Town Hall Address 18027 Old US-12 Chelsea, MI 48118 United States- Washtenaw County Website https://sylvantownshipmi.gov/ Zoning 734-475-8890 18027 Old US-12 Chelsea, MI 48118 United States Town Clerk 734-475-8890 18027 Old US-12 Chelsea, MI 48118 United States Water 734-475-8890 18027 Old US-12 Chelsea, MI 48118 United States Sewer 734-475-8890 18027 Old US-12 Chelsea, MI 48118 United States Tax Collector 734-475-8890 18027 Old US-12 Chelsea, MI 48118 United States Code Enforcement 734-475-8890 18027 Old US-12 Chelsea, MI 48118 United States Town Hall Hours M-Thurs, 9-12 County Washtenaw