Charming Cape with Endless Potential in Mastic Beach! Welcome to 63 Washington Avenue, a spacious 4-bedroom, 4-bathroom single-family home nestled on a generous 0.38-acre lot in the heart of Mastic Beach. Key features are a Den/family room and formal living areas, Full basement for storage or future finishing, attached 1-car garage with private driveway, Eat-in kitchen and a Master suite on the main level. Built in 1970, this residence offers nearly 3,000 square feet of living space and a layout perfect for multi-generational living or entertaining. © 2025 OneKey™ MLS, LLC