Top 20 General Contractors in Delaware

Delaware’s construction market continues to expand through investments in healthcare, education, manufacturing, commercial development, infrastructure, and residential communities. The leading general contractors in Delaware provide specialized expertise to manage complex projects across Wilmington, Dover, Newark, and coastal communities. These construction companies combine technical knowledge, modern building practices, and strong project management systems to deliver high-quality developments that support the state’s economic growth.

Top 20 General Contractors in Delaware

1. Bancroft Construction Company

Bancroft Construction Company is one of Delaware’s most established construction firms, with more than four decades of experience delivering commercial and institutional projects.

Headquartered in Wilmington, the company serves clients throughout Delaware, including New Castle County, Kent County, and Sussex County.

Bancroft specializes in construction management, general contracting, design-build services, and preconstruction planning.

Its Delaware project portfolio includes healthcare facilities, educational buildings, corporate offices, industrial facilities, and community developments.

The company has completed projects for universities, healthcare providers, government organizations, and private developers.

Bancroft focuses on collaborative construction delivery, using detailed scheduling, cost management, and quality control processes to improve project outcomes.

Its extensive local experience makes it one of the best general contractors in Delaware for commercial and institutional construction.

2. EDiS Company

Founded in 1908, EDiS Company is one of Delaware’s oldest and most respected construction companies.

Based in Wilmington, the company provides construction management, general contracting, and design-build services throughout Delaware and the surrounding region.

EDiS serves Wilmington, Newark, Dover, Rehoboth Beach, and other communities across the state.

Its projects include corporate headquarters, healthcare facilities, educational institutions, hospitality developments, laboratories, and government buildings.

The company has completed major Delaware projects involving office campuses, university facilities, healthcare expansions, and commercial developments.

EDiS uses advanced construction technologies, including Building Information Modeling (BIM), digital coordination, and integrated project delivery methods.

Its long history and technical expertise have established EDiS among the leading construction firms in Delaware.

3. Whiting-Turner Contracting Company

Whiting-Turner is a nationally recognized construction company with significant experience delivering projects throughout Delaware.

The company serves Wilmington, Newark, Dover, and surrounding markets with commercial construction and construction management services.

Its Delaware projects include corporate facilities, healthcare buildings, technology centers, higher education facilities, and industrial developments.

Whiting-Turner specializes in:

• Commercial construction
• Healthcare facilities
• Technology buildings
• Industrial projects
• Construction management

The company applies advanced construction methods, including BIM coordination, prefabrication, and digital project management systems.

Its ability to manage large and technically complex developments makes it one of the top construction companies in Delaware.

4. Wohlsen Construction Company

Wohlsen Construction Company has provided construction services across the Mid-Atlantic region for more than 125 years.

The company serves Delaware clients from its regional operations and delivers projects in healthcare, senior living, education, commercial, and institutional sectors.

Its Delaware service areas include Wilmington, Newark, Dover, and communities throughout the state.

Wohlsen has completed projects involving healthcare facilities, retirement communities, academic buildings, office developments, and public facilities.

The company provides:

• Construction management
• General contracting
• Design-build services
• Preconstruction consulting

Wohlsen focuses on sustainable construction practices, safety management, and efficient project delivery.

Its regional experience makes it a trusted partner among Delaware general contractors.

5. Gilbane Building Company

Gilbane Building Company is one of the largest privately held construction companies in the United States and has completed projects throughout Delaware.

The company serves government agencies, universities, healthcare organizations, and commercial developers.

Its Delaware projects include educational facilities, healthcare buildings, research spaces, and commercial developments.

Gilbane specializes in complex projects requiring advanced coordination, including healthcare, life sciences, higher education, and public facilities.

The company uses Lean Construction practices and digital building technologies to improve efficiency and reduce construction risks.

Gilbane’s national resources combined with local project expertise make it one of the leading commercial contractors in Delaware.

6. Allan Myers

Allan Myers is one of the largest heavy civil construction companies serving Delaware and the surrounding Mid-Atlantic region.

The company provides infrastructure construction services for transportation agencies, municipalities, utilities, and private developers.

Its Delaware operations support projects involving:

• Highways
• Bridges
• Road improvements
• Utility infrastructure
• Site development

The company has contributed to transportation improvements and infrastructure upgrades throughout Delaware.

