Prime investment opportunity in San Francisco's highly desirable Outer Richmond / Sutro Heights neighborhood. This fully tenant-occupied, low-maintenance 1948 duplex features two well-proportioned, light-filled units totaling approximately 2,600 sq. ft. of living space. Positioned just blocks from Ocean Beach, Lands End, and Golden Gate Park, this property offers immediate, steady cash flow in a supply-constrained coastal submarket. With strong rental demand, identical classic layouts, and solid structural fundamentals, 509-511 44th Avenue represents an exceptional addition to any buy-and-hold portfolio or 1031 exchange. The building comprises two identical two-bedroom, one-bathroom flats (approx. 1,145 sq. ft. per unit), each designed with functional layouts that consistently attract long-term tenants. A classic tunnel entrance provides private access to each flat. Both residences feature expansive living rooms, formal dining rooms for flexible living configurations, and full bathrooms equipped with separate soaking tubs and shower stalls. The kitchens offer abundant counter space and cabinetry, accommodating efficient daily operations. The ground level includes a spacious two-car side by side garage providing ample room for tenant parking, and laundry infrastructure. To the rear, a low-maintenance paved backyard offers utility and outdoor space for occupants. Situated on a quiet residential street, the location provides proximity to MUNI transit along Geary Boulevard and Balboa Street, commercial corridors, highly rated local dining, and major natural attractions including Sutro Heights and the Lands End Trail. Both units are being sold tenant-occupied; drive-by viewing only. Do not disturb occupants. Showing schedules, rent roll, and disclosure packages are available upon request. (Photos are from previous listing when unit is vacant)