Overview
Worth knowing
- Dual regulatory system: use-based zoning districts + independent height districts (1-9) mapped separately. [confirmed]
- Form-based Urban Overlay layered on top of traditional Euclidean use-based zoning. [confirmed]
- PUD overlay provides flexibility without traditional variance process. [confirmed §334]
+ 3 more in Quirks & notes
Districts
res_mf 5ind 3res_sf 2com 2
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| R1 | Single-Family R1 | res_sf | —[4] | —[5] | — | — | — | — | —[1] / —[2] / —[3] |
| R2 | Single-Family R2 | res_sf | —[9] | —[10] | — | — | — | — | —[6] / —[7] / —[8] |
| R3 | Multi-Family R3 | res_mf | — | —[11] | — | — | — | — | — / — / — |
| R4 | Multi-Family R4 | res_mf | — | —[12] | — | — | — | — | — / — / — |
| R5 | Multi-Family R5 | res_mf | — | —[13] | — | — | — | — | — / — / — |
| R6 | Multi-Family R6 | res_mf | — | —[14] | — | — | — | — | — / — / — |
| RMF | Multi-Family RMF | res_mf | — | —[15] | — | — | — | — | — / — / — |
| LR | Local Retail | com | — | —[16] | — | — | — | — | — / — / — |
| GR | General Retail | com | — | —[17] | — | — | — | — | — / — / — |
| I1 | Semi-Industry I1 | ind | — | —[18] | — | — | — | — | — / — / — |
| I2 | General Industry I2 | ind | — | —[19] | — | — | — | — | — / — / — |
| I3 | Heavy Industry I3 | ind | — | —[20] | — | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
UO
Urban Overlay
DTForm-based overlay on designated urban corridors and downtown areas
| form | Street-wall requirements, active ground-floor uses, parking screening |
|---|---|
| purpose | Encourage pedestrian-oriented urban form |
DR
Design Review Districts
HPDesignated design review areas
| review | Design review required for exterior changes and new construction |
|---|---|
| scope | Architectural design, materials, scale, massing |
LHD
Historic Districts & Landmarks
HPDesignated local historic districts and individual landmarks
| review | Certificate of Appropriateness required |
|---|---|
| scope | Exterior alterations, new construction, demolition |
FPO
Floodplain Overlay
FPFEMA-designated floodplain areas
| restriction | Development restrictions within floodplain boundaries |
|---|
PRO
Pedestrian Retail Overlay
CORDesignated pedestrian retail corridors; requires 75% LR/GR underlying base zoning
| ground_floor | Active retail/service required at street level |
|---|---|
| base_requirement | 75% of underlying zoning must be LR or GR |
PUD
PUD Overlay
PDPlanned Unit Development application
| flexibility | Allows departure from standard dimensional and use requirements |
|---|---|
| approval | Two-stage approval optional per §334.04 |
UG
Urban Garden District
specDesignated urban agriculture areas
| uses | Community gardens, urban farms, ancillary structures |
|---|
HD-1
Height District 1
specHeight district mapped independently of use district
| max_height_ft | 35 |
|---|
HD-9
Height District 9
specHeight district mapped independently of use district
| max_height_ft | 900 |
|---|
Adopted building codes
Statewide
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- Dual regulatory system: use-based zoning districts + independent height districts (1-9) mapped separately. [confirmed]
- Form-based Urban Overlay layered on top of traditional Euclidean use-based zoning. [confirmed]
- PUD overlay provides flexibility without traditional variance process. [confirmed §334]
- Historic preservation overlay operates through design review, not dimensional modification. [confirmed §341.04]
- Pedestrian Retail Overlay requires 75% LR/GR underlying zoning to apply. [confirmed §343.23]
- Two-stage PUD approval process is optional, not mandatory. [confirmed §334.04]
Formulas
Definitions
- height
- Per Height District designation (1-9). Separate from base use district.
- lot_coverage
- far
- du_ac
- impervious_cover
- setback_front
- setback_side
- setback_rear
- parking
Capacity calculations
- max_footprint_sf
lot_area_sf * lot_coverage- max_gfa_sf
lot_area_sf * far- 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- buildable_envelope_sf
buildable_width_ft * buildable_depth_ft- max_stories_approx
max_height_ft / 10- max_gfa_from_envelope
min(buildable_envelope_sf * max_stories_approx, max_gfa_sf)- parking_required
units * parking
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
Max height
— ft
——
Floor area ratio
—
——
Lot coverage
—%
——
Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
Copy zoning profile
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| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
Citations
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Research status
Data quality
30%completeness41 confirmed20 partial12 inferred
Documented gaps
- Base district dimensional standards require eLaws portal access
- Height district to base district correlation unresolved
- Multi-family density standards not located
- Parking standards (Ch. 347) not accessed
- Commercial and industrial district parameters unresolved
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.