Allan Myers uses advanced engineering methods, modern equipment, and experienced project teams to complete large-scale civil projects.

Its infrastructure expertise makes it a key contributor among licensed contractors in Delaware.

7. The Whiting-Turner Delaware Operations Team

Whiting-Turner’s Delaware operations support a wide range of commercial and institutional construction projects throughout the state.

The company serves businesses, universities, healthcare providers, and government organizations.

Its Delaware work includes office buildings, laboratory facilities, healthcare expansions, and commercial developments.

The company emphasizes:

• Preconstruction planning
• Cost control
• Schedule management
• Quality assurance

Its experience working with complex building systems allows it to deliver projects that require precise coordination among architects, engineers, and subcontractors.

8. Harkins Builders

Harkins Builders is a regional construction company with experience delivering residential, commercial, and institutional projects in Delaware.

The company serves clients throughout the state, including Wilmington, Dover, and Sussex County communities.

Its Delaware projects include multifamily housing developments, senior living facilities, educational buildings, and community projects.

Harkins specializes in:

• Residential construction
• Multifamily developments
• Commercial buildings
• Senior living communities

The company combines regional market knowledge with modern construction management practices to deliver durable and efficient buildings.

Its experience makes it one of the recognized residential contractors in Delaware.

9. Mount Vernon Construction

Mount Vernon Construction provides commercial construction services throughout Delaware and the surrounding region.

The company serves businesses, property owners, developers, and institutional clients.

Its projects include office renovations, retail developments, medical facilities, and commercial improvements.

Mount Vernon specializes in:

• General contracting
• Interior construction
• Renovation projects
• Commercial improvements

The company focuses on quality workmanship, responsive communication, and efficient project execution.

Its local knowledge allows it to support clients navigating Delaware’s construction requirements and permitting processes.

10. Mumford & Miller Concrete

Mumford & Miller Concrete is a Delaware-based construction company specializing in heavy civil and transportation infrastructure projects.

Founded in 1936, the company serves government agencies, transportation authorities, and private developers.

Its Delaware projects include bridges, highway improvements, concrete structures, and transportation infrastructure.

The company specializes in:

• Bridge construction
• Concrete construction
• Highway projects
• Infrastructure improvements

Mumford & Miller has played an important role in improving Delaware’s transportation network through durable infrastructure solutions.

Its technical expertise and decades of experience position it among the top construction companies in Delaware.

11. Harvey, Hanna & Associates

Harvey, Hanna & Associates is a Delaware-based development and construction company with extensive experience in commercial, industrial, and mixed-use projects.

The company serves clients throughout New Castle County, Kent County, and Sussex County, with a strong presence in Wilmington and surrounding business districts.

Its portfolio includes office complexes, industrial parks, distribution facilities, retail developments, and redevelopment projects.

The company provides:

• Commercial construction
• Real estate development
• Industrial projects
• Property redevelopment
• Construction management

Harvey, Hanna & Associates has contributed to Delaware’s economic development through projects that support business expansion, logistics, and commercial growth.

Its understanding of local markets and development requirements makes it a valuable partner among construction firms in Delaware.

12. Corrado Construction

Corrado Construction is a Delaware contractor specializing in commercial construction, renovations, and facility improvements.

The company serves Wilmington, Newark, Dover, and other communities throughout the state.

Its projects include office renovations, retail spaces, educational facilities, healthcare improvements, and commercial developments.

Corrado Construction provides:

• General contracting
• Construction management
• Renovation services
• Interior construction

The company works closely with owners, architects, and subcontractors to manage project schedules, budgets, and construction quality.

Its focus on customer relationships and local expertise has helped establish its reputation among building contractors in Delaware.

13. Duffield Associates

Duffield Associates provides engineering, consulting, and construction support services throughout Delaware.

The company works with developers, municipalities, government agencies, and contractors on commercial, residential, and infrastructure projects.

Its services support:

• Site development
• Civil engineering
• Environmental planning
• Construction coordination

Duffield has contributed to projects involving land development, transportation improvements, commercial properties, and public infrastructure.

The company’s technical expertise supports successful construction planning and execution across Delaware.

