Welcome to 10122 Groveside Ave - a beautifully upgraded single-story home located north of Russell Street in one of Whittier's most desirable neighborhoods. Built in 1961 and thoughtfully improved throughout, this 4-bedroom, 3-bath home offers 2,107 square feet of living space on an expansive 8,403 sq ft flat lot. The layout is functional and open, featuring a spacious living room and a large kitchen/family dining area designed for everyday living and entertaining. The remodeled kitchen showcases white shaker cabinetry, clean finishes, and great flow into the main living spaces. A standout feature of the home is the seamless indoor/outdoor living, enhanced by new black-framed windows and a folding patio door that opens to a completely reimagined backyard, that offes privacy plus. The exterior has been fully upgraded for both style and function. The backyard was redesigned in 2021 with new landscaping, a stunning pool(has removable saftey fence)and spa, and beautiful hardscaping. Additional improvements include new backyard concrete (2025), vinyl gates (2025), and an Alumawood patio cover (2018), creating a private and usable outdoor space year-round. Major system upgrades provide peace of mind, including a newer roof (2016), HVAC system with updated ducting (2017), upgraded electrical panel (2017), and a copper water line from the meter to the home (2021). The front yard has also been refreshed with new landscaping and sprinkler system, along with a new garage door and striking mid-century modern front door. Recently completed exterior paint (2024) and updated front and rear doors (2025) add to the home's clean, modern curb appeal. Additional features include inside laundry with extra storage and a layout that offers flexibility for a variety of living needs. This is a rare opportunity to own a turn-key, extensively upgraded single-story home in a prime Whittier location.