Welcome to 27 Highland Avenue, a stunning Victorian farmhouse offering 3,180 sq. ft. of beautifully maintained living space across three levels. Rich in historic character and thoughtfully updated for modern living, this 4-bedroom, 1 full and 2 half-bath home showcases a striking mansard roof, ornate exterior moldings, decorative trim, and an attached barn with a two-car garage. Inside, timeless craftsmanship has been lovingly preserved, including original refinished doors, antique hardware, detailed woodwork, and a beautiful tin ceiling in the dining room. The custom kitchen features stainless steel appliances, including an induction range, fantastic work space and opens seamlessly to a welcoming sitting room with a ceramic gas stove and spacious living room beyond. Tall ceilings and oversized windows fill the home with natural light. An office, laundry room, and updated half bath complete the first floor. The second level offers three bedrooms, an updated full bath, and a primary suite with walk-in closet and private half bath. The expansive third floor serves as the fourth bedroom and offers outstanding potential for a future primary suite, studio, or bonus living space. Designed with efficiency in mind, the home features mini-split heating and cooling on the first and second floors, an owned 10kW solar array, and an Energy Star-rated condensing oil boiler capable of operating at up to 94% efficiency. Additional highlights include abundant basement storage and the versatility of the attached barn. Conveniently located within walking distance of downtown South Berwick, Berwick Academy, local shops and restaurants, hiking trails, and Powder House Hill's skiing and recreation area. This rare offering combines historic charm, modern comfort, and exceptional energy efficiency in one of South Berwick's most desirable locations. Showings begin right away. Open houses Thursday and Friday from 4pm-630pm, and Sunday from 1-3.