Designed as a private Oasis, 518 South Portland Avenue in Newcastle is a rare convergence of luxurious engineering, artistic expression & enduring craftsmanship, custom built in 2013 and surrounded by 10 acres of secluded Oklahoma landscape, just minutes from modern conveniences. Accessed by a private road shared by only four residences, this ICF-constructed Barndominium offers exceptional structural integrity, energy efficiency, and quiet comfort. Every aspect of the build reflects intentional engineering choices designed for longevity, performance, and daily ease. Inside, three bedrooms and 3 Bathrooms and a half bath balance openness with retreat. A spacious living room flows into a large dining area, ideal for everyday living and entertaining. A laundry area and side entry with a beautifully painted mud area add functional elegance. The kitchen features granite countertops, two oversized islands with cabinetry, a built-in gas cooktop, double ovens, and slate floors, creating a space that is both artistic and livable. The primary suite is privately positioned, showcasing painted artistic wood detailing, a whirlpool soaking tub, and an elegantly tiled shower. On the opposite side, two additional bedrooms are separated by a private hallway, with a secondary bathroom and custom-shelved closet between them. A central vacuum system is seamlessly integrated. Deer and wildlife are frequent visitors, reinforcing the property s sense of privacy and connection to the land without sacrificing modern comfort. Exterior features include metal siding and roof, covered front and back porches with exposed wood beams, an attached two-car garage, a one-acre pond, wooded acreage with a dam, open land, a 30 x 50 shop with concrete flooring, and an above-ground pool. Served by public water and natural gas. Tucked discreetly behind an existing development, the property unfolds into a world apart your new Oasis. Paradise isn t promised here. It s already present.