The Dunham Group

2026 Greater Portland Office Market Survey Now Available!

Our Mid-Year Update shows:
• Overall vacancy improved to 13.11%
• Average asking rates held steady at $20.32/SF
• The suburban market posted approximately 168,000 SF of positive net absorption
• Downtown continues to face challenges, particularly in Class B office
• Owner-users remain the primary drivers of office sales

We believe the market is beginning to find its footing, with continued opportunities for both tenants and owner-users.

Read our full Mid-Year Office Market Update for more insights and our outlook for the remainder of 2026.

Mid-Year Update : Greater Portland Office Market Survey - The Dunham Group 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

Our 2026 Mid-Year Review of Southern Maine's Industrial Market is now available!

While industrial vacancy has increased to 4.77%, the market remains healthy and is transitioning to a more balanced environment after years of historically low vacancy. Our report also highlights continued strength in the industrial sales market despite softer leasing activity.

Read the full report by Justin Lamontagne on our website ⬇️

Southern Maine Industrial Market : 2026 Mid-Year Review - The Dunham Group We are pleased to release our 2026 Southern Maine Industrial Market Mid-Year Review, offering a look at current trends shaping Maine's industrial real

📢 Welcome Greg!

The Dunham Group is excited to welcome Greg Perry to our brokerage team! With more than 20 years of commercial real estate experience across Maine, Greg brings an exceptional track record representing tenants, landlords, buyers, and sellers. His extensive industry knowledge, construction management background, and reputation for integrity make him an outstanding addition to our firm.

Greg's background includes 16 years as a partner at Cardente Real Estate, followed by serving as President of Broad Cove Collective, along with numerous professional accomplishments—including being named Maine Commercial Realtor of the Year and one of the Top 25 Commercial Realtors in the Country in 2016.

Please join us in welcoming Greg to The Dunham Group!

We’re proud to see Bryan Plourde featured in this guest column for Mainebiz, offering thoughtful insight into how artificial intelligence is shaping Maine’s commercial real estate landscape.

AI is quickly becoming an integral part of the CRE toolkit—streamlining data analysis, elevating marketing strategies, and supporting more informed decision-making. As Bryan points out, however, technology doesn’t replace what matters most. Strong relationships, deep local knowledge, and human connection remain at the center of every successful transaction.

What AI could mean for Maine's commercial real estate industry The rise of AI in commercial real estate is already here, in the form of lease abstractions, comp searches, financial modeling and market reports, our guest author writes.

A milestone transaction for Maine’s commercial real estate market.

$23.5M office sale at 33 Sewall Street in Portland has officially become the largest office transaction in the state so far this year.

The Dunham Group is proud to have brokered this transaction, representing a successful outcome for all parties involved.

We continue to see strong demand for well-positioned office assets across Maine, reinforcing confidence in the region’s market.

👉 Read more: https://mainebiz.biz/article/23-5m-deal-tops-maine-office-building-sales-to-date/

$23.5M deal tops Maine office building sales to date The property was never formally marketed. A targeted outreach process to a select group of six qualified medical real estate investment trusts resulted in competitive interest.