Welcome to 33 Prince Royal Passage - a rare 4BD, turnkey home in sought-after Mariner Cove. Extensively upgraded with new plumbing, electrical panel, sewer lateral, French drains, EV charger, tankless water heater, full property fencing, and A/C for modern comfort and peace of mind. The 1,635 sq ft interior features a designer kitchen that seamlessly flows to the dining area and backyard, as well as refinished hardwood floors and a gas fireplace. A recently renovated detached office offers the ideal WFH setup. Set on an expansive 6,500 sq ft lot, the show-stopping Yardzen-designed backyard (photographed by Sunset Magazine) includes sleek hardscaping, pergola, lush landscaping, fruit trees, garden beds, and a magazine-worthy playhouse. Every detail has been curated for upscale living and effortless entertaining. This is a home where luxury meets longevity -- perfectly positioned within blocks of award-winning schools, waterfront paths, and the best of Marin living.