Tiny home rules in Lake County, IN — 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.
Unincorporated Lake County has no separate 'tiny home' ordinance. A tiny house used as a second dwelling fits the UDO's backyard cottage category: a small detached accessory dwelling, special exception in A-1 and R districts, capped at 580 sq ft, one per lot, with owner occupancy.
The Lake County UDO does not define tiny homes, but section 154-9-030 defines a backyard cottage as 'a small accessory building occupied by a single, self-contained accessory dwelling unit' on the same lot as a detached house. That is the pathway for a permanently sited tiny house: approved as a special exception in A-1 and R districts, in the rear yard set back 10 ft from side/rear lines, no more than 24 ft tall, floor area capped at 49% of the home or 580 sq ft. Only one per lot, not on two-unit or multi-unit lots. It must meet building and fire codes; lots without central sewer need Health Department approval. Tiny homes on wheels (RVs) are not permitted dwellings.
Placing a tiny-home dwelling without the special exception is a zoning violation: 15-day cure notice, then citations up to $2,500 (first) and $7,500 (subsequent) under IC 36-1-3-8, each day separate.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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