Tiny home dream for me died once I found out I couldn't park it as primary residence on residential zoned land in my city. Any big cities where you can do this and own the property? Paying rent for a house you own in the clear is a non-starter.
All zoning is local. You’ll have to research prospective locales to understand the nuance. Tiny homes kept on trailers are done for a reason; to be regulated as RVs instead of a fixed structured, avoiding typical ADU or structure to lot size ratio issues.
"In the last few years, some US cities made a surprising break with the mobile-exclusionary tradition by legalizing residence in RVs or tiny houses on wheels on residential lots. First Fresno, then Los Angeles and San Jose, and various cities & states now allow mobile Accessory Dwelling Units. Portland allowed one movable home per residential lot in the 2021 Shelter to Housing Continuum zoning reforms, and Oakland created a new residential type, “Vehicular Residential Facilities,” which allows multiple vehicle dwellings on sites with sufficient area."
You can build a permanent structure that's the bare minimum really cheaply and then just park the tiny home there, and that really only matters if you want to get grid utilities.