In Lafayette, a distinguished East Bay enclave celebrated for its high quality of life, oak-studded hills, mild climate, and strong sense of community, 3621 Chestnut Street emerges as an uncommon multifamily offering. Multi-family properties in this area trade infrequently, given the dominance of single-family residences in the local market, making this three-unit setup a distinctive prospect for those pursuing reliable income streams or owner-occupancy in a setting of enduring appeal. Encompassing 1,426 square feet on a 4,550-square-foot lot across two stories, this duplex with a newly constructed detached ADU emphasizes privacy and functionality. The main duplex includes Unit A (2 bedrooms, 2.5 bathrooms) and Unit B (1 bedroom, 1 bathroom), each with separate entrances, in-unit laundry, upgraded bathrooms, and kitchens equipped with granite slab counters and gas cooktops. Modern conveniences such as central heating and air conditioning, a tankless water heater, and separate utility meters facilitate efficient tenant management. The detached ADU provides an additional 1-bedroom, 1-bathroom space, complemented by a large fenced yard featuring a patio and garden area for outdoor enjoyment. Ideally positioned with a Walk Score of 92/100, the property offers walkable access to downtown Lafayette's boutiques and eateries, the BART station for efficient regional travel, multiple shopping centers within 0.4 miles, top schools, freeways, and nearby recreational opportunities in Mount Diablo State Park. The Lafayette Elementary School District and Acalanes Union High School Distric