About Us

Hillis-Carnes Capitol Services, PLLC (HCCS) is a multi-disciplined consulting engineering firm, specializing in Geotechnical Engineering, Construction Materials Testing and Inspections, Drilling and Subsurface Explorations, Environmental Consulting and Industrial Hygiene Services, Geostructural Engineering, Deep Foundations, Specialty Geotechnical Construction, Facilities Consulting, Construction Consulting and Third-Party Inspections, Geoscience, and Laboratory Testing services. HCCS is affiliated with Hillis-Carnes Engineering Associates, Inc. (HCEA), who has been providing their expertise, for both public and private sector clients, within Washington, DC and throughout the Mid-Atlantic region for over 30 years.

In 2015, the firm established a local office within The District, in order to be more accessible to its urban clients and projects and is a Certified Business Enterprise (CBE # LZ57595042022). In addition to being a CBE, more than half of our Field Staff resides in The District, enabling us to help clients achieve their District Resident Requirements/Goals as well. We recruit the best professionals available in the industry and employ over a dozen Professional Engineers, with a majority of our Project Managers being USACE QCM Certified. Our Technicians are trained, well experienced in, and certified to perform Special Inspections required by DCRA.