Maine’s Commercial Real Estate Specialists
Find your property
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.
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:
Office
Retail
Industrial
Multi-Family
Land
Investment
Our brokers also specialize in:
- Dental
- Manufacturing
- Medical
- Mixed-Use
- Multi-Units
- Pad Sites
- Redevelopment
- Restaurant
- Special Purpose
- Storage
Expert Guidance From Market Specialists
Find your Maine commercial property.
Latest Company News
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Mid-Year Update : Greater Portland Office Market Survey
We’re seeing meaningful signs of stabilization in the Greater Portland office market. Overall office vacancy improved to 13.11%, down from 14.09% at year-end 2024, while the average asking rate remained essentially flat at $20.32/SF. While the overall market is approaching equilibrium, we’re seeing a divide between the Downtown and Suburban markets. The suburban market has…
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Justin Lamontagne Named President of Portland Rotary
Our Designated Broker/Partner, Justin Lamontagne, CCIM, SIOR has been named President of the Portland Rotary Club for the 2026–2027 Rotary year. Justin has been a member of Portland Rotary since 2011, he officially assumed the role in July and will lead one of Maine’s oldest and most active Rotary clubs. As President, he will guide…
Recent Transactions
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Cordell & Cordell
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Portland
Cordell & Cordell leased 4,088± SF of office space at 24 City Center from JB Brown & Sons. Sam LeGeyt, SIOR and Jim Harnden from The Dunham Group and Kelly Sullivan from Cushman Wakefield brokered the lease.
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Sparkle, LLC
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Falmouth
Sparkle, LLC leased 2,037± SF of retail space at 202 US Route One from Foreside Place, LLC. Jennifer Davies from Compass Commercial Brokers represented the landlord. Bryan Plourde, MAI from The Dunham Group represented the tenant.