Largest construction companies in Pennsylvania

Pennsylvania has one of the largest construction economies in the country, and the firms behind it reflect the state’s range — from Philadelphia and Pittsburgh engineering giants to family-owned builders that have worked the same regions for more than a century. Several rank among the largest contractors in the United States.

This post ranks the largest construction companies headquartered in Pennsylvania by their position on Engineering News-Record’s 2026 Top 400 Contractors list, which ranks firms by their 2025 construction revenue. Every revenue figure and rank below comes from ENR’s published list; sources are linked throughout.

The largest construction companies in Pennsylvania

Here are the largest Pennsylvania-headquartered contractors on ENR’s 2026 Top 400, ranked by national position.

Source: ENR 2026 Top 400 Contractors (2025 revenue).

Day & Zimmermann

Headquarters: Philadelphia, Pennsylvania 2025 revenue (ENR 2026 Top 400): $1,720.0 million — national rank #78

Day & Zimmermann is a privately held, family-owned firm founded in Philadelphia in 1901 and still led by the Yoh family. Across all its lines of business it employs roughly 32,000 people and runs more than 900 work locations, though its Top 400 revenue comes primarily from the construction and maintenance side of the business rather than general building work.

Day & Zimmermann’s services include:

• construction and maintenance
• engineering and design
• operations and maintenance (O&M)
• nuclear maintenance and modifications
• staffing and workforce solutions

The company has extensive experience servicing the following sectors:

• nuclear and power generation
• fossil, gas, and hydro
• chemical and industrial
• data centers and advanced manufacturing
• government and defense

Day & Zimmermann is organized around a maintenance-and-construction business that serves the energy sector, performing outage work, plant modifications, and capital construction for power and industrial clients. It’s an engineering and maintenance company first, which is why its construction revenue places it high on the Top 400 without being a conventional general contractor.

Allan Myers

Headquarters: Worcester, Pennsylvania 2025 revenue (ENR 2026 Top 400): $1,497.1 million — national rank #94

Allan Myers is the largest self-performing heavy civil contractor and construction materials supplier in the Mid-Atlantic, founded in 1939 and family-owned into its fourth generation. The company builds transportation and water infrastructure across Pennsylvania and neighboring states and produces its own asphalt and aggregate.

Allan Myers’ services include:

• heavy civil and site construction
• design-build delivery
• road and highway paving
• bridge construction
• asphalt and aggregate materials supply

The company has extensive experience servicing the following sectors:

• highways and transportation
• bridges
• water and wastewater
• site development
• public works and private development

Allan Myers was ranked among Associated Builders and Contractors’ Top 250 Performers and its paving group won seven 2025 Quality in Construction Awards from the National Asphalt Pavement Association. In Pennsylvania, the firm is delivering a four-year, $214 million Pennsylvania Turnpike widening and reconstruction project in Chester County.

PJ Dick – Trumbull – Lindy Group

Headquarters: Pittsburgh, Pennsylvania 2025 revenue (ENR 2026 Top 400): $1,482.0 million — national rank #96

PJ Dick was founded in 1979 by Perry J. Dick and remains family-owned. Together with sister companies Trumbull Corporation and The Lindy Group, it forms a group that covers vertical building, heavy highway construction, and paving across the Mid-Atlantic, and it has ranked among ENR’s Top 100 general contractors for years.

PJ Dick’s services include:

• construction management at risk
• general contracting
• design-build
• preconstruction and estimating
• self-perform work (concrete, wood framing, miscellaneous metals)
• virtual and sustainable construction

The group has extensive experience servicing the following sectors:

• higher education
• healthcare
• commercial and mixed-use
• government
• sports and entertainment
• industrial and energy (through Trumbull and Lindy)

PJ Dick has been named a two-time Best Places to Work honoree, and in 2023 the group established the PJ Dick Innovation Fund at Carnegie Mellon University’s School of Architecture, a $400,000 faculty grants program supporting research on climate, social justice, and technology in the built environment.

