History
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Founded in Philadelphia in 1909 by Messrs. A.D. Irwin and A.O. Leighton, the company’s earliest activities involved the construction of military facilities, initially at Fort Dix and Gettysburg, and soon thereafter throughout ten states, as well as Canada. |
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Through the remainder of the first half of the century, Irwin & Leighton’s work expanded to the private sector and its growth paralleled the changing dynamics of the country. Its accomplishments include landmark industrial, educational and retail facilities throughout the Mid-Atlantic region.In 1956 Messrs. Irwin & Leighton sold the company to their employees. Since then, the firm has maintained a unique ownership structure whereby its stock is held exclusively by key employees, thereby providing meaningful opportunities and motivation for professionals to excel which results in outstanding service to its customers. |
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2009 is Irwin & Leighton’s 100th Anniversary. As part of our celebration, we published a special commemorative book entitled Our First 100 Years. The book highlights a selection of the many pioneering projects Irwin & Leighton is proud to have partnered in since its founding in 1909. Links to PDFs of the various chapters of the book are below. If you would like a copy of Our First 100 Years, please contact us.Irwin & Leighton – Our First One Hundred Years– Foreward and Introduction– Chapter 1: A Great Partnership Begins– Chapter 2: Breaking Ground — 1909-1929– Chapter 3: Perseverance and Responsiveness — 1930-1949– Chapter 4: The Pivotal Years of the First Transition — 1950-1959– Chapter 5: Broadening Expertise and Relationships — 1960-1969– Chapter 6: A Decade of Dynamic Growth — 1970-1979– Chapter 7: Retooling for the Future — 1980-1989– Chapter 8: Cementing and Expanding Relationships — 1990-1999– Chapter 9: Vibrant and Ready for the Future — 2000-2009
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