Welcome to 1527 Sullivan Avenue, a beautifully upgraded three-story townhome in the highly desirable Level One community of Costa Mesa. Offering approximately 1,961 square feet of thoughtfully designed living space, this home combines stylish upgrades with a functional floor plan in one of the area's most sought-after neighborhoods. The spacious, open-concept main living area is filled with natural light and is perfect for both everyday living and entertaining. The upgraded kitchen features elegant Carrara marble countertops, stainless steel appliances, abundant cabinetry, and a large center island overlooking the dining and living areas. The home offers ceramic tile flooring on the first level, rich wood flooring throughout the stairs and upper levels, and carpet in both bedrooms for added comfort. A versatile first-floor flex space is ideal for a home office, fitness room, media room, or guest space. The spacious primary suite features a custom walk-in closet with built-in organizers, providing exceptional storage and organization. The en-suite bathroom includes dual vanities and a large walk-in shower. The secondary bedroom features its own private full bathroom, offering comfort and privacy for family members or guests. One of the home's standout features is the expansive private rooftop deck, the perfect place to relax, entertain, or enjoy spectacular sunsets with partial ocean, mountain, and city views. Additional amenities include an attached two-car garage, interior laundry, central air conditioning, and abundant storage throughout. Ideally located in the sought-after Level One community, residents enjoy nearby parks, walking paths, shopping, dining, and convenient access to Newport Beach, world-class beaches, major freeways, and all that Costa Mesa has to offer. Don't miss this opportunity to lease a beautifully upgraded home offering modern finishes, exceptional indoor-outdoor living, and an outstanding coastal location.