First time on the market since 1963! Welcome to 1288 Londonderry, located in the highly sought-after Halecrest/Hall of Fame community, one of Costa Mesa's most desirable neighborhoods. Lovingly cared for by the original owner for more than six decades, pride of ownership is evident throughout, with extensive maintenance records and documentation reflecting a lifetime of care. This home offers 4 generously sized bedrooms, 2 full bathrooms and a flexible floor plan. The original design incorporates removable/non-load-bearing interior wall configurations in many areas, offering possibilities to reimagine the layout for your needs and lifestyle. Major improvements include a new main sewer line liner to the city connection and cleanout in 2026; roof and skylights in 2021; high-efficiency Goodman HVAC with all-new ductwork and Air Scrubber in 2023; Bradford White water heater in 2024; upgraded 200-amp electrical panel; and fully paid solar installed in 2022. The home features composite, dual-pane laminated Low-E windows designed for energy efficiency and a quieter interior, along with beautiful bay and garden windows that add character and natural light. The interior was refreshed in 2026 with new paint throughout, beautifully sanded and refinished hardwood floors, and new electrical receptacles, switches and covers. The living room features hardwood floors, a gas fireplace and large dual-pane windows. The kitchen offers solid oak cabinetry with abundant storage, Jenn-Air gas cooktop/grill with downdraft, KitchenAid appliances and an opening skylight. Exterior improvements include Tex-Cote COOLWALL coating 2021, stamped and stained concrete driveway, LeafFilter rain gutters 2025, updated insulated garage door with ultra-quiet opener 2023/25 and security cameras. Gardening was a passion of the owner, and it shows throughout the beautiful grounds. The backyard features mature apple and lemon trees, staghorn ferns, jasmine, established gardens and multiple sitting areas. An 8' x 14' Endless Pools swim system with TREX decking offers a unique space for exercise and relaxation. A rear gate provides access to the adjoining park area, with potential access for an RV or other vehicles. Located near Killybrooke Elementary, Halecrest Park, Halecrest Swim & Tennis Club, shopping, dining and freeways. After more than six decades with one owner, 1288 Londonderry is ready for its next chapter and the next generation to call it home.