CLSI has in depth experience in the planning, design, and permitting of a variety of civil engineering projects. This includes site development for residential, institutional, industrial commercial and municipal projects, as well as linear utility projects.

Learn more


CLSI is able to provide a full range of land surveying services for a variety of types of private and public sector projects. We provide services throughout the life of the project from field surveys and title / deed research to construction stakeout and as-built surveys.

Learn more

Environmental Consulting

With over 20 years of permitting experience our professional staff has successfully navigated both private and public sector projects through the Federal & State Wetland Permitting Process.

Learn more


HouseCLSI has a diverse staff of qualified professionals experienced in providing a wide variety of planning, engineering, surveying, and environmental consulting services. This allows us to serve the needs of various private and public sector clients in Maryland and Pennsylvania. Our staff included professionally licensed engineers and surveyors with an intimate knowledge of their project assignments from concept through completion.

Located in Central Maryland, CLSI has easy access to all regional project sites as well as to State agencies. We have the staff and technical capability to consistently handle your projects with state-of-the-art technology and innovative approaches that are on the leading edge of the engineering and surveying profession.

magPicServing the community for over 40 years, we are committed to providing innovative, cost-effective and responsive services. We have a forward-thinking attitude coupled with a commitment to excellence. Our professional team delivers service in a timely, efficient and accurate manner.

Important to our success is that we continue to meet the needs of our clients consistently. We are dedicated to maintaining a high level of performance and satisfaction. It is very fulfilling to us that 90% of our business consists of repeat customers. CLSI is committed to meeting the needs of our clients – on time, for a reasonable fee, and with the highest level of quality.