Town Hall Address 302 Main Street Old Saybrook, CT 06475 United States- Middlesex County Website http://www.oldsaybrookct.org Town Clerk 860-395-3135 https://connecticut-townclerks-records.com/User/Login.aspx?ReturnURL=/index.aspx United States Tax Collector 860-395-3138 United States Assessor 860-395-3137 http://gis.vgsi.com/oldsaybrookct/ United States Building 860-395-3130 United States Zoning 860-395-3131 United States Water 800-286-5700 United States Probate Court Saybrook (PD-33) Tax Adjustment Uniform Fiscal Year- July, January Tax District Beach Tax Districts: Borough of Fenwick , Chalker Beach , Cornfield Point , Great Hammock , Indian Town , Knollwood Beach , Otter Cove , Saybrook Manor , Summer Wood - Telephone numbers through Town Clerk or website Indices General Index > real property > town taxes > beach district taxes Town Hall Hours Monday to Friday – 8:30 to 4:30 Water Source Well and septic, CT Water Company Sewer Source No Sewer County Middlesex