Town Hall Address 1 Town Hall Plaza Valhalla, NY 10595 United States- Westchester County Website https://www.mtpleasantny.com/ County Clerk Timothy C. Idoni 914-995-3081 Mon - Fri, 8am - 5pm 110 Dr. Martin Luther King Jr. Blvd White Plains, NY 10601 United States Town Clerk 914-742-2312 Monday - Friday 8:30am to 4:30pm 1 Town Hall Plaza Valhalla, NY 10595 United States Tax Collector 914-742-2348 Monday - Friday 8:30am to 4:30pm 1 Town Hall Plaza Valhalla, NY 10595 United States Assessor 914-742-2345 Monday - Friday 8:30am to 4:30pm 1 Town Hall Plaza Valhalla, NY 10595 United States Code Enforcement 914-742-2305 1 Town Hall Plaza Valhalla, NY 10595 United States Zoning 914-742-2327 NY United States Water 914-831-1062 119 Lozza Drive Valhalla, NY 10595 United States Sewer 914-831-1062 119 Lozza Drive Valhalla, NY 10595 United States Town Hall Hours Mon - Fri: 8:30am - 4:30pm County Westchester