Roseville, CA Accessory Structures: Tiny Homes (2026)
Tiny home rules in Roseville, CA, 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
- Tiny houses
- Included in ADU definition, no separate rules
- Foundation required
- Permanent foundation or permanent chassis
- Hookups required
- Full plumbed kitchen and bathroom
- Size cap
- Same 850/1,000 sq ft ADU limits apply
- Permit needed
- Standard ADU building permit
Summary
Roseville has no separate tiny-house ordinance. Municipal Code § 19.60.030 folds tiny houses into the accessory dwelling unit definition, so a tiny house must sit on a permanent foundation or chassis and meet every ADU development standard in Chapter 19.60, including the 850 or 1,000 square-foot size caps.
"Accessory dwelling unit" shall be as defined by Government Code Section 66313, as it now exists or may hereafter be amended, and means an attached or a detached residential dwelling unit that provides complete independent living facilities for one or more persons. The unit shall be located on a permanent foundation or a permanent chassis if a manufactured home, have an independent exterior access (if located within a single-family dwelling unit), and shall include permanent provisions or infrastructure to support living, sleeping, eating, cooking, and sanitation on the same parcel as where a single-family, two-family or multi-family dwelling (including detached garages) is situated or proposed to be situated. Accessory dwelling units can also include efficiency units, as defined in Section 17958.1 of the Health and Safety Code, manufactured homes, as defined in Section 18007 of the Health and Safety Code, second dwelling units, granny flats, in-law quarters, casitas, carriage units, and tiny houses as long as such units otherwise meet this definition.
Full Breakdown
" That underlying definition requires the unit to sit "on a permanent foundation or a permanent chassis if a manufactured home," have independent exterior access if inside a single-family dwelling, and include permanent kitchen, toilet, sink, and bathing facilities connected to plumbing and, for the kitchen, either a 220V receptacle or a dedicated gas line. A tiny house on a simple towable trailer without those permanent hookups does not meet the definition and cannot rely on the ADU pathway. 040. 080, including the bar on selling it apart from the primary dwelling and the 30-day minimum rental term.
Violations & Fines
A tiny house placed without a permanent foundation or the required kitchen and bathroom hookups does not qualify as an ADU and can be treated as an unpermitted structure or illegal dwelling under Title 19 and the building code. Chapter 1.20's general penalty makes a Municipal Code violation a misdemeanor punishable by up to a $1,000 fine, up to six months in jail, or both, unless charged as an infraction with escalating $100, $200, and $500 fines for repeated violations of the same provision within 12 months.
Frequently Asked Questions
Does Roseville have a specific tiny house ordinance?
Can I put a tiny house on wheels in my Roseville backyard?
What size limits apply to a tiny house ADU in Roseville?
Sources & Official References
Other rules in Roseville
California rules heatmap·Compare Roseville to another location·View the California accessory structures overview
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