This desirable Hayward Park property presents a fabulous opportunity to own your primary residence with a second income-producing unit attached upstairs. The ground floor of this smartly designed duplex features the main home with its three bedrooms, two full bathrooms, spacious living room, and separate entrance in the back. The private backyard, landscaped with lush foliage, has ample space for relaxation and entertaining. The primary bedroom boasts sliding glass doors opening onto the green backyard. The attached unit upstairs, with an independent entrance in front, contains two bedrooms, two full bathrooms, and a sizable balcony. With natural light, neutral colors, and elegant features throughout, the upstairs unit is in pristine condition. 1723-1725 Gum Street stands out with its modern design, clean lines, and three-car garage. The property offers convenient access to downtown San Mateo and transportation routes.