Our History
Setting Standards. Exceeding Expectations Since 1934
1930s – 1940s
In 1934, William Donovan starts a construction business focusing on the coal industry. They developed new methods of constructing coal handling systems to meet the high demand caused by WWII.
1950s – 1970s
The company expands into Public Utility and Industrial Power Plants.
1980s
Bud Greenwald’s company buys Donovan Engineering & Construction Co., Inc., and gives the reigns to Roy Greenwald and Brian Walsh, who move the business to Brookline, New Hampshire.
1990s
Donovan Engineering & Construction Co., Inc., a regional leader in power plant and heavy industrial construction, purchases its first orbital welder. The company develops the Standard Operating Procedures for the biotech industry that have now been adopted by almost every firm in the industry.
2000s
2015
2019
DECCO launches new website!
2020
DECCO Earns ISPE Facility of the Year Award for Facility Integration for Pfizer’s Building E Andover Clinical Manufacturing Facility
2020
DECCO dedicates Craft Training Center “The Tim Barton Center for Craft Excellence” in memory of DECCO partner, Tim Barton, who passed away unexpectedly in June 2020. “The Barton” focuses on the advancement of careers in the trades and construction.
2021
A new Core Value is added. In 2020 our Core Values were put to the test during a pandemic. Our Core Values guided us through some of the most uncertain times in our Country’s history. During this time, it became evident that we would formally adopt a fifth Core Value “Servant Leadership: In Order to Lead, We Must First Serve”.
2021
DECCO celebrates the opening of its new 20,000 sf Corporate Headquarters in Nashua, NH and the expansion of the existing Brookline, NH facility to house DECCOFab and The Tim Barton Center for Craft Excellence Training Center.
2021
DECCO achieves Accredited Quality Contractor credential from Associated Builders & Contractors. Only 229 of the nation’s elite contractors earn this designation.
2022
DECCO serves as Piping Contractor for the 2022 ISPE Facility of the Year for Innovation – CRISPR Therapeutics
2022
DECCO announces new Critical Equipment Handling Services offering professional rigging services of vital equipment.
2022
DECCO earns Great Place to Work Certification. The prestigious award is based entirely on feedback from employee-partners.
