Rare opportunity to own a beautifully maintained 4-bedroom, 2-bath home set on an expansive 1/3-acre lot in the highly desirable Upper Castro Valley neighborhood. Tucked on a quiet street, this move-in ready home shines with fresh paint, gleaming hardwood floors, new carpet, and updated light fixtures — polished and inviting from the moment you arrive. The living room centers around a cozy gas fireplace, while the dining area features thoughtful built-in storage and display. The updated kitchen impresses with classic white cabinetry, stone countertops, and stainless appliances including a gas range — flowing seamlessly out to an expansive deck perfect for indoor-outdoor living and entertaining. The spacious primary bedroom offers room for a dedicated sitting area, creating a true retreat. Step outside and discover a nearly one-third-acre lot framed by mature landscaping — complete with a large deck, lush lawn, and a paver patio with pergola ideal for gatherings of any size. A detached workshop with a half bath presents exciting potential as an in-law suite, home office, or future ADU. Long driveway, side yard access, covered RV and vehicle storage, plus a backyard storage shed round out the impressive utility of this property. With this expansive lot, potential future development opportunities abound! Walk to acclaimed Castro Valley schools, stroll to shops and restaurants, or hop on BART for a stress-free commute — this is California living at its finest.