M3-1 Heavy Industry District
Heavy industry — the highest-intensity industrial district, for intensive manufacturing and processing uses.
Example on a 25 × 125 ft lot. No zoning envelope is drawn: M districts set no height limit and no standard setbacks, so bulk is governed by the FAR cap alone (§17-5-0400). The solid building is an illustrative example: a single-story, 35 ft heavy-manufacturing shed filling the full lot. About FAR 1.0, under the 1.2 cap.
Specifications
- Zoning Ordinance reference
- §17-5-0100
View in the Chicago Zoning Ordinance - Floor area ratio (FAR)
- 1.2
- Maximum building height
- —
- Lot area per unit (density)
- No residential density standard (residential not a primary use).
- Minimum lot area
- —
- Rear yard open space
- —
- On-site open space
- —
- Parking requirements
- 1 space per dwelling unit. §17-10-0207.
Setbacks
- Front yard
- None required.
- Side yard
- None required.
- Rear yard
- None required.
Allowed Uses
Curated from the §17-5-0207 use table. P = permitted by-right; S = special-use approval required. Always confirm against the full ordinance text.
- Manufacturing, production & industrial service
- Warehousing, wholesaling & freight movement
- Recycling facilities
- Construction sales & service
- Office
- Building maintenance services
- Business support services
- Animal services
- Gas stations
- Non-accessory parking
- Wireless communication facilities
- Group living (limited residential)
- Waste-related use
- Coke & coal bulk material
- Manganese-bearing material operation
- Adult use
- Eating & drinking establishments
- Entertainment & spectator sports
- Major utilities & services
Reference figures are modeled from the Chicago Zoning Ordinance (Title 17) for general guidance and do not constitute zoning or legal advice. Lot-specific limits depend on frontage, depth, adjacencies and overlays — analyze a specific address for exact figures. Always confirm against the official ordinance.