Chillicothe, OH Zoning

8 districts. 2 overlays.
This profile is an earlier edition — some fields may be incomplete. An updated profile is in progress.

Overview

Worth knowing
  • R-3 'Older Neighborhood' designation: District specifically targets established residential areas with potentially narrower lots and reduced setbacks
  • Recent UDC adoption: Unified Development Code (Ordinance 59-25) effective December 1, 2025 modernizes zoning structure; pre-UDC districts R-1/R-2/R-3 superseded by new residential district types
  • Three-tiered residential strategy: R-1 (standard single-family), R-2 (alternate single-family), R-3 (historic/older neighborhoods) preserves distinct neighborhood character types

+ 2 more in Quirks & notes

Districts

res_sf 3ind 3com 2
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
R-1Single-Family Residential (R-1)res_sf35 ft[1] / /
R-2Single-Family Residential (R-2)res_sf35 ft[2] / /
R-3Older Neighborhood Single-Family Residential (R-3)res_sf35 ft[3] / /
C-1Limited Commercialcom / /
C-2General Commercialcom / /
I-1General Industrialind / /
IPIndustrial Parkind / /
IRIndustrial Reuseind / /

Confidence: confirmed partial under review not found

Overlays

HD
Historic District Overlay
HP
§1133-3(a)

Designated historic districts and individual landmarks on city zoning map

reviewHistoric Preservation Commission design review required
scopeExterior modifications, new construction, additions, demolition
FP
Floodplain Overlay District
FP
§1133-2(c)

Properties within 100-year floodplain per FEMA Flood Insurance Study

freeboard2 feet above Base Flood Elevation
threshold50% of market value triggers elevation/floodproofing

Adopted building codes

Statewide

2021
2018
2023
2021
IECC (Residential)
2018
IECC (Commercial)
2021

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

Quirks & notes

  • R-3 'Older Neighborhood' designation: District specifically targets established residential areas with potentially narrower lots and reduced setbacks
  • Recent UDC adoption: Unified Development Code (Ordinance 59-25) effective December 1, 2025 modernizes zoning structure; pre-UDC districts R-1/R-2/R-3 superseded by new residential district types
  • Three-tiered residential strategy: R-1 (standard single-family), R-2 (alternate single-family), R-3 (historic/older neighborhoods) preserves distinct neighborhood character types
  • Downtown Enterprise District: New UDC district type encouraging high-density mixed-use development in downtown core
  • Planning Department modernization: City established Planning & Development Department in 2022 to develop first comprehensive plan in 73+ years

Formulas

Definitions

height
Grade to highest point of structure; 2.5 stories or height limit, whichever is more restrictive
lot_coverage
Building footprint / lot area; principal structure only in residential
far
Gross floor area / lot area
du_ac
Dwelling units per gross acre
impervious_cover
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_units_from_density
lot_area_sf * du_ac / 43560
buildable_width_ft
lot_width_ft - setback_side_ft * 2
buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft

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.

Sort by
LOW
HIGH
drag to orbit · scroll to zoom
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

Sources & references

Citations
  1. [1] i
  2. [2] i
  3. [3] i

Research status

Data quality

20%completeness3 confirmed25 partial8 inferred
Documented gaps
  • All specific lot area minimums, lot widths, setbacks for R-1, R-2, R-3 districts
  • Height limits for commercial and industrial districts
  • Lot coverage percentages and FAR values for all districts
  • Parking ratios by use type
  • Density standards (DU/AC) for residential districts
  • Complete Unified Development Code dimensional standards (effective 12/1/2025)
  • Downtown Enterprise District specific parameters (height bonuses, FAR modifications, setback reductions)

Known issues

schema:v1-legacypriority:lowdata:gaps-present

Other cities in this state

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