Price Improvement! Brand New 2025 Rebuild in Castro Valley. Welcome to 4314 Shamrock Way – a beautifully reimagined single-story 4-bedroom, 2.5-bath home offering 1,710 sq. ft. of modern luxury and comfort. Thoughtfully redesigned and expanded, this residence combines elegance with everyday functionality. Constructed under permits, this is an all-new rebuild above the existing foundation and subfloor, featuring new framing, electrical, plumbing, HVAC, roof, insulation, drywall, windows, and finishes—all completed to current building standards. Step inside to an open floor plan featuring wide-plank hardwood floors and a chef-inspired kitchen with an oversized island, sleek white countertops, rich gray cabinetry, full-height slab backsplash, and a generous farmhouse sink. Stainless steel appliances and designer finishes create a refined, timeless atmosphere. The Primary Suite offers a serene retreat with a spacious walk-in closet and gorgeous ensuite bath. Additional highlights include a Montigo fireplace with natural quartzite stone, copper plumbing, tankless water heater, 200-amp main panel, and dual indoor/outdoor laundry areas. The finished garage comes equipped with two 240V EV-ready outlets. Beautifully landscaped with excellent K–12 schools and next to everyday amenities!