Welcome to 3500 South Ave, a versatile 4BR, 3.25BA home in the Samish Neighborhood! This 2,111 SF home backs to greenbelt with close access to the Interurban Trail and trails to Lake Padden. Main residence on main and upper levels; primary bedroom with full bathroom on upper level along with two more bedrooms and a hall full bath; main level has kitchen, living room, dining area, utility room, and half bath; access to back deck. Secondary living area in the lower level includes a kitchen with stove and exhaust, a gas fireplace in the living area, and a bedroom with its own three quarter bathroom; separate entrance ideal for guests, multi-generational living, or potential rental use (buyer to verify). Large back deck overlooks forest and nature reserve to the south. Stairs off the back deck lead to the yard with room for gardening and terraced landscaping. Welcoming front porch. Two-car garage plus plenty of additional driveway and other off-street parking. Forced air heat and wired for A/C (A/C unit not included). Conveniently located near Fairhaven Plaza with café and dining options, fitness studio, and everyday amenities. Minutes to Fairhaven proper. Flexible layout, trail access, and ample parking make this a rare find in a sought-after location. Schedule a showing today!