Rycon Construction

Headquarters: Pittsburgh, Pennsylvania 2025 revenue (ENR 2026 Top 400): $1,220.0 million — national rank #110

Rycon is a 100% employee-owned general contractor founded in 1989 by Todd Dominick and Bill Taylor. What started as a three-person interior contractor now employs roughly 850 people across nine offices and completes more than $1.2 billion in work a year, with an 86% repeat-client rate.

Rycon’s services include:

• preconstruction and planning
• general contracting and construction management
• design-build and integrated project delivery
• architectural woodwork and specialty fabrication
• MEP coordination and BIM

The company has extensive experience servicing the following sectors:

• commercial and retail
• senior living and multifamily
• higher education
• food, beverage, and hospitality
• healthcare and industrial

Rycon climbed 28 spots to rank among ENR’s Top 400 Contractors and is an ENR Top 100 Green Contractor, and it has repeatedly been named the largest Pittsburgh-area contractor by the Pittsburgh Business Times. Its recent institutional work includes Christ the Teacher Hall at Franciscan University of Steubenville.

IPS-Integrated Project Services

Headquarters: Blue Bell, Pennsylvania 2025 revenue (ENR 2026 Top 400): $1,167.5 million — national rank #114

IPS is a Berkshire Hathaway company founded in 1989 that designs and builds technically complex facilities for the pharmaceutical and biotechnology industries. The firm pioneered the EPCMV delivery method — engineering, procurement, construction management, and validation under one contract — and employs more than 1,800 professionals across offices in ten countries.

IPS’s services include:

• architecture and engineering
• procurement and construction management
• commissioning, qualification, and validation (CQV)
• process and regulatory consulting
• integrated EPCMV project delivery

The company has extensive experience servicing the following sectors:

• pharmaceutical manufacturing
• biotechnology and biologics
• cell and gene therapy
• vaccine manufacturing
• research and development facilities

IPS works on some of the largest life-sciences facilities in the world, including large-scale biologics and drug-substance manufacturing plants delivered through its integrated design-build model. Its position on the Top 400 reflects a specialized facilities builder rather than a general commercial contractor.

Wohlsen Construction

Headquarters: Lancaster, Pennsylvania 2025 revenue (ENR 2026 Top 400): $671.5 million — national rank #201

Wohlsen Construction was founded in Lancaster in 1890 by Herman F. Wohlsen, a carpenter who had immigrated from Germany, and the company has stayed a full-service builder for more than 135 years. It runs roughly $900 million in annual volume through offices across Pennsylvania, Delaware, Maryland, Virginia, New Jersey, and Connecticut.

Wohlsen’s services include:

• preconstruction
• construction management
• general contracting
• design-build
• virtual design and construction technology

The company has extensive experience servicing the following sectors:

• senior living
• healthcare
• higher education
• corporate and commercial
• historic renovation

Wohlsen has been recognized nationally and regionally by the Associated Builders and Contractors more than 350 times since 1990, and it earned an ENR MidAtlantic Best Regional Project Award for an 11-story senior living community designed by Perkins Eastman. Wohlsen also plans its workforce with Bridgit — in its own account of the switch, the team traded spreadsheets for a single view of who’s available and where, described in this Wohlsen case study.

S&B USA Construction

Headquarters: Pittsburgh, Pennsylvania 2025 revenue (ENR 2026 Top 400): $656.7 million — national rank #205

S&B USA Construction is the American construction arm of the international infrastructure group Shikun & Binui, run out of Pittsburgh. Its self-performing unit, Fay, has built heavy civil infrastructure across Pennsylvania, Maryland, and Virginia for more than 75 years, and the company focuses on large, complex projects often delivered through public-private partnerships and design-build.

