About

Aaron Crossley is a seasoned builder, security expert, and former Green Beret who brings battle-tested precision and tactical expertise to the homebuilding industry. With a distinguished military career serving as a U.S. Army Special Forces Weapons Sergeant, Aaron specialized in strategic defense, security operations, and structural reinforcements in high-risk environments. He later transitioned to diplomatic protective security, leading elite security teams that safeguarded personnel in some of the world’s most volatile regions. Through these experiences, he gained unparalleled knowledge in risk assessment, defensive infrastructure, and resilience planning — all of which now shape our approach to construction.

At Sentinel, Aaron applies the same level of discipline, foresight, and attention to detail that defined his military and security career. He founded Sentinel with a clear mission: to build homes that don’t just shelter families, but actively protect them. Under Aaron’s leadership, Sentinel is setting a new standard in residential security and craftsmanship, giving families the peace of mind that comes from living in a home designed by someone who truly understands protection.