Mark Simpson

Portrait photo of Mark Simpson

Realtor® | Associate Broker

Licensed in New Hampshire & Maine

26 Congress Street, Portsmouth, NH 03801

Cell: 603-370-0253 text me





In today's sophisticated real estate market, choosing a realtor is a very important decision, given the complex issues surrounding real estate transactions and the unexpected challenges that could adversely affect the finality of a contract. Since real estate agents generally function as independent contractors within an agency, the professionalism, integrity, knowledge and level of service one would likely expect depends primarily on the ability of the individual agent, not the agency. For an in-depth overview of my expertise and broad real estate related experience please refer to my profile below.


  • Licensed in New Hampshire & Maine
  • Serving the Greater Seacoast Regions of Southern New Hampshire & Southeastern Maine
  • Representing both Buyers & Sellers
  • Residential & Commercial Sales
  • Luxury & Waterfront Properties
  • Condominiums
  • New Construction
  • Land & Development
  • Residential & Commercial Leasing


  • Over thirty-five years of real estate related experience
  • Lifetime resident of the seacoast region
  • Active member of the local business community for over thirty-five years
  • Extensive business experience encompassing management, contract negotiation, investment services, sales, marketing, advertising, lending & finance
  • Served in various Banking senior Level capacities including: Corporate Director, President & Chief Operating Officer, Executive Vice President, Vice President & Treasurer, Vice President of Shareholder Services and Assistant Vice President


  • Served as a Member and President of The Woodlands Homeowner's Association for 8+ years
  • Investment Advisor and Administrator for The Society for the Care of the South Cemetery since 1982
  • Member of the Seacoast Board of Realtors since 1998
  • Served as a Member of the Seacoast Board of Realtors Finance Committee for 5+ years
  • Member of the New Hampshire Association of Realtors since 1998
  • Member of the National Association of Realtors since 1998
  • Member of the New Hampshire Multiple Listing Service (MLS) since 1998
  • Member of the Maine Multiple Listing Service (MLS) since 2000
  • Served as a Member and Chairman of the Portsmouth Economic Development Commission for 6+ years
  • Served as a Member of the Seacoast Rotary Club for 10+ years

MARK SIMPSON, Realtor® / Assoc. Broker

Serving Your Real Estate Needs Throughout The Greater Seacoast Regions Of Southern New Hampshire & Southeastern Maine

  • Referral Assistance: I'd be happy to assist you with locating a real estate professional proficient in any areas of the country that may be located beyond the scope of my coverage.

Ask Mark Simpson


Great communication and insight was provided by Mark.

- Stanley C

Mark is amazing! He made the whole process of buying a house in a different state so easy, eased our stress! He works with great integrity from how he dealt with us! We will definitely call Mark again for buying another home or selling ours!

- Grace S

He was excellent with every detail

- Claudia Y

Mark was great to work with. He took pride in assisting us and was there for us whenever we needed anything.

- Nicholas Y

Mark was recommended by our lawyer, Jack McGee. From the moment we met Mark and Kelly, we found them to be very nice, honest, and helpful. We felt very comfortable with them and felt that they would work hard to get us the best price for our house as they could. We live in Massachusetts and the house we were selling is in Portsmouth, N.H. so I made a lot of calls to Mark with questions that I had, and he always answered when I called and always either had the answer right then or would find the answer and get right back to me. We felt that we could trust him, as he was always respectful of us and of the house that he knew held a lot of memories for me. We would recommend Mark very highly, and we appreciate everything he did for us. Sincerely, Sharon and Don Foss w

- Trustee S

Property Specialties

55+ Communities, Bank Owned, Commercial, Fine Homes, Golf Communities, Historical Homes, Investment Properties, Multi-Family, New Construction, Short Sales, Waterfront Homes