Unveiling RiverRock: Frank Lloyd Wright’s Last Design Comes to Life

In a remarkable turn of events, the previously unbuilt architectural design by Frank Lloyd Wright has finally been realized after lying dormant for over six decades. RiverRock House, Wright’s last residential commission, was constructed by Sarah Dykstra and her mother, Debbie Dykstra, on property in Willoughby Hills, Ohio. The project was inspired by the discovery of original blueprints belonging to Wright, which were found on the drawing board the day he died in 1959.

The blueprints, known as Project #5909, had been forgotten for years after being delivered to the Penfield family during Wright’s funeral week. This discovery sparked a journey that would not only revive Wright’s vision but also redefine architectural preservation. The plans showcased a unique design that emphasized harmony with nature, featuring locally sourced materials and a specific orientation around a poplar tree that still stands today.

Transforming a Vision into Reality

When Sarah Dykstra purchased the original property in 2018, she was unaware that it included one of architecture’s greatest mysteries. Alongside a 1955 Wright house, she acquired the unbuilt plans for RiverRock House, which encouraged her to embark on a mission to bring Wright’s vision to life. Working closely with her mother, the duo faced the challenge of modernizing construction while remaining faithful to Wright’s original intentions.

They set a firm guideline: any necessary changes due to contemporary building codes must remain hidden beneath the house’s exterior. This careful approach ensured that Wright’s aesthetic vision remained intact while accommodating modern safety standards. Construction began in late 2022, with teams following Wright’s specifications and incorporating updated structural engineering requirements.

A significant breakthrough occurred when they uncovered a cache of stones originally collected by Louis Penfield in the 1960s, which matched Wright’s specifications for the project. By January 2025, RiverRock House was completed, perfectly aligning with Wright’s vision from 66 years prior.

Embracing Organic Architecture

Wright’s design philosophy centered on organic architecture, which is evident in every aspect of RiverRock House. The structure is meticulously oriented around the existing poplar tree, demonstrating Wright’s commitment to creating homes that grow from the landscape. The house embodies the principles of Usonian design, aimed at providing affordable yet aesthetically pleasing dwellings for middle-class families.

The layout features a distinctive P-shape that harmonizes with the natural terrain. Stone walls seamlessly transition to floor-to-ceiling glass panels, fostering a connection between indoor and outdoor spaces. The home is partially embedded into a natural berm and topped with Wright’s signature overhanging roof, enhancing the visual continuity with the surrounding environment.

Modern adaptations, such as hidden HVAC systems and radiant heated floors, ensure that the home meets contemporary living standards without detracting from its historical authenticity. Each room is designed to maximize natural light while ensuring privacy, in line with Wright’s attention to spatial flow and human comfort.

Visitors to RiverRock experience the culmination of Wright’s architectural philosophy firsthand. The house offers an immersive environment where guests can appreciate his mastery of design and the seamless integration of nature.

As a functional residence, RiverRock House transforms traditional architectural tourism. Guests can stay overnight, beginning at $800 per night on weekdays, and $1,000 on weekends, allowing them to engage with Wright’s design principles in a practical context. Extended stays are available, starting at $5,500 for a week, offering a unique opportunity to witness how Wright’s designs accommodate daily life.

Located at 2217 River Road in Willoughby Hills, the property offers easy access for architecture enthusiasts while providing a serene retreat that upholds Wright’s vision of architecture as a means to enhance human connection with nature. The project has gained further recognition through the four-part series “The Last Wright,” which premiered on September 3, 2025 on the Magnolia Network, documenting the entire construction process.

As RiverRock House opens its doors, it stands as a testament to the enduring legacy of Frank Lloyd Wright and the potential of authentic preservation paired with modern functionality. For those who have admired Wright’s work from afar, this project offers a rare opportunity to experience his architectural philosophy in a living context, bridging the past with the present.