Rare opportunity in the heart of Westside Costa Mesa featuring two detached residences on one property and multiple options for an owner-user, investor, or future developer. The property includes a charming 2-bedroom, 1-bathroom front house along with a newly constructed, freestanding 3-bedroom, 3-bathroom ADU offering approximately 1,200 square feet of modern living space. The front residence offers flexibility for either continued rental use or future owner occupancy, while the rear ADU is currently occupied under a one-year lease. For buyers seeking additional income, the property provides the opportunity to benefit from two detached residences on one parcel, including a separate, recently constructed rear unit. The front home features a comfortable layout with two spacious bedrooms, one bathroom, an in-unit washer and dryer, and its own private outdoor space. The newly built rear ADU features an open floor plan with 10-foot ceilings, quartz countertops, stainless steel appliances, recessed LED lighting, three bedrooms, three bathrooms, an in-unit stackable washer and dryer, solar, a private yard, and no common walls. Located in highly desirable Westside Costa Mesa, the property is just minutes from the beach and offers easy access to bike trails, restaurants, shopping, cafes, Newport Beach, and everything the surrounding coastal area has to offer. For buyers interested in additional future upside, the property's R2-HD zoning provides meaningful redevelopment potential. Preliminary concepts indicate the potential to replace the existing front residence with up to three additional residential units while retaining the existing rear ADU, potentially creating a four-unit property. Whether you choose to occupy the front home in the future, hold both residences as an investment, or explore redevelopment opportunities, this property offers exceptional flexibility in one of Orange County's most sought-after coastal communities.