427 21st Sophisticated coastal living meets timeless architectural character in this thoughtfully maintained Huntington Beach single-family residence, offering three bedrooms, a spacious loft, and two-and-a-half baths, ideally located just minutes from the beach, the pier, Huntington Dog Beach, and Main Street. Set on a corner lot, the home enjoys enhanced privacy and abundant natural light, framed by low perimeter walls that create a serene, semi-private courtyard ideal for outdoor living. The exterior reflects a Spanish-inspired Mediterranean aesthetic with stucco finishes, wrought iron detailing, and a fire-resistant tile roof replaced in 2012–2013, along with significant structural improvements completed at that time. Additional upgrades include a landscape redesign (2017–2018), Ledgestone cultured stone pillars (2023), and recent exterior painting (2022 and 2024), reinforcing curb appeal and durability. The 2, 328-square-foot interior blends classic materials with functional spaces, featuring Spanish terracotta tile and hardwood floors (installed in 2009 with new subflooring), custom sliding closet doors, shutters, and a wrought iron staircase. Dual-pane windows with UV-protective film enhance comfort and energy efficiency. The kitchen features pine cabinetry and tile surfaces, opening to outdoor entertaining areas. The main living space includes a gas fireplace, surround sound wiring and a modern ADT security system (2023). Upstairs, the primary suite opens to a private balcony overlooking the courtyard, complemented by a versatile loft. Laundry is conveniently located upstairs. Outdoor living includes a covered patio, built-in masonry BBQ island, multiple seating areas, decorative patio lighting (2025), and mature fruit trees. Energy-efficient upgrades include low-flow toilets (2025) and reverse osmosis filtration (2024). Additional highlights include a two-car garage, 2019 water heater, newer screens, and a low-maintenance 2, 938-square-foot lot. Major systems have been proactively addressed, reflecting consistent ownership. A rare opportunity to own a detached coastal home combining architectural depth, documented improvements, indoor-outdoor living, and a highly walkable Huntington Beach lifestyle.