Biography: 2C Design Studio, Inc. is a Somerville-based firm with principals Noel Clarke and Holly Getch Clarke. The firm has worked on many projects, both residential and commercial, in and around Boston.

Biography: 99 Cambridge was a Boston-based architecture and design firm active in the early twenty-first century. The firm ceased operation in 2011.

Biography: Aamodt / Plumb Architects is a Cambridge-based architecture firm founded in 2007 by Mette Aamodt and Andrew Plumb.

Biography: ABB Environmental Services is an extension of the company ABB. The environmental services sector offers solutions and equipment that are environmentally conscious.

Biography: Abbie Gregg, Inc. is an architecture and engineering firm which was founded by Abbie Gregg in 1985. The firm is based in Tempe, Arizona. It was acquired by AM Technical Solutions in 2019.

Biography: Founded in 1971, Abbott-Boyle Photographers specializes in construction photography.

Biography: ABC Sprinkler, Co., Inc. is an Allston, Massachusetts based distributor, installer, and inspector of fire protection systems.

Biography: Aberjona Engineering, Inc. is an American structural engineering company founded in 1979 in Massachusetts.

Biography: Aberthaw Construction Company is an American construction company founded in 1894 that has worked on many projects in Boston and the surrounding area.

Biography: Abraham Woolf & Associates, Inc. was an engineering firm based in Boston, Massachusetts. The firm was active during the middle of the twentieth century.

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Biography: Acentech is an acoustical consultant company that provides insight into acoustics, audiovisuals, information technology, security and vibrations to clients all over the world. The firm was conceived by Bold, Beranek and Newman (BBN) in the 1940s.