Hilton Head Beach House
Ocean Residence in Hilton Head, SC
2011
Hilton Head Beach House
The Project
This project involved the construction of a 12,000 sq. ft. oceanfront residence on Hilton Head Island, SC. The architectural vision was “lowcountry-modern,” a style characterized by large cantilevers, vast expanses of glass, and a unique integration of concrete, steel, and cross-laminated timber (CLT). Key features include an above-ground, endless-edge pool with aquarium glass and a sleek glass handrail system.
The Challenge
The design team faced several significant challenges. Architecturally, the goal was to achieve the modern aesthetic with large cantilever spans and seamless, exposed connection-free details while securing approval from a discerning HOA architectural review board. Structurally, the beachfront location demanded robust solutions for hurricane-force winds (130 mph ASD), foundation scour from storm surge, and seismic/liquefaction risks associated with the nearby Charleston area. Materially, the project involved incorporating Cross-Laminated Timber (CLT), which was a novel decking system at the time, and sourcing the largest wind-load-tested windows on the East Coast that also had to meet energy and local “turtle glass” environmental codes.
The Solution
To overcome these challenges, the team employed a series of innovative engineering solutions. The foundation was secured with 65-foot deep concrete auger cast piles to protect against scour and liquefaction. The structure’s ambitious cantilevers and open spaces were realized through a hybrid framing system of concrete, steel, and precisely CNC-milled CLT panels. To prevent rebar corrosion from the salty air, stainless steel embed plates were used to isolate the deck’s support beams. The glass handrail system underwent extensive analysis to ensure it could withstand 200 lbs of force in any direction, meeting safety requirements without compromising the minimalist design.
The Improvements
This residence marked a significant step forward in residential construction for the region. It was one of the first known uses of a Cross-Laminated Timber (CLT) decking system on a project of this scale, showcasing the viability of mass timber in demanding coastal environments. Furthermore, the project pushed the boundaries of fenestration technology by successfully engineering and installing the largest windows on the East Coast tested for high-velocity hurricane winds, setting a new benchmark for resilient and beautiful coastal architecture.
The Results
The completed Ocean Residence is a stunning example of lowcountry-modern architecture that harmonizes bold design with formidable structural integrity. The innovative use of materials and engineering foresight resulted in a secure, resilient home that can withstand extreme weather events while offering breathtaking ocean views through its massive glass walls. The project successfully met the architect’s aesthetic vision, the homeowner’s desire for a unique residence, and the stringent requirements of the local building and environmental codes.
