Nevada County adopts 'tiny homes on wheels' ordinance after lengthy public debate

Nevada County supervisors voted to adopt a new ordinance that allows a defined class of “tiny homes on wheels” to be used as permanent dwelling units where the underlying zoning density permits.

The measure, drafted by county planning staff and recommended by the Planning Commission, passed 4-1 on a roll call vote after more than two hours of public comment and a long presentation from county planners. The ordinance treats tiny homes on wheels as dwelling units when they meet technical, safety and utility standards and when they remain consistent with the parcel’s allowed density.

Staff said the ordinance targets a particular type of structure—a wheeled unit no larger than 400 gross square feet, registered with DMV and built to specified insulation, anchoring and construction standards—rather than every RV or trailer. “A tiny home on wheels is . . . no larger than 400 gross square feet,” Principal Planner Tyler Barrington read during his presentation, quoting the draft code language.

The board also required additional follow-up: staff was directed to study broader “all homes on wheels” options (including RVs, trailers and similar vehicles) and return with proposals and a one‑year progress report to allow the board to review outcomes and unintended consequences.

Why it matters: The ordinance is intended to expand the county’s legal housing stock with a lower‑cost, smaller-footprint housing type while retaining site standards, public‑health checks and design requirements. Supporters said it provides an affordable ownership and rental pathway for workforce households; opponents warned of wildfire, evacuation and infrastructure risks if mobile or motorized dwellings are later allowed without stricter siting controls.

What the ordinance does: The new code section (drafted as an amendment to zoning regulations) requires tiny homes on wheels to meet: - a DMV title/registration and ANSI/NFPA/other third‑party certification; - building‑type construction (minimum 2x4 framing at 16 inches on center), insulation and engineered wind/snow loads for the locality; - permanent utility connections inspected by the County Building and Environmental Health departments (water, septic or equivalent systems, electrical); and - site development standards that match setbacks, parking and impervious‑surface limits for the underlying zoning.

The draft also prohibits short‑term rental of the units (the board directed staff to study the short‑term rental restriction further), requires a fire protection plan for units in high/very‑high fire zones or on long dead‑end roads, and allows accessory structures (decks, engineered ramadas for snow loading, screening). The Planning Commission supported the draft but asked staff to remove a few parts that would have required special screening for ground‑mounted equipment and to align compacted base specifications with building standards.

Public comment and concerns: Dozens of residents, housing advocates and service providers spoke during the hearing. Supporters included small local builders and nonprofit housing groups who said tiny homes would create additional affordable units quickly and that many people already live in wheeled units and need a legal pathway. Opponents raised public‑safety and infrastructure concerns: narrow, forested evacuation corridors (Banner Mountain, Cascade Shores), inadequate water or septic capacity on small parcels, the potential for increased neighborhood impacts, and wildfire risk. Several speakers urged the board to expand the ordinance to include existing motorized RVs and travel trailers; county staff said that further study of “all homes on wheels” is already in the board work plan for 2025.

Quotable from the meeting: “If local ordinance allows for these types of units, then that was up to that jurisdiction,” Principal Planner Tyler Barrington said while explaining the county’s proposed definition and review process. A resident who described living in a 44‑foot trailer after an unexpected bereavement told the board she was forced to sell the trailer because county rules did not allow her to remain in it on a family parcel.

Next steps and directions to staff: The board adopted the ordinance as presented, with two explicit follow‑up directions: (1) county staff should continue the directed study of broader “all homes on wheels” policy (RVs, park trailers, travel trailers) and return to the board with options and implementation steps, and (2) staff will produce a one‑year progress report to the board describing applications, placements, compliance issues and any public‑safety incidents tied to units placed under the new code. The board also asked staff to examine the short‑term rental restriction and report back through the housing ad hoc or in the one‑year assessment.

Ending: Advocates framed the ordinance as an incremental but pragmatic tool to add housing choices in a county where traditional homebuilding is expensive and slow. Opponents urged careful monitoring and stronger wildfire and evacuation safeguards if the county later considers allowing motorized RVs or travel trailers under similar rules.