1751 Elton Road
Suite 300
Silver Spring, MD 20903
Ph: 301.434.7000
Fx: 301.434.9394

3959 Pender Drive
Suite 210
Fairfax, VA 22030
Ph: 703.385.7555
Fx: 703.273.8595

804 Diamond Avenue
Suite 208
Gaithersburg, MD 20878
Ph: 301.208.9573
Fx: 301.926.4551

4920 Niagara Road
Suite 308
College Park, MD 20740
Ph: 301.220.0600
Fx: 301.434.9394

129 West Patrick Street
Suite 13
Frederick, MD 21701
Ph: 301.698.9788
Fx: 301.698.9789

45 Old Solomons Island Road
Suite 204
Annapolis, MD 20878
Ph: 410.266.5599
Fx: 410.266.3871


CPJ is a full-service civil engineering firm that has provided quality surveying, land planning, and engineering services to both the public and private sector since 1971. We are comprised of approximately 75 talented employees including licensed engineers, professional surveyors, and registered landscape architects. 

CPJ has maintained quality, reliability and cost competitiveness by using a highly proficient staff.  We are leaders in the use of advanced technology, both in equipment and staff training. Our knowledge of and comfort level with modern methods allows us to consistently produce a high quality product, control costs and meet deadlines. Our five core services - Planning, Engineering, Public Sector, Surveying, and Environmental Services - work cohesively to provide seamless customized services to our private and government clients.
CPJ’s corporate office is based in Silver Spring, MD with branch offices in Gaithersburg, College Park, Frederick, and Fairfax, VA.
© 2016 Charles P. Johnson & Associates, Inc.