Surrounded by a fantastic award-winning garden in the tranquil hills of Montclair, 5961 Thornhill/5944 Marden is the best of both worlds - a private sanctuary, yet moments from Montclair amenities, shops, cafes, parks, and weekly farmer's market. This 3BD/2BA 1875 sq ft property was designed with enormous flexibility for use as a family compound with a 2BD/1BA single-family home and separate 1BD/1BA unit, or as a duplex* for potential residential income.Each unit boasts an open floor plan, updated kitchen and baths, hardwood floors, and windows on every side overlooking the lush gardens. Large patio and deck areas on multiple levels create a welcoming for entertaining extended family and friends, or even the entire neighborhood. With its huge lot and detached two-level garage (potential ADU?), the property may offer development possibilities for a multi-generational family compound (Buyers to investigate and verify to their satisfaction).