Beautifully maintained and thoughtfully upgraded, 435 B St is a spacious 4 bedroom 4 bath home built in 2005, offering 2,385 sq ft of well designed living space. Featuring an open floor plan, soaring ceilings, and abundant natural light, this exceptional residence is ideal for large or multigenerational families seeking comfort, flexibility, and modern style. The home features two luxurious primary suites, one with a jetted soaking tub, separate shower, and walk-in closet, and the other with tall windows and a tub/shower combination. The bright, open kitchen showcases granite countertops, freshly painted cabinetry, a brand new stainless steel Empava gas cooktop, new range hood, and newer stainless steel IKEA dishwasher. Recent upgrades include fresh interior paint, modern designer light fixtures, energy efficient LED lighting, over 95 decorator style rocker switches and outlets, and Smart Kasa Wi-Fi light switches controlling interior and exterior lighting. Upstairs features brand new premium carpeting with upgraded padding, while plantation shutters, premium cellular shades, and custom draperies add elegance throughout. All four bathrooms have been updated with new toilets, supply lines, and shutoff valves, and every interior door features matching aged bronze hardware. The flexible floor plan includes two ground floor rooms, one enclosed with custom double doors and located beside a full bath, making it ideal as a guest suite, home office, gym, playroom, or media room. A custom projector shelf upstairs adds even more entertainment possibilities. The oversized 2 car garage includes bright LED shop lighting and custom overhead storage racks. Outside, enjoy a custom-built 17' x 7' storage shed, new front privacy fence, and professionally landscaped low maintenance yard with black lava rock, commercial grade weed barrier, and stainless steel anti gopher mesh. Conveniently located near El Camino Real, Colma BART, Highways 101 & 280, Serramonte Center, Westlake Shopping Center, restaurants, schools, churches, and SFO International Airport, this move in ready home combines quality craftsmanship, extensive upgrades, flexible living space, and exceptional convenience. A rare turnkey opportunity meticulously improved inside and out.