There is no countywide STR registry in Washtenaw County. Ann Arbor regulates STRs under City Code Chapter 97 plus its Zoning and Housing Codes; operators register with the city and, separately, hosts must register with the county to collect its accommodation excise tax.
Registration happens at two levels. For land use, Ann Arbor requires operators to comply with Chapter 97 (Short-Term Rentals), Chapter 55 (Unified Development/Zoning Code) and Chapter 105 (Housing Code); commercial STRs must obtain a Certificate of Compliance. Separately, every accommodation provider in Washtenaw County must register with the county's designated Administrator to remit the 5% accommodation excise tax on stays under 30 days. Michigan defines a taxable STR guest as a natural person staying less than 30 consecutive days. Outside Ann Arbor, confirm registration rules with your township or city — most Washtenaw townships have adopted their own zoning under the MZEA.
Failure to register and remit the county accommodation tax exposes the operator to interest of up to 1% per month plus penalties, capped at 25% of the unpaid tax.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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