Jim Harnden

Partner | Broker


“It’s all about relationships. Clients can rely on me as a local expert and know that I’m acting in their best interest to get them the best deal. My motto is, ‘Deliver more than clients expect.’”

Jim’s reputation as a local expert and trusted advisor has helped countless businesses navigate Maine’s commercial real market successfully. With over 35 years of experience, Jim focuses on tenant representation in both the office and industrial markets. Working with large national, regional, and local companies, he builds lasting relationships with clients so he can negotiate the best deal on their behalf. He frequently collaborates with Sam LeGeyt, a partnership going back to when Sam started his career with Jim at Harnden Commercial Brokers. Known for his in-depth market analysis and commitment to his clients, Jim’s proficiency also extends to working with investors as they expand and manage their real estate portfolios.

“Jim has a breadth of industry knowledge which is combined with a remarkable rolodex of clients. He embodies all the qualities that we are looking for in a broker: integrity, intelligence, a tireless work ethic, and a commitment to building relationships and community.” – Justin Lamontagne

Most recently, Jim was President of Harnden Commercial Brokers, a firm he founded in 2014. Active in the Portland community, Jim is a member of MEREDA, MCAR, and is a past president of the Greater Portland Regional Chamber of Commerce, as well as a past president of the Portland Downtown District.

Jim lives in Yarmouth with his wife, Nicola Manganello, and has two grown daughters – Katie and Maeve. He enjoys golfing, skiing, and getting together with family and friends.

Notable Transactions


  • Cuddledown | 70 Quarry Road, Portland | 90,400 SF
  • Consolidated Communications | 5 Davis Farm Road, Portland | 80,683 SF
  • Sun Life Financial | Portland Foreside | 76,785 SF
  • IDEXX Laboratories | 6 Ashely Drive, Westbrook | 56,186 SF
  • IDEXX Laboratories | One Thomas Drive | 55,000 SF
  • AMEC Foster Wheeler | 511 Congress Street, Portland | 41,470 SF
  • Stantec | 482 Payne Road, Scarborough | 38,784 SF
  • Sappi | 2211 Congress Street, Portland | 37,575 SF


  • RiverPlace, South Portland | 136-unit Apartment Complex | $33,250,000
  • 300 Southborough Drive, South Portland | 115,926 SF Office building & Two development lots | $17,000,000
  • 44, 45 & 57 Exchange Street, Portland | 58,547 SF Office/Retail | $13,450,000
  • One Cole Haan Drive, Yarmouth | 84,135 SF Office Building | $12,700,000
  • 400, 500 & 600 Southborough Drive, South Portland | 106,000 SF Office Park | $11,000,000