Centrally located in the heart of San Diego County with convenient access to I-805 and other major freeways, this unique Serra Mesa property was utilized by the current owner as a primary, private residence while also producing income as it has four separate living quarters with private entrances! The four living areas include the following: 1) a 3 bedroom, 2 bathroom main home complete with a fireplace, a bright, open kitchen, and an attached two-car garage, 2) a large bedroom with no shared walls, a bathroom, a large walk-in closet, balcony, and a private entrance, 3) a permitted studio Companion Unit (ADU) with a private bathroom, full kitchen and a private entrance, and 4) an additional bright, private living area with a private entrance! Property features include a newer roof (2017), new water heater, owned solar (19 panels), 5 skylights (2 that are remote-controlled and solar-powered), and a bright sunroom with a steam sauna that conveys with the sale. Additional features include fresh paint and new LVP flooring and baseboards in the main living area, central AC in the main living area, a mini split in the upstairs bedroom, and ample storage. The backyard is turfed and fenced, has an aesthetically pleasing stone patio, a propane-fueled fire pit and array of flowers and fruit trees.