Headquartered just outside of Philadelphia, Olsen Associates is located in an expanding suburban environment with quick access to the tri-state area. We specialize in UAS (unmanned aircraft systems), with a specialty in construction management and oversight. Whether you are looking for project progression photos and videos, 3D modeling, basic inspections or erosion and sediment control, we provide a world class professional service. Our Crew bring extensive experience in both construction engineering and UAS aviation. The blend of construction engineering, data analytics and UAS expertise provides Olsen Associates LLC a proven edge for all your business needs.