Maine’s Commercial Real Estate Specialists

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Put Our Collaborative Approach to Work For You

For over 45 years, The Dunham Group has provided in-depth market knowledge and trustworthy representation to our clients. Our objective is to help our clients realize their vision and this commitment has helped us build long-term, loyal partnerships. We like to get to know our clients the way we know Maine’s commercial market properties – which means we listen, we pay attention, and we do our research. With our insightful data analysis, local expertise, and collaborative approach we connect our clients with the right opportunities for their growth.

Watch: The Dunham Group | Maine Commercial Real Estate

On working with Justin: “Once we got there and saw the space, he had done his research. He had tons of data and facts. I was blown away. Immediately we could have a pretty informed decision that this was worth pursuing or not.”

— Tom Ruff, Orange Bike Brewing Company

Featured Commercial Properties

Our Team of Brokers

Our brokers work together as a team so our clients can benefit from their combined resources and knowledge. While we have a record of success that includes brokering many of Maine’s most recognizable commercial properties, what truly drives us is the relationships that we build with clients in the process.

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The Dunham Group commercial real estate brokers have proven industry expertise with a focus on:







Our brokers also specialize in:

  • Dental
  • Manufacturing
  • Medical
  • Mixed-Use
  • Multi-Units
  • Pad Sites
  • Redevelopment
  • Restaurant
  • Special Purpose
  • Storage
Brokers: Bryan Plourde, Justin Lamontagne, and Sylas Hatch in discussion.

Expert Guidance From Market Specialists

Find your Maine commercial property.

Latest Company News

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  • Southern Maine Industrial & Office Market Mid-Year Review

    We are pleased to share our 2024 Southern Maine Industrial & Office Market Mid-Year Review. This report is powered by the in-depth market knowledge of our team of brokers and their comprehensive internal…

  • The Next Generation of Leadership

    Known for their expertise, strong work ethics, and loyal client relationships, TC Haffenreffer, Sam LeGeyt, and Sylas Hatch are the newest Partners at The Dunham Group. Creative and collaborative in…

Recent Transactions

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  • United Way, Inc.


    United Way, Inc. recently leased 250± SF of office space at The Sanborn Building, 550 Forest Avenue from Crossways Park, LLC. Tom Moulton, CCIM, SIOR, Katie Breggia and Justin Lamontagne,…

  • Portland Trust Company, LLC


    Portland Trust Company, LLC recently leased 2,964± SF of office space at 2 Monument Square from 800 Northern Corp. Tom Moulton, CCIM, SIOR and Katie Breggia from The Dunham Group…