401 Mendocino Avenue Newly Renovated Office Suites in the Heart of Downtown Santa Rosa! Welcome to the beautifully updated Upton Building, offering a rare opportunity to lease professional office suites in one of downtown Santa Rosa's most recognizable historic buildings. A variety of suite configurations are available, ranging from approximately 150 SF private offices to larger multi-office suites up to approximately 3, 000 SF, making this an ideal location for solo professionals, growing teams, and established businesses alike. The building has undergone extensive renovations featuring brand-new hardwood floors, fresh paint, updated common areas, and refined architectural details throughout, creating a bright and inspiring environment to work, collaborate, and meet with clients. Available spaces can accommodate a wide range of uses including attorneys, therapists, creative agencies, architects, financial planners, wellness professionals, and more. Select suites offer conference rooms, multiple private offices, kitchenettes, and street frontage. Flexible layouts and potential build-to-suit options are available depending on tenant needs. Tenants enjoy access to shared amenities including communal kitchens, restrooms, conference facilities, utilities, and janitorial services for added convenience and efficiency. Prominently situated on the corner of Mendocino Avenue and 5th Street, the Upton Building places you steps away from Santa Rosa's best restaurants, coffee shops, shopping, City Hall, and the energy of downtown. An exceptional opportunity to establish your business in a beautifully restored historic property with flexible leasing options and a vibrant downtown presence. Schedule a tour today!