ADU Rules: Greenfield vs Milwaukee
How do adu rules rules compare between Greenfield, WI and Milwaukee, WI?
Milwaukee has fewer restrictions than Greenfield.
Greenfield, WI
Milwaukee County
Greenfield's Zoning Code (Chapter 21 of the Municipal Code) does not include a dedicated accessory dwelling unit (ADU) ordinance. The code's residential districts (R-1, R-2, R-2a, R-3, R-3a, R-4a, R-4b, MFR-1, MFR-2, MFR-3) regulate one-family, two-family, and multifamily dwellings, and the term 'accessory dwelling unit' does not appear as a permitted use in the Part 4 district regulations. Construction of a separate, self-contained second residence on a single-family lot generally requires either two-family district zoning (R-2/R-2a) or a rezoning/variance through the Plan Commission and Common Council. The City's zoning authority comes from Wis. Stat. Sec. 62.23.
View full Greenfield rules →Milwaukee, WI
Milwaukee County
Milwaukee allows 1 ADU per lot with a single- or two-family home under MCO Chapter 295. Owner-occupancy required for the principal unit. Detached ADU: min 1.5 ft side, 4 ft rear setbacks.
View full Milwaukee rules →Key Facts Comparison
| Fact | Greenfield | Milwaukee |
|---|---|---|
| - | - | |
| ADUs Allowed | - | 1 per lot (single/two-family homes) |
| Owner Occupancy | - | Required for principal dwelling |
| Side Setback | - | 1.5 feet minimum |
| Rear Setback | - | 4 feet minimum |
| Code | - | MCO Chapter 295 / Chapter 240 |
Highlighted rows indicate differences between cities.
Greenfield FAQ
Milwaukee FAQ
Can I build an ADU on my property in Milwaukee?
Milwaukee allows 1 ADU per lot with a single- or two-family home under MCO Chapter 295. Owner-occupancy required for the principal unit. Detached ADU: min 1.5 ft side, 4 ft rear setbacks.
What are the size limits for an accessory dwelling unit in Milwaukee?
ADUs Allowed: 1 per lot (single/two-family homes). Owner Occupancy: Required for principal dwelling. Side Setback: 1.5 feet minimum. Rear Setback: 4 feet minimum.
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