Exceptional opportunity to own a true duplex in Beaverton featuring two fully independent living spaces with separate addresses and utility meters, offering outstanding flexibility for multi-generational living, owner-occupancy with rental income, or a pure investment opportunity. Custom built in 1984 and meticulously maintained by the original owner, this Washington County property offers approximately 2,990 square feet with 4 bedrooms and 3 bathrooms across a highly functional layout. The primary residence features 2 bedrooms and 2 full bathrooms, highlighted by an expansive family room ideal for entertaining, recreation, or future customization. A 2-car attached garage, spacious patio, low-maintenance yard, and storage shed provide everyday comfort and convenience, while an energy-efficient forced-air heat pump ensures year-round comfort. The second unit, addressed as 10290 SW Crystal St, offers its own private entrance, 2 bedrooms, 1 bathroom, and an oversized 1-car garage—creating a fully independent living space ideal for tenants, extended family, or supplemental income. This unit is currently rented for $1,600 per month, reflecting a long-term tenant relationship, with potential for increased rental income. The unit also features its own gas furnace for separate heating. Positioned on a quiet corner lot with access from two sides, the property provides excellent separation and privacy between units. Ideally located near shopping, parks, dining, and major commuter routes, this rare Beaverton duplex delivers strong income potential, versatility, and long-term investment value in the heart of the Portland metro area.