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About 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, Broker/Realtor®
Serving Your Real Estate Needs Throughout The Greater Seacoast Regions Of Southern New Hampshire & Southeastern Maine

  • New Hampshire (NH): Portsmouth, New Castle, Rye, Newington, Greenland, Stratham, North Hampton, Hampton, Exeter, Newmarket, Durham, Dover, Hampton Falls, Rollinsford, Madbury, Lee, Brentwood, Seabrook, Barrington, Nottingham, Epping, Kensington, East Kingston, Kingston, Somersworth, Rochester.
  • Maine (ME): Kittery, Eliot, South Berwick, York, Berwick, North Berwick, Wells, Ogunquit, Kennebunk, Kennebunkport.
  • Referral: 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.

Broker/Realtor® Licensed in NH and ME
111 Maplewood Avenue, Ste A, Portsmouth, NH 03801
Cell: 603-370-0253 • Office: 603-431-8977 ext. 5707
Email: simpsonrealty@comcast.net
Website: www.msimpsonrealestate.com


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Thanks for all your help in making our "dream home" a reality. We really appreciated that you went the extra mile to get us the best price for our home. You are truly a professional. John and Rhonda Robinson
In all our dealings with Realtors over the past ten years, we have never met anyone as helpful and energetic as you have been. Without hesitation, we would highly recommend your service to anyone who is looking for an experienced Realtor who cares about getting things done and doing them right! Thanks for taking such good care of us, we couldn't have done it without you! Daniel and Barb Northfield
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   REALTORĀ®    Equal Opportunity Housing

  Equal Opportunity Housing

Only real estate professionals who are members of the NATIONAL ASSOCIATION OF REALTORS® may call themselves REALTORS®. All REALTORS® must subscribe to NAR’s strict Code of Ethics, which is based on honesty, professionalism and the protection of the public.

Copyright 2019 New England Real Estate Network, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site comes in part from the IDX Program of NEREN. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. ©2019 Maine Real Estate Information System, Inc. All Rights Reserved. Listing data is derived in whole or in part from the Maine IDX and is for consumers' personal, non-commercial use only. Dimensions are approximate and not guaranteed. All data should be independently verified.

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