Insights

Regional Growth Duffield is a mid-sized civil engineering firm with multiple regional offices in Delaware, Pennsylvania, New Jersey, and Maryland, indicating expansion potential and cross-market cross-selling opportunities for services beyond its core location.

Diversified Capabilities With services spanning civil, geotechnical, environmental, water and wastewater, construction materials testing, electrical, landscape, structural, traffic, and coastal engineering, there are numerous cross-sell opportunities to address broad client project needs.

Public Sector Focus The firm’s municipal and coastal/waterfront engineering strengths align with government and public infrastructure projects, suggesting sales motions targeting municipalities, state agencies, and related public works programs.

Strong Tech Footprint Adoption of tools like AutoCAD, ArcGIS, VMware, and other enterprise tech indicates capacity to deliver technology-enabled design, analysis, and project collaboration, which can be leveraged in proposals for data-driven or GIS-intensive projects.

Growth and Hiring Receptiveness to growth and ongoing recruitment signals a potential for sizable project pipelines and staffing needs, presenting opportunities for turnkey engineering teams, project management, and specialized services to augment client programs.

Similar companies to Duffield Associates

Duffield Associates Tech Stack

Duffield Associates uses 8 technology products and services including Veeam, AutoCAD, WordPress, and more. Explore Duffield Associates's tech stack below.

Duffield Associates's Email Address Formats

Duffield Associates uses at least 4 email formats:
Duffield Associates Email FormatsExamplePercentage
FLast@duffnet.comJDoe@duffnet.com
96%
First@duffnet.comJohn@duffnet.com
2%
Last@duffnet.comDoe@duffnet.com
1%
First.Last@duffnet.comJohn.Doe@duffnet.com
1%

Frequently Asked Questions

What is Duffield Associates's phone number?

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You can contact Duffield Associates's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Duffield Associates's official website and social media links?

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Duffield Associates's official website is duffnet.com and has social profiles on LinkedIn.

How much revenue does Duffield Associates generate?

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As of July 2026, Duffield Associates's annual revenue is estimated to be $10M - $25M.

What is Duffield Associates's SIC code and NAICS code?

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Duffield Associates's SIC code is 7389 - Business Services, Not Elsewhere Classified and NAICS code is 237 - Heavy and Civil Engineering Construction.

How many employees does Duffield Associates have currently?

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As of July 2026, Duffield Associates has approximately 57 employees across 1 continents, including North America. Key team members include President: V. B., Project Manager: J. T. and Project Manager: J. R. Explore Duffield Associates's employee directory with LeadIQ.

What industry does Duffield Associates belong to?

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Duffield Associates operates in the Civil Engineering industry.

What technology does Duffield Associates use?

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Duffield Associates's tech stack includes Veeam, AutoCAD, WordPress, Microsoft Active Directory, Cisco, VMware, Adobe Creative Suite and ArcGIS.

What is Duffield Associates's email format?

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Duffield Associates's email format typically follows the pattern of FLast@duffnet.com. Find more Duffield Associates email formats with LeadIQ.

When was Duffield Associates founded?

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Duffield Associates was founded in 1976.
Duffield Associates logo

Duffield Associates

Civil EngineeringDelaware, United States51-200 Employees

Duffield Associates, established in 1976, is a civil engineering firm headquartered in a historic barn and farmhouse in Pike Creek Valley near Wilmington, Delaware. It maintains regional offices in Dover, DE; Philadelphia and Carlisle, PA; Thorofare, NJ; and Bel Air, MD to serve clients across the mid-Atlantic, offering a broad suite of services across civil, environmental, water and wastewater, and related disciplines. The firm serves both public and private sector clients, addressing infrastructure development, environmental stewardship, and community-scale improvements through integrated multidisciplinary approaches. Its culture emphasizes cross-disciplinary collaboration and community engagement, with a 2018 Top Workplace recognition in Delaware and growth-oriented hiring, such as the 2017 appointment of a senior consultant.

Section iconCompany Overview

Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
237 - Heavy and Civil Engineering Construction
Founded
1976
Employees
51-200

Section iconFunding & Financials

  • $10M - $25M

    Duffield Associates's revenue is estimated to be in the range of $10M - $25M

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