Richard Y. Johnson & Son Construction is a Delaware-based contractor with experience in commercial and institutional construction.

14. Richard Y. Johnson & Son Construction

The company serves clients throughout northern Delaware, including Wilmington, Newark, and surrounding communities.

Its projects include office buildings, renovations, healthcare improvements, and institutional facilities.

The contractor focuses on:

• Commercial construction
• Building renovations
• Facility upgrades
• Construction management

The company’s local knowledge and attention to construction quality make it a trusted option for businesses and organizations requiring reliable project delivery.

15. First State Building & Design

First State Building & Design provides residential and commercial construction services throughout Delaware.

The company serves homeowners, developers, and businesses across New Castle, Kent, and Sussex counties.

Its residential projects include custom homes, remodeling projects, additions, and property improvements.

The company also supports commercial clients with renovation and improvement work.

Its services include:

• Residential construction
• Custom building
• Remodeling
• Commercial improvements

As one of the residential contractors in Delaware, the company helps meet demand for housing upgrades and new construction across the state.

16. Diamond State Construction

Diamond State Construction provides commercial construction and renovation services for Delaware businesses and organizations.

The company serves Wilmington, Dover, Newark, and surrounding areas.

Its project experience includes office renovations, retail improvements, institutional facilities, and commercial buildings.

The contractor specializes in:

• Commercial construction
• Renovation projects
• Tenant improvements
• Building upgrades

Diamond State Construction focuses on delivering efficient solutions for clients seeking improvements to existing properties or new commercial spaces.

17. Wohlsen Construction Delaware Operations

Wohlsen Construction’s Delaware operations support a broad range of commercial and institutional projects throughout the state.

The company works with healthcare providers, senior living organizations, educational institutions, and private developers.

Its Delaware projects include:

• Healthcare facilities
• Senior living communities
• Academic buildings
• Commercial developments

Wohlsen applies modern construction practices, including Lean Construction methods and technology-based project coordination.

Its regional experience allows the company to manage projects requiring strong scheduling, safety management, and quality control.

18. Construction Solutions Inc.

Construction Solutions Inc. provides commercial construction services for businesses and organizations throughout Delaware.

The company serves clients in Wilmington, Dover, and surrounding communities.

Its projects include commercial renovations, office improvements, retail construction, and facility upgrades.

The company specializes in:

• General contracting
• Commercial renovations
• Construction management
• Interior improvements

Construction Solutions focuses on practical project delivery, helping clients improve facilities while maintaining operational efficiency.

Its services support Delaware’s continued commercial development.

19. Benchmark Builders

Benchmark Builders is a regional construction company serving Delaware and surrounding Mid-Atlantic markets.

The company works with commercial developers, institutional clients, and property owners.

Its Delaware projects include office buildings, retail developments, healthcare facilities, and community projects.

Benchmark provides:

• Construction management
• General contracting
• Preconstruction services
• Commercial development support

The company emphasizes collaboration, cost management, and detailed planning throughout the construction process.

Its experience contributes to Delaware’s expanding commercial real estate market.

20. Duffield Construction Services

Duffield Construction Services supports Delaware projects through construction management, engineering coordination, and development services.

The company serves commercial clients, municipalities, and property developers across the state.

Its work includes:

• Commercial buildings
• Site development
• Infrastructure improvements
• Facility projects

The company combines technical expertise with knowledge of Delaware’s construction environment.

Its ability to support complex developments makes it a notable contributor among construction companies in Delaware.

Delaware’s Leading Contractors Continue Shaping the Built Environment

The top general contractors in Delaware represent a diverse group of companies supporting commercial, residential, institutional, industrial, and infrastructure development across the state.

From Wilmington’s corporate developments to manufacturing facilities, healthcare campuses, transportation improvements, and residential communities, these contractors provide the expertise needed to complete complex projects efficiently.

Delaware construction companies continue adopting modern approaches such as Building Information Modeling (BIM), sustainable construction practices, prefabrication, and digital project management. These technologies help improve coordination, reduce waste, and deliver better project outcomes.

The state’s strategic location between major metropolitan markets, including Philadelphia, Baltimore, and Washington, D.C., continues to attract business investment and development opportunities. Experienced construction firms in Delaware remain essential partners in delivering the facilities and infrastructure required to support this growth.