Leadership Team

The leadership team at W. S. Cumby has worked together for years to insure W. S. Cumby fulfills its mission to be the highest caliber general construction and construction management firm in the Philadelphia area. Together they represent nearly a hundred years of service to W. S. Cumby.

William S. Cumby, Jr.

William S. Cumby, Jr. - LEED AP BD+C - President

William (Bill) S. Cumby, Jr. founded W.S. Cumby with his late father, William S. Cumby, Sr., in 1981, served as Vice President from 1981-1998 and as President since 1998. Bill Jr. has been an active member of his community having served as Mayor of Swarthmore, Pennsylvania, President of the Swarthmore Business District Authority, member of the Swarthmore Planning Commission and trustee of the Swarthmore Presbyterian Church. Additionally, Bill Jr. is a Past President and Trustee of the Carpenters' Company of Philadelphia and has been an active member since 1999. Bill Jr. holds a Bachelor of Arts degree from Gettysburg College, a Masters of Science degree from the University of Pennsylvania and a Masters of Business Administration degree from Temple University.

Michael O'Brien

Michael O'Brien - LEED AP BD+C - Vice President

Michael O'Brien's career in the construction industry spans more than 30 years, including experience in the construction of industrial facilities as well as owner/president of an independent contracting firm. Mike is responsible for the development of new business opportunities and the management of the company’s preconstruction services including contract negotiations, project budget development and cost control, procurement, scheduling and logistical planning. Having conducted more than 100 AIA Continuing Education Seminars on sustainable planning, design and construction, Mike has been an active advocate for the adoption of green building practices since 2001. Additionally, Mike is a current Board Member of Green Advantage and the Delaware Valley Green Building Council, where he was also served as President.

Craig Irvine - LEED AP BD+C - Vice President

Craig Irvine has 25 years of experience in the construction industry. Craig holds a Bachelor of Arts in Business Administration Management from Bloomsburg University. Craig is a member of the Delaware Valley Green Building council and is a Green Advantage Certified Professional as well as LEED AP. Mr. Irvine is responsible for overseeing both home office and field operations on all projects in the construction phase including, execution of contracts, project management administration and oversight of jobsite safety and execution.

Michael Boess

Michael Boess - LEED AP BD+C - Chief Estimator

Michael Boess is the Director of the company's Estimating Department and has 30 years of experience in the construction industry having started out in his family's construction business. Mike holds a Bachelor of Science degree in Business Administration from Elizabethtown College and continued his education at Penn State University in Construction Engineering. He has served in various management roles including Estimator, Senior Estimator, Estimating Manager and Project Manager. As Chief Estimator, he leads the preconstruction estimating, value engineering, bidding and buyout efforts.

Erik Fay - PE - Vice President

Erik Fay has 30 years of experience in the construction industry with leadership positions in design, real estate development and commercial construction. Erik holds a Bachelor of Science from the Pennsylvania State University in Civil Engineering and is a registered professional engineer. Erik is a former President of the Board of Directors for Easter Seals Society of Southern Pennsylvania. As Vice President, Erik will be responsible for the development of new business opportunities, strategic planning and will serve as an officer on the W.S. Cumby leadership team.

William Cumby, III Vice President

William Cumby III - Vice President

William (Bill) Cumby, III has over 15 years of experience in the commercial real estate, construction and finance industries. Prior to joining WS Cumby in 2016, he spent 15 years in the finance industry, 7 as a commercial real estate loan underwriter and commercial mortgage backed securities (CMBS) trader for Credit Suisse, and 8 as a portfolio manager for Pacific Investment Management Company (PIMCO). At PIMCO, he had various responsibilities, including advisor to the Federal Reserve Bank of New York from 2009-2010 for their TALF (term asset-backed securities loan facility) program. From 2014-2016 he worked in their alternative investments division, where he focused on commercial real estate private equity and debt and served on their real estate investment committee. Bill holds a BA in economics from Bowdoin College. At W.S. Cumby, Bill is responsible for financial and strategic oversight of the construction management business as well as management of the company’s real estate operations and development efforts.

Michael Bennett - Director of Preconstruction

Michael has over 35 years of experience in the construction industry. As Director of Preconstruction, Michael directs the preconstruction estimating, value engineering, bidding and buyout efforts. His responsibilities include quality control of the company’s preconstruction phase services to meet the client’s objectives with respect to scheduling and logistical planning. An active member of the Associated Builders & Contractors Eastern PA Chapter, Michael formerly served as Chairman. Michael holds a Bachelor's Degree in Environmental Resource Management from Pennsylvania State University.

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