55+ in Plymouth Estates, Mount Sinai, on Long Island’s North Shore. This townhouse-style Cambridge model keeps everything on one level: 2 bedrooms, 2 full baths, 1,396 sq ft, with a full basement for storage and an attached 1-car garage. The open living and dining area centers on a gas fireplace, with sliders to a covered patio that backs up to evergreens, a quiet spot for morning coffee. The eat-in kitchen has hardwood floors, oak cabinets, a gas range, and a breakfast bar. The primary bedroom has a bay window and its own bath with a tub and a separate stall shower. The second bedroom works for guests or a home office, with a second full bath close by. In-unit laundry. Taxes are under $7,000. The $710 monthly HOA includes cable TV, water, grounds care, snow removal, and trash, and the association maintains the roof and exterior. Clubhouse, pool, and tennis courts. Up to two pets allowed per community rules. Minutes to Mount Sinai Harbor, Cedar Beach, and Port Jefferson Village. At least one resident must be 55 or older.