S&B USA’s services include:

• heavy civil construction
• design-build delivery
• construction management
• public-private partnership (P3) delivery
• self-perform bridge and structures work (through Fay)

The company has extensive experience servicing the following sectors:

• highways and roadways
• bridges and tunnels
• airports
• dams and ports
• industrial sites

Fay, S&B USA Construction won the Pennsylvania Turnpike Commission’s $270 million Beaver River Bridge project in Beaver County, and in early 2026 was awarded a $39 million PennDOT contract to replace the Layton Bridge over the Youghiogheny River in Fayette County. It is also delivering a $154 million roads-and-bridges package for the Pittsburgh International Airport modernization.

IMC Construction

Headquarters: Malvern, Pennsylvania 2025 revenue (ENR 2026 Top 400): $476.0 million — national rank #266

IMC Construction is a Malvern-based commercial general contractor founded in 1976 and the largest minority-owned commercial general contractor in the country. The firm delivers ground-up and renovation work across the Greater Philadelphia region and the Mid-Atlantic.

IMC’s services include:

• preconstruction
• general contracting and construction management
• design-build
• BIM and virtual design (VDC)
• sustainable construction

The company has extensive experience servicing the following sectors:

• commercial and office
• healthcare
• higher education
• multifamily and senior living
• life sciences and labs

IMC was named Engineering News-Record’s 2025 MidAtlantic Contractor of the Year. Its recent Pennsylvania projects include the Ellis mass timber office building in Newtown Square, the region’s first mass timber commercial office building, and it is construction manager for Greystar’s first residential communities in the Philadelphia suburbs, the Great Valley Apartments and the age-restricted Album Great Valley.

T N Ward Co.

Headquarters: Ardmore, Pennsylvania 2025 revenue (ENR 2026 Top 400): $429.3 million — national rank #296

TN Ward Company is a Philadelphia-area general contractor founded in 1918 as the Frank H. Wilson Company, with its headquarters in Ardmore and a second office in Atlantic City. The firm self-performs a range of trades and has built long-running client relationships, some spanning more than 25 years.

TN Ward’s services include:

• preconstruction
• general contracting and construction management
• self-perform work (concrete, formwork, carpentry, drywall, millwork)
• building information modeling (BIM)
• value engineering

The company has extensive experience servicing the following sectors:

• commercial and office
• institutional
• cultural
• higher education
• healthcare

TN Ward is ranked among the top contractors in the Philadelphia area by the Philadelphia Business Journal and appears annually on ENR’s Top 400 as well as its Top 100 Green Contractors list. The firm credits its self-perform capability and its superintendents’ hands-on craft backgrounds for a high level of repeat business.

Quandel Enterprises

Headquarters: Harrisburg, Pennsylvania 2025 revenue (ENR 2026 Top 400): $374.1 million — national rank #316

Quandel is a fifth-generation, family-owned firm founded in 1882 by Emil Quandel as a limekiln and building-materials supplier in Minersville, Pennsylvania. More than 140 years later it operates as a family of companies — including Quandel Construction Group, Pyramid Construction, and Quandel Energy Solutions — run from Harrisburg.

Quandel’s services include:

• construction management
• general contracting
• design-build
• preconstruction
• energy and sustainability solutions

The company has extensive experience servicing the following sectors:

• healthcare
• higher education
• senior living
• PK-12 and civic
• water and wastewater

Quandel’s recent Pennsylvania work concentrates in healthcare and education, including a PAM Health School of Nursing building for Lebanon Valley College and hospital projects for St. Luke’s University Health Network, Geisinger, and UPMC across central and eastern Pennsylvania.

Notable mentions

Wohlsen Construction (#201, Lancaster) plans its workforce with Bridgit, trading manual spreadsheets for a single, real-time view of who’s available, what they’re working on, and when they’ll be free. Read how Wohlsen uses Bridgit to plan its people.

Bridgit is the workforce planning software of choice for construction companies in Pennsylvania

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• run workforce planning sessions from anywhere
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• keep project and people data in one source of truth

Learn more about Bridgit, or book a demo to see it on your own projects.

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