Welcome to 1851 Washington Avenue—an extraordinary custom-built 1950s brick Colonial in Portland's sought-after North Deering neighborhood. Designed with both comfort and flexibility in mind, this expansive home offers over 5,900 sqft of living space, plus an office/recreation space of 1300 sqft on nearly an acre—perfect for a family looking to thrive, grow, and make lasting memories. Inside, you'll find six generously sized bedrooms—each with its own en-suite bath, offering privacy and convenience for every family member. Whether you have teens, young kids, or extended family living with you, this layout is ideal for multi-generational living or simply giving everyone their own space. The main level features a great room or office with a full bath—ideal for family gatherings, celebrations, or work. The chef's kitchen is the heart of the home, with cherry cabinetry, brand-new quartz countertops, new appliances and ample space for family meals. Adjacent to the kitchen are a formal dining room, cozy library, and a large living room—all featuring hardwood floors and charming wood or propane fireplaces for that warm New England feel. Upstairs, three of the six bedrooms open to an enclosed sun porch with peaceful views of the 24-acre green space next door—perfect for morning coffee, quiet reading, or watching the kids play. The finished basement offers even more family-friendly space, including a potential media room, workshop, generous storage, and even a fun, vintage 1950s-style dance floor with a half bath. Four heat pumps ensure year-round comfort, and the fenced backyard offers a safe spot for kids and pets to play. The rare 4-car drive-through garage and a driveway that can fit up to 20 vehicles make hosting family and friends easy. Whether you dream of a large family home, an in-home daycare, or simply having room to spread out, this property offers the flexibility to match your vision. Located just minutes from I-95, the Falmouth Spur, parks, and golf courses.