1374 Deeplawn Drive Tucked at the end of a quiet cul-de-sac, this exceptional Diamond Bar home offers a rare combination of privacy, space, and future potential. Set on an expansive 16, 742 sqft lot (over 1/3 of an acre) with a long private driveway, grand approach, and ample parking, the property delivers a sense of seclusion and presence that is increasingly hard to find. The standout feature is the large, mostly usable lot, offering outstanding potential for an ADU, pool, outdoor living, or future expansion. With the right vision, it also presents a unique opportunity to create a gated, estate-style residence tailored to your lifestyle. Located within the distinguished Walnut Valley Unified School District, the home is within walking distance to Maple Hill Elementary and Chaparral Middle School, and just minutes from Diamond Bar High School. Lovingly maintained by the same owner for over 40 years, the home reflects true pride of ownership. The bright and spacious interior features high ceilings in the living room and primary bedroom, a wide staircase, fresh interior paint, and a blend of hardwood and tile flooring, complemented by recessed lighting, wood shutters, and dual-pane windows throughout. A separate laundry room adds everyday convenience, along with an attached garage with direct access to the kitchen for easy grocery unloading. The living room opens to a side patio through French doors, while a sliding door from the kitchen leads directly to the backyard, creating a natural indoor-outdoor flow. The kitchen features granite countertops, and a recently remodeled downstairs bathroom adds modern comfort. Additional highlights include a tile roof, central ADT alarm system with 13 sensors, and metal security screens by CrimeSafe on select doors and windows. The backyard features a wide covered patio, numerous mature fruit trees that produce abundant harvests each year, and generous space for entertaining or relaxing. A rare opportunity to own a private, versatile property in one of Diamond Bar’s most desirable neighborhoods.