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50+ Years
experience
Your Trusted Partner for Civil Engineering Solutions
Since 1971, Charles P Johnson & Associates has been a trusted civil engineering firm dedicated to delivering comprehensive solutions for private and public sector clients. Our team of seasoned professionals brings over 500 years of combined expertise to every project, ensuring meticulous attention to detail and unwavering commitment to client satisfaction. With six strategically located offices, we leverage local knowledge and established community relationships to execute projects of varying scales efficiently. Our client-focused culture prioritizes exceptional service, superior technical products, and timely delivery, supported by a proven track record of successful collaborations with architects, MEP consultants, and regulatory agencies.

Recognized for our award-winning work in land planning, civil engineering, and surveying, we maintain a steadfast dedication to excellence that sets industry standards. Our strategic approach to project management ensures seamless coordination across disciplines, enabling innovative designs that consistently exceed client expectations.
Services
Land Planning Civil Engineering Environmental Services Surveying Landscape Architecture Custom Homes GIS Construction Management Dam Engineering Stormwater Management
Details
  • Year established: 1971
Highlights and features
  • We offer over 500 years of combined engineering expertise across our tenured staff.
  • Our client-focused culture guarantees superior technical products and prompt delivery.
  • Six regional offices provide localized expertise for efficient project execution.
  • Award-winning track record in complex civil engineering and land development projects.
  • Proven success in coordinating multidisciplinary teams for comprehensive solutions.
Services
Land Planning
Our land planning services integrate zoning regulations, environmental considerations, and infrastructure requirements to create functional, sustainable developments. We collaborate with architects and municipal agencies to optimize site layouts for residential, commercial, and mixed-use projects. Our expertise ensures compliance with local ordinances while maximizing land value and usability.
Civil Engineering
We provide comprehensive civil engineering solutions for transportation systems, utility networks, and public works projects. Our team specializes in roadway design, pedestrian safety improvements, and stormwater management systems that meet federal and state standards. We maintain long-term contracts with multiple municipal agencies for ongoing infrastructure development.
Environmental Services
Our environmental services focus on stream restoration, wetland delineation, and regulatory compliance for development projects. We conduct environmental impact assessments and develop mitigation strategies that balance ecological preservation with client objectives. Our specialists ensure adherence to federal environmental protection requirements.
Surveying
We offer topographic, boundary, and construction surveying services using advanced geospatial technology. Our surveys support accurate project design and implementation through precise land measurement and mapping. We maintain up-to-date equipment and methodologies to ensure survey accuracy within strict tolerances.
Construction Management
Our construction management team provides quality control, schedule coordination, and regulatory compliance monitoring for infrastructure projects. We act as client representatives during construction phases, ensuring adherence to design specifications and budget parameters through regular site inspections and progress reporting.
Questions
What geographic areas do you serve?
We operate across the Washington D.C. metropolitan area with offices in Maryland and Virginia, serving projects in Montgomery County, Fairfax County, and surrounding regions.
What types of engineering projects do you specialize in?
Our expertise includes land development planning, stormwater management, roadway design, and infrastructure projects for both public agencies and private developers.
How long has your firm been in business?
Charles P. Johnson & Associates has provided civil engineering services since 1971, maintaining continuous operations for over 50 years.
Do you work with both public and private sector clients?
Yes, we serve both sectors with dedicated teams handling municipal contracts and private development projects across residential, commercial, and institutional markets.
What makes your firm different from other engineering companies?
Our client-focused approach combines multidisciplinary coordination, local regulatory expertise, and a proven track record of successful on-call contract performance with multiple government agencies.