Introducing 4221 E Massachusetts St, a spectacular Spanish Hacienda located on an oversized lot in the heart of Belmont Heights. This expansive estate has an exceptional layout, exquisite upgrades and amenities that deliver a modern lifestyle. Double door entry welcomes you to the gorgeous foyer with towering ceilings, a wrap around staircase and beautiful natural light shining through from above. The main level showcases an impressive Great Room designed for entertaining, seamlessly connecting the kitchen, dining and spacious family room. A well appointed chef's kitchen features a luxurious center island, dual sinks, breakfast bar, walk-in pantry and stainless steel appliances. On the north end of the first floor, a large bedroom with ensuite bathroom and sitting area creates an ideal in-law suite, guestroom or easy ADU conversion for an independent living space. Elevate to the second level and find a pair of south facing primary bedrooms, each with ensuite bathrooms, walk in closets and private verandas. Two additional bedrooms are generous in size, laundry and a full hallway bathroom complete the upstairs floorplan. French doors lead to a private backyard oasis with mature landscaping, creating indoor/outdoor living and perfect for hosting friends and family. Enjoy the multiple seating areas, an outdoor kitchenette and above it all, panoramic views from the rooftop deck. Additional highlights include elegant archways, a wine cellar, copper plumbing, upgraded electrical, recessed lighting, ample storage and so much more. A premier location on a quiet street just moments from top rated schools, local restaurants and coffee shops with an ocean breeze from the beach!