Family owned business operating in Massachusetts and Southern Maine
Seal Harbor Companies is recognized for building fine homes while providing attentive customer service throughout New England. We integrate details, passion, quality, excellence, distinction and comfortable living into every home we build. Our goal is to continue to set the benchmark for excellence through meticulous supervision and efficient management with a balance of innovative design, state-of-the-art technologies and unsurpassed craftsmanship. With over 30 years of residential design, construction and client management experience, the team at Seal Harbor brings together all of the elements necessary to service our customers with the highest level of craftsmanship available.

Founders

Mark Gallagher
Founder and Senior Manager
Mark has been developing land and constructing homes in New England since 1982. A graduate from Suffolk University, Mark first began in this industry by designing his own home shortly before being married in 1981. After overseeing the construction of his new home, he began developing land and constructing homes in the Acton, Concord and Lexington area. Throughout the next 25 years, he has continued to build homes in these areas as well as Littleton, Maynard, Carlisle and Westford, Massachusetts.
In the mid-80s, the business expanded to include construction in New Hampshire and Maine. His experience allowed him to expand the business into design/build as well as commercial construction such as office buildings and small resorts.
In the 90s, he evolved his construction business to focus solely on commercial construction, including the design and installation of fire suppression systems and construction in larger commercial buildings. Major customers included Irving Oil, AT&T, Exxon Mobil and the United States Government.
Since 2001, his company focused on residential development in both Massachusetts and Maine.
Mark P. Gallagher
Vice President and Manager
Mark has been involved in the development and construction business since his graduation from college in 2006. Mark attended Bryant College in Smithfield, Rhode Island and graduated with a degree in accounting and a minor in law. Mark is married and has two wonderful growing children. Mark manages our offices in Massachusetts and also manages the daily scheduling and all of the permitting required to run our business.
Kayla Gallagher
Architect
Kay graduated from Wentworth University in Boston in 2017 with a degree in Interior Architecture. Kay works in customer management and is also responsible for the design of the floor plan changes and construction elements of our single family homes. Kay works closely with our customers providing renderings and guidance through their selection process. Kay also manages our Design Center in Massachusetts.
Patrice M. Gallagher
General Manager
Patrice is a graduate from Saint Anselm College in Manchester, NH and manages our business office. She ensures our business including cash management and purchasing of our goods flows freely so our construction schedule moves forward on any given day.
Seal Harbor Services
Throughout the years, Seal Harbor has offered the following services:
Restoration and remodeling – Restored several “period” homes from as early as 1735 through the late 1800s
Development – Purchased land and planned developments from permitting and consulting through road construction
New homes – Designed and built new homes from 400 square feet to over 10,000 square feet
Commercial development – Construction of hotel units and cottages as well as commercial buildings
After care – Care of your home or investment after the sale
The following are Seal Harbor development projects by State. These developments consist of 1 to 250 homes within the property.
Massachusetts
Anthem Villages, Acton
Arrowhead Farms, Concord
Ayshire Road, Concord
Bennett Orchards, Littleton
Channing Road, Concord
Crane’s Crossing, Ayer
Evergreen Road, Acton
Freedom Farm, Acton
Hawks Crest Reserve, Acton
Lady Slipper Lane, Acton
Larch Road, Acton
Macmillan Drive, Concord
Mattison Drive, Concord
Mocking Bird Lane, Maynard
Old Marlborough Road, Maynard
Pine Meadows, Maynard
Pine Ridge Meadows, Acton
Stoneymead Farm, Acton
Strawberry Hill Road, Acton
Sutton Place, Acton
Wampanoag Drive, Acton
Wildflower Meadows, Littleton
Maine
Atlantic House, Wells
Barefoot Cottage Homes, Wells
Beach Dreams, Post Road Wells
Compass Pointe Club, Wells
Four Seasons Farm, Wells
The Heights, Ogunquit
Holiday House, Moody
The Homes at 293 Main Street Ogunquit
Ocean Mist Village, Wells
Oqunquit House
Perry Oliver Road, Wells
Red Coat Lane, Wells
Sea Oaks, Ogunquit
Tatnic Road, Wells
Topsail Homes, Wells
Topsail Way, Wells
Seal Harbor Condominiums and Homes, Wells