Welcome to 580 and 580A 3rd Ave, two homes in one lot. Main house features 3bed/2bath that includes a new 371sf primary suite addition with a modern bath and walk-in closet. Second unit is a detached new ADU, with 747sf living space, 2bed/2bath, solar panels, high ceiling, and convenient skylights. Total living area for main house and ADU is 1,988 sqft. Both units feature new stainless steel appliances, and also have A/C system. Exceptional opportunity for homeowners who want to accommodate a growing family, or for investors. It's a perfect blend of modern comfort and lucrative income potential: live in one unit and rent the other or Airbnb one or both units. Primary suite addition and ADU completed on 2024. Prime location, 5 minutes to SFO international airport, 20 minutes away from City of San Francisco, walking distance from Cal-train, few blocks away from restaurants, banks, San Mateo Ave, and El Camino Real. Super easy freeway access 101, 380, and 280.