Tiny home rules in Hamilton County, TN — 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.
Chattanooga has no separate tiny-home ordinance; a backyard tiny house is regulated as an accessory dwelling unit. It must sit on a permanent foundation, stay under 800 square feet, and cannot be a shipping container or recreational vehicle.
Neither Tennessee nor Chattanooga provides a standalone tiny-home category, so a permanent backyard tiny house is treated as an ADU under Sec. 38-43(b). That means it must have "a permanent foundation either through digging and pouring a footer or being attached to an existing permanent structure," cannot exceed 800 gross square feet, and must follow all design standards for single-unit detached houses. Shipping containers and recreational vehicles are expressly prohibited as ADUs, so a tiny home on wheels does not qualify. Movable RV-style units instead fall under the code's Recreational Vehicle and campground definitions and cannot be used as permanent dwellings on a residential lot. Unincorporated Hamilton County follows the RPA county zoning resolution, which may differ.
Placing a tiny home on wheels or a shipping container as a dwelling violates the zoning code; enforcement can require removal and city court penalties.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Chattanooga encourages backyard composting and offers free mulch and compost to city residents. No ordinance bans a tidy home compost pile. The city collects...
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No Hamilton County or Chattanooga ordinance specifically bans or requires a permit for residential artificial turf. In required landscape areas of developmen...
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Neither Hamilton County nor Chattanooga requires homeowners to plant native species, and there is no ban on turf lawns. Native and pollinator plantings are e...
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Rainwater harvesting is legal in Tennessee with no state permit or volume limit for non-potable uses like irrigation. Chattanooga actively encourages it, eve...
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Tennessee has no statewide homeowner lawn-watering ban, and neither Hamilton County nor Chattanooga imposes fixed watering days. During drought, Tennessee Am...
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Chattanooga treats weeds like tall grass: grass, underbrush, or weeds must be kept under 10 inches. Overgrown lots are tagged as public nuisances by Code Enf...
See how Hamilton County's tiny homes rules stack up against other locations.
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