Quality. Innovation. Service.


Allied Engineering has merged with Salas O’Brien. This merger brings additional talent and expertise in MEP, structural, and a variety of new in-house services to benefit our valued clients. The Allied Engineering management team will remain unchanged, in keeping with Salas O’Brien’s mission to be “local everywhere, with international resources.” The future is bright, and Allied Engineering and Salas O’Brien are excited for the years to come.  This has been a seamless transition for our clients. We thank you for your continued trust in our services.

Learn more. https://salasobrien.com/insights/allied-engineering-joins-salas-obrien/


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Press Releases and Articles

When I know I’m commissioning a job designed by Allied Engineering I can be confident that the engineering is sound, the documentation is clear and complete, and that they are willing to listen to feedback and collaborate towards the best design for the client’s needs. I consider Allied a top tier engineering firm and wouldn’t hesitate to recommend them to anyone.

Matthew Napolitan, P.E, CCP, BCxP, LEED AP BD+C

Managing Principal, Cx Associates, LLC

For over 15 years Allied Engineering has been our go-to-firm for any mechanical, electrical, and structural engineering design needs for our office renovation projects. We can depend on Allied Engineering for solid design solutions that are well thought out, energy efficient, and practical.

John Fox

NE Regional Planning Manager, Corporate Planning and Construction, Unum

During The Park Danforth’s most recent design of its Arbor Street expansion, Ian McDonald and the team at Allied Engineering brought expert insight and advice regarding the building systems in a way that met our needs and expectations for the living and community spaces that would ultimately become ‘home’ for those who would reside here. 

Denise Vachon

CEO, Park-Danforth

Professional Associations