Mills Square at 100 S Ellsworth Avenue and 101 S San Mateo Drive offers well-maintained, plug-and-play office space in Downtown San Mateo. A proud, reliable, responsive, national award-winning property management team has an incredible on-site office and staff who react promptly. Each building features abundant natural light, 24/7 security, and on-site parking reserved per floor. 100 S Ellsworth Avenue, or Mills Square Tower, has two full-floor plates on the fourth and ninth floors, each comprising approximately 8,371 square feet. These suites showcase open floor plans with creative tech improvements. Each meticulously designed turnkey office offers furnishings and garage parking, with 20 unassigned spots on the fourth floor and 23 on the ninth floor. 101 S San Mateo Drive presents 23,650 square feet of open-concept tech office across the fourth and fifth floors, each spanning 17,906 and 5,744 square feet, respectively. These suites feature new tenant improvements, a high-density floor plan, a large kitchen, 33 covered and secured parking spaces, and a trophy penthouse with an exclusive roof deck. 101 S San Mateo Drive has on-site amenities such as an all-hands conference area, amenity space with a luxurious lobby, and a recently renovated fitness center. Mills Square lies in the heart of Downtown San Mateo, three blocks from the city center and the stunning San Mateo Central Park. Public transportation to San Francisco and San Jose is accessible from the office, as the San Mateo Caltrain Station is three minutes away. Nearby dining, shopping, activities, salons, and service amenities surround the property for tenants to enjoy. Join the Mill Square family for a destination with move-in-ready office space in a central location with unmatched convenience and waterfront appeal.