Prime Altadena - 1688 E. Mendocino sits in Altadena's historic Country Club Park neighborhood, a residential enclave developed in the 1910s around the Altadena Town & Country Club and Golf Course, just down the street. Neighboring homes on the block date from the 1920s through the early 1950s, many over 3,000 SF, which marks this as an established, generous-lot pocket rather than a tract. From the house, it's minutes to Eaton Canyon trailheads, Pasadena's Lake Avenue and Old Town corridors, and the 210. Proximity to Pasadena have always made this one of east Altadena's most desirable addresses. Walk in to a grand entrance, soaring ceilings and bright natural light. The floorplan is well thought out and totally usable. LED lighting and waterproof laminate throughout. The kitchen features quartz counters, solid wood cabinetry, fully electric stainless steel appliances, double oven, a spacious island with bar seating, and a wet bar with built-in beverage center. Fire proof siding James Hardie fiber cement siding is noncombustible and carries a top-tier Class A fire rating. Double reinforced foundation. Home was built ground up. A large walk-in pantry adds storage. Built-in surround sound carries through kitchen, family room and dining. The formal living room features an electric fireplace and custom built-ins with tankless water heating. This seller is offering a move-in ready new build and help with your payment with an 800 2 bed 2 bathroom ADU for multi-generational living. Minutes from the 210 Freeway and 15 to Old Town Pasadena. Safety was not an afterthought: fire sprinklers, fire-resistant siding, built-in alarm, camera pre-wiring. Fully electric with owned solar and battery storage, separate HVAC per level, dual-glazed thermal windows. Owned solar & batteries. Every bedroom is en-suite, pre-wired for television, with built-in closet shelving. Nobody waits, nobody shares. Baths feature scratch-resistant porcelain tile, bidet toilets, handheld fixtures and frameless glass. One upstairs bath includes a soaking tub. The primary suite offers a spa-inspired bath with freestanding soaking tub, rainfall shower with handheld, two vanities, two walk-in closets, one with a center island, and private balcony access. Then the part most listings cannot offer at any price. A detached garage with EV charging port adjoins an ADU with separate power metering and its own laundry hookups. Separate utilities, separate laundry, separate entrance.