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!