Welcome to Colby Co., an Architecture and Engineering firm. Sixty-five employees strong, we provide building designs and facilities engineering throughout New England from our Portland office.

Our story

Sarah Emily Colby, CEO
Calen Colby, P.E., President

A Maine-based business with Registered Architects and Professional Engineers in the electrical, mechanical, fire protection, structural and civil fields.

Our disciplines

Brian Beaulieu, P.E., Vice President
Ben Townsend, P.E., Vice President

Named one of the Best Places to Work in Maine
6 Years in a Row
2018 to 2023

Founded in

Starting employees:

Employees today:

Join our team!

unique projects since 2008

New Buildings

Historic Renovations

Facilities Engineering

Sustainable Design

Master Planning

Construction Management

View our projects
young girl raising her arm

Colby Co. kids:
45 ...and counting

Ready to meet the rascals that keep our office... interesting?

Office dogs:
10...and counting

in contracts brought to Maine
over the last 15 years

See how

volunteer hours paid out
Learn more

Local businesses supported
Our community

customs house building

Professional registrations

40 U.S. states and five Canadian provinces


years of combined experience in our office

We’ve completed more than 2,500 projects.

And we’ve learned something valuable from every one of them.