Milwaukee, WI Accessory Structures: Tiny Homes (2026)
Tiny home rules in Milwaukee, WI, covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds, determine where they are legal and how they get permitted.
Key Facts
- On Wheels
- Prohibited as dwelling
- On Foundation
- UDC compliant only
- Min Size
- Around 400 sq ft
- RV Parking
- 14-day limit
Summary
Milwaukee does not permit tiny homes on wheels as permanent dwellings. Tiny houses on foundations must meet the Wisconsin Uniform Dwelling Code minimum 400 square feet.
2017 WISCONSIN ACT 67. An Act to renumber and amend 59.694 (7) (c) and 62.23 (7) (e) 7.; to amend 59.69 (10e) (title), 59.69 (10e) (a) 1., 59.69 (10e) (b), 60.61 (5e) (title), 60.61 (5e) (a) 1., 60.61 (5e) (b), 62.23 (7) (hb) (title), 62.23 (7) (hb) 1. a. and 62.23 (7) (hb) 2.; and to create 59.69 (5e), 59.694 (7) (c) 1., 59.694 (7) (c) 3., 60.61 (4e), 60.62 (4e), 62.23 (7) (de), 62.23 (7) (e) 7. a., 62.23 (7) (e) 7. d., 66.10015 (1) (e), 66.10015 (2) (e), 66.10015 (4), 227.10 (2p) and 710.17 of the statutes; relating to: limiting the authority of local governments to regulate development on substandard lots and require the merging of lots; requiring a political subdivision to issue a conditional use permit under certain circumstances; standards for granting certain zoning variances; local ordinances related to repair, rebuilding, and maintenance of certain nonconforming structures; and the right to display the flag of the United States. 62.23 (7) (de) Conditional use permits. 1. In this paragraph: a. "Conditional use" means a use allowed under a conditional use permit, special exception, or other special zoning permission issued by a city, but does not include a variance. b. "Substantial evidence" means facts and information, other than merely personal preferences or speculation, directly pertaining to the requirements and conditions an applicant must meet to obtain a conditional use permit and that reasonable persons would accept in support of a conclusion. 2. a. If an applicant for a conditional use permit meets or agrees to meet all of the requirements and conditions specified in the city ordinance or those imposed by the city zoning board, the city shall grant the conditional use permit. Any condition imposed must be related to the purpose of the ordinance and be based on substantial evidence.
Full Breakdown
Milwaukee Chapter 295 treats tiny houses on wheels as recreational vehicles and prohibits their use as permanent dwellings inside the city. Tiny houses on permanent foundations may be built if they meet the Wisconsin Uniform Dwelling Code, including a minimum dwelling area of around 400 square feet, minimum ceiling heights, egress windows, and full mechanical systems. Tiny homes as ADUs (Accessory Dwelling Units) are not yet broadly permitted in Milwaukee; proposals must go through Board of Zoning Appeals and comply with lot-area and setback standards. Parking an RV or tiny-home trailer on-site for more than 14 days is prohibited.
Violations & Fines
Illegal tiny home occupancy is a $500 to $2,500 violation plus removal order. Continued violations may escalate to injunctive action.
Frequently Asked Questions
Can I live in a tiny house on wheels in my backyard?
Can I build a tiny ADU on my lot?
Sources & Official References
Other rules in Milwaukee
Compare Milwaukee to another location·View the Wisconsin accessory structures overview
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Tiny Homes in Nearby Cities
How other cities in Milwaukee County handle tiny homes.