Investors and owner/operators-look no further. This exceptional mixed-use asset in Fountain Valley presents a rare opportunity to acquire both a high-performing self-storage facility and a versatile professional office component in one prime location. Combining stable in-place income with operational flexibility, this property is ideally suited for investors seeking dependable cash flow and long-term upside. The self-storage portion features 33 premium units that outperform traditional storage facilities. Tenants enjoy 24-hour access with direct drive-up convenience, oversized 8-foot roll-up doors, and generous 10- to 12-foot clear ceiling heights. The property is well established with seasoned tenants, many of whom have occupied their units for more than a decade, creating reliable and consistent revenue. With very low maintenance requirements and minimal turnover costs, this component operates as a true cash-flow generator. Recent upgrades include enhanced security camera systems, newer flat roofs, reinforced concrete floors that eliminate creaking and vibration, and energy-efficient LED lighting throughout. Complementing the storage income are 19 professional office spaces, consisting of 18 private offices and a central conference room. The offices are thoughtfully designed with separate HVAC systems, allowing tenants to control their individual climate without the expense of cooling the entire building. The property is over-wired for maximum connectivity and fully equipped for high-speed internet, LAN, and phone systems, making it ideal for modern business operations. Each office features functional windows with awnings that provide enough natural light and fresh air at the tenant's discretion. Opportunities that combine a strong self-storage cash flow with flexible, configurable office space in such a desirable Orange County location are exceptionally rare. This property delivers durability, efficiency, and long-term investment potential all in one strategic asset.