Zoning › Illinois › DuPage County › Naperville

Naperville, IL Zoning

22 districts. 5 overlays.
This profile is an earlier edition — some fields may be incomplete. An updated profile is in progress.

Districts

com 10res_sf 5res_mf 4ind 3
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
§6-5**R1A**res_sf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**R1B**res_sf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**R2**res_sf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**R3A**res_mf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**R3**res_mf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**R4**res_mf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**R5**res_mf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**E2, E3**res_sf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**AG**res_sf5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**B1**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**B2**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**B3**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**B4**com5,000 sf43 ft0.50.5—225 / 25 / 10
§6-5**B5**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**OCI**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**HS**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**BP**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**TU**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**College/University**com5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**RD**ind5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**ORI**ind5,000 sf35 ft0.50.5—225 / 25 / 10
§6-5**I**ind5,000 sf35 ft0.50.5—225 / 25 / 10

Confidence: confirmed partial under review not found

Overlays

T6
Historic
HP

Applies to: Residential, Commercial, Office, Mixed-Use

coverage adjustment (%)-10
density multiplier-0.2
lot size multiplier0.15
T6
Water Street Tax Increment Financing
spec

Applies to: Residential, Commercial, Office, Mixed-Use

height multiplier-0.05
RIT6
North Downtown
DT

Applies to: Residential, Commercial, Office, Mixed-Use

height multiplier-0.05
FAR multiplier0.05
T6
5th Avenue Study Area
spec

Applies to: Residential, Commercial, Office, Mixed-Use

height multiplier-0.05
FAR multiplier0.05
T6
Tear-Down/Infill Special Restrictions
spec

Applies to: Residential, Commercial, Office, Mixed-Use

height multiplier-0.05

Adopted building codes

No statewide building code

IBC
Local adoption
IRC
Local adoption
NEC
Local adoption
IFC
Local
IECC (Residential)
2024
IECC (Commercial)
2024

Click a code label to open its state-by-state adoption atlas.

Formulas

Definitions

height
Grade to highest point of structure.
lot_coverage
Building footprint / lot area.
far
Gross floor area / lot area.
du_ac
Dwelling units per gross acre.
setback_front
Front property line to nearest building face.
setback_side
Side property line to nearest building face.
setback_rear
Rear property line to nearest building face.
parking
Spaces per dwelling unit unless noted.

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage
max_gfa_sf
lot_area_sf * far
buildable_width_ft
lot_width_ft - setback_side_ft * 2
buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft
max_stories_approx
max_height_ft / 10

Massing explorer

Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.

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Max height
— ft
——
Floor area ratio
—
——
Lot coverage
—%
——
Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
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District Category Height FAR Coverage Setbacks Parking Density Min lot Overlays

Research status

Data quality

25%completeness78 confirmed65 partial164 inferred
Documented gaps
  • Quirks not populated — requires markdown source review

Known issues

schema:v1-legacypriority:lowdata:gaps-present

Other cities in this state

Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.

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