Civil engineers
Dewberry
Dewberry is a family-owned national firm of planning, design and construction professionals. Its services cover engineering, architecture and interior design, environmental, geospatial mapping and survey, construction, technology, and planning, consulting and advisory work.
For property owners and developers, the relevant work spans site and land development engineering, stormwater management, environmental planning and permitting including NEPA due diligence, wetlands and natural resources services, hazardous materials assessment and remediation, cost estimating and scheduling, and construction administration. Project delivery includes design-build, progressive design-build, construction management-at-risk and bid construction, along with renovation and modernization of existing buildings.
Markets listed include real estate and commercial development, community facilities, education, energy, federal, health and wellness, industrial, justice, telecommunications, transportation, water, and risk, response, recovery and resilience. The firm reports 2500+ employees, 50+ locations nationwide, $763.00 million in 2025 revenue and rank #35 on the ENR Top 500 Design Firms list, with a stated legacy of 70 years.
Its quality management system is certified to the ISO 9001:2015 standard by National Quality Assurance, and the firm states it is NSF/ANSI 391.1 certified. No fees are published; scope and price are set project by project. The corporate number listed is 703.849.0100.
Best for
Owners and developers who need site civil engineering, environmental permitting, resilience work or building design from one national firm, particularly where federal or public-sector procurement is involved. A single small site plan is usually better served locally.
What they do
- Site and land development engineering
- Environmental planning, permitting and NEPA due diligence
- Stormwater management
- Wetlands and natural resources services
- Hazardous waste assessment, investigation and remediation
- Geospatial, mapping and survey
- Architecture and interior design
- Planning, consulting and advisory
- Construction management and design-build
- Risk, response, recovery and resilience consulting
- Cost estimating and scheduling
Details
| Attribute | Value |
|---|---|
| Ownership | Private |
| Team size | 1,000+ employees |
| Memberships | ISO 9001:2015 certified by National Quality Assurance, NSF/ANSI 391.1 certified |
What stands out
- Reports 2500+ employees and 50+ locations nationwide.
- Reports $763.00 million in 2025 revenue and rank #35 on the ENR Top 500 Design Firms list.
- Quality management system certified to ISO 9001:2015 by National Quality Assurance; the firm also states NSF/ANSI 391.1 certification.
- Family owned, with a stated legacy of 70 years in planning, design and construction.