1 requires a 40-60 foot front yard and…

Unincorporated Will County sets minimum yard setbacks by zoning district under the county zoning ordinance's lot and…

Winnebago County sets minimum front, side, and rear yard setbacks that vary by residential zoning district, from R-1…

In Arlington Heights' R-3 One Family Dwelling District, the Village's most common single-family zoning classification…

Aurora's R-1 One-Family Dwelling District caps most homes at 35 feet and two and a half stories; religious institution…

Bolingbrook caps residential buildings in its E-R, R-1, R-2 and R-3 districts at two and one-half stories or 35 feet…

Champaign caps building height by zoning district under Zoning Code Sec. 37-217 and Table IV-A. Single-family lots in…

In unincorporated Champaign County, single-family homes in the R-1, R-2 and R-3 districts may rise no higher than 35…

Chicago caps principal residential buildings in RS1, RS2, and RS3 single-family zoning districts at 30 feet, with…

Cook County Zoning Ordinance limits building height by residential district. Height is measured from grade to the…

DuPage County's R-1 single-family district caps building height at 36 feet under Sec. 37-701.4(A), but a lot of 40,000…

Elgin's zoning ordinance does not cap the height of a single-family home itself, but it caps everything built alongside…

Evanston limits principal structures in the R1 single-family district to 35 feet or two and a half stories, whichever…

Kane County limits accessory buildings by number and combined floor area rather than a published height table, and no…

In unincorporated Kankakee County, a single-family home in the R1 district cannot rise above two and a half stories or…

In the R-1 district covering unincorporated Kendall County residential lots, single-family detached dwellings are…

Unincorporated Lake County caps most residential zoning districts at 40 feet, with the R6 multifamily district allowed…

In unincorporated Macon County, Macon County Code § 155.183 caps building height at 35 feet in every single-family and…

In unincorporated McHenry County, principal buildings in agricultural and residential districts are generally capped at…

A principal home in McLean County's R-1 Single-Family Residential District cannot rise above 2 1/2 stories or 35 feet…

Naperville caps most single-family homes at two and one-half stories and thirty-five feet, measured from a datum point…

In Oak Lawn's R-1 single-family district, homes are capped at two and one-half stories and 30 feet, with a narrow bonus…

Peoria's Unified Development Code caps principal residential structures at 35 feet in the A1, RE, and R1 through R5…

Homes in Peoria County's R-1 Low Density Residential District cannot exceed three stories or 36 feet, whichever is…

In the R-1 Single-Family Dwelling District of unincorporated Rock Island County, a house cannot exceed two and one-half…

The county's zoning bulk table caps most residential and agricultural buildings at 35 feet, with the R-3 multi-family…

Schaumburg caps single-family building height at 28 feet in its R-1, R-4, R-6, and R-6C districts, rising to 35 feet or…

Skokie scales single-family building height to lot width in the R1 district: homes on lots under 60 feet wide top out…

Springfield caps building height by zoning district under City Code Sec. 155.058(a): 35 feet in the R-1, R-2, R-3(a)…

St. Clair County caps residential building height at 35 feet across every zoning district that allows a dwelling, from…

Tazewell County caps principal structure height at 36 feet in most unincorporated districts and 40 feet in the light…

Tinley Park's Building Code caps detached, one-story frame garages at 720 square feet and 18 feet of height at the roof…

Waukegan caps principal residential building height at 45 feet in the R1, R2 and R3 Districts, rising to 60 feet in R4…

Will County's zoning code sets no fixed height cap for houses in the E-1 through R-4 residential districts, height…

Winnebago County caps most residential buildings in the R-A through R-2 and R-MH Districts at 35 feet or 2½ stories…

Arlington Heights caps how much of an R-3 single-family lot a house can cover and how much can be paved. Municipal Code…

Aurora limits impervious and building coverage on R-1 single-family lots to 40 percent under the city's zoning code…

Bolingbrook caps how much of a residential lot a structure can cover, from 20 percent in the E-R estate district up to…

Champaign only caps building footprint as a percentage of lot area in its In-Town Districts, ranging from 35% in IT-SF1…

Champaign County's Zoning Ordinance caps building coverage at 30 percent of lot area in the R-1, R-2 and R-3…

In RS, RT, RM4.5 and RM5 districts, Chicago requires 6.5% of lot area (or more per dwelling unit) kept open in the rear…

Cook County Zoning Ordinance limits the percentage of lot area that may be covered by buildings and impervious…

In DuPage County's unincorporated R-5 General Residence District, Sec. 37-705.8(B) caps ground coverage by buildings…

In Elgin's RC1 Residence Conservation single-family district, building coverage is not a flat percentage. A sliding…

In Evanston's R1 single-family district, buildings can cover no more than 30 percent of the lot under City Code §…

Kane County caps accessory-building coverage by combined floor area: 900 square feet on lots of 2 acres or less and…

In the R1 Single-Family Residence District, unincorporated Kankakee County caps lot coverage at 30 percent of lot size…

In the R-1 district covering unincorporated Kendall County residential lots, buildings and structures, including…

Unincorporated Lake County caps impervious surface at 10% to 50% of each lot depending on zoning district, limiting how…

Macon County Code § 155.183's height and area table caps the share of a lot a building may cover in every zoning…

In unincorporated Madison County's R-1 through R-4 single-family districts, Zoning Code § 93.025(B)(6) caps lot…

In unincorporated McHenry County, maximum building coverage is roughly 30-35% in residential/estate districts and…

Single-family lots in McLean County's R-1 Single-Family Residential District cannot exceed 35% lot coverage under…

Naperville limits new teardown and infill homes to 35% building coverage of the lot, or 2,280 square feet, whichever is…

In Oak Lawn's R-1 single-family district, buildings and impervious surfaces together can't cover more than 50% of a…

In Peoria County's R-1 Low Density Residential District, structures may occupy no more than 30 percent of a lot's area…

Schaumburg caps how much of a residential lot can be built on at just 10 percent in the low-density R-1 district…

Skokie zoning caps the impermeable, or hard, surface on a residential lot rather than just building footprint: R1 lots…

Unincorporated St. Clair County caps how much of a lot a building can cover under Zoning Code Sec. 40-3-7's bulk table…

Tazewell County's Rural Residential District caps building footprint at 20 percent of lot area under Zoning Code…

Waukegan limits every accessory structure, alone or combined with other impervious ground cover, to 40 percent of any…

Will County caps building coverage, the roofed footprint of a house and its accessory buildings, at 20% of lot area in…

Winnebago County's Unified Development Ordinance limits impervious surface on single-family lots in the AG, A-1, and…