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


Private Civil engineering represents one of CPJ’s core services. Our extensive expertise in site development planning and engineering allows us to coordinate across multiple disciplines to produce innovative designs that exceed expectations for our builder and developer clients. Our Residential and Commercial specialists focus on projects ranging from a single lot to large scale mixed use developments. CPJ personnel work closely together with other consultants (Architects, M.E.P., etc.) to coordinate the various design components associated with commercial and residential projects. In addition, our technical expertise allows us to confidently assess any situation and make a reliable recommendation as to how to proceed. Office technology such as our computer-aided drafting and design (CADD) system and our geographic information system (GIS) allow us to remain ahead of the technology curve and maintain high productivity. The staff works closely with our clients to keep them and all other stakeholders informed of job progress and to stay in touch with their needs. CPJ has a great deal of experience working for private sector clients to meet their civil engineering needs.

Services include but are not limited to:

General Engineering
  • Construction Plans and Specifications
  • Bid Documents
  • Cost Estimates
  • Public Meetings
  • Permit Processing
  • As-Built Plans
  • Construction Management and Inspections
  • GIS Database Development and Management
  • Expert Witness
Roadway Engineering
  • Sight Distance Analysis
  • Cross Section Development
  • Alignment Studies
  • Utility Relocation and Coordination
  • Pavement Marking and Signage
  • Traffic Control
Site Development Engineering
  • Feasibility Studies
  • Preliminary Engineering Concepts
  • Sediment and Erosion Control
  • Utility Layout
  • Water Distribution Systems
  • Sanitary Collection Systems
  • Earthwork Calculations
  • Grading Plans
  • Storm Drain Design
  • Pavement Plan Design
  • Stormwater Management Design utilizing Environmental Site Design (ESD) techniques
  • Floodplain studies
  • NPDES permitting


Gunner's Lake Village
Stanley Martin Communities


© 2016 Charles P. Johnson & Associates, Inc.