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Sea-Dar Construction

580 Harrison Avenue
Suite 4W
Boston, MA 02118
150 W 30th Street
Suite 1300
New York, NY 10001
2957 Falmouth Road
Osterville, MA 02655
(617) 423-0870
Company Profile: 

Sea-Dar is a full service construction management and general contracting firm with offices in Boston and Cape Cod.  With over 20 years in business and over a hundred years of building expertise, Sea-Dar has established a reputation for excellence. Whether it is new construction, conversion, renovation, or restoration, we consistently exceed the demands of all of our clients. 

"Building Trust" is not just a catch-phrase at Sea-Dar; it is at the core of every project we undertake. From the executive office to the project site, our mission is to ensure our client's satisfaction and to earn their loyalty by delivering quality projects on time and on budget. We have built a $25M business by forming positive and trusting relationships with our clients. We place an enormous value on honor and reputation, and we are proud to have developed and maintained a name as a firm that our customers can rely on. We make promises. We keep those promises.


A Hip, High-Style Urban Condo

As Featured In...

High-end pool designs
It’s Memorial Day weekend, which, to us, means two things. A) Summer has (unofficially) begun! and B) the pool is open! Plus, with temps hitting upwards of 80 degrees this weekend, there’s all the more reason to head poolside. We showcase 10 pool designs that make quite a splash! Come on in, the water’s nice! Architecture: Patrick Ahearn Architect; construction by Colonial Reproductions, Inc....
High-end bathroom
Beautiful, “just-for-me” oases designed to soothe, indulge and restore.... A penthouse en suite imagined by CBT Architects channels a spa experience with its custom cabinetry, sleek marble and onyx accents, and stunning urban vistas. CBT Architects Natural and soothing, this handsome bathroom by C.H. Newton Builders has an organic appeal and warmth to rival a sauna. C.H. Newton Builders This...
High-end New England architects and builders
Until spring has sprung for good, it’s nice to have a visual reminder about why we love New England. The following scenes, brought you by Boston's best custom builders, architects and professionals, are the reasons we suffer the rain, snow and storms. These days are coming, we promise! #1: Walk this Way architecture by Patrick Ahearn Architect; construction by Whitla Brothers Builders #2: Who...


seadar_construction Newbury Street chic . . . #jcjarchitecture #manueldesantaren #richardmandelkorn #hauteinthecity #... Oct 17, 2018 10:17 AM
seadar_construction Sea-Dar had to complete the gut renovation of this gorgeous Wellesley home - designed by LDA Arch... Oct 17, 2018 10:17 AM
seadar_construction Nextflix & Chill. . . . #seadar #seadarconstruction #highendconstruction #builder #buildingtrust ... Oct 17, 2018 10:17 AM
seadar_construction "Uncommon Perspective", Southern New England Home Annual Edition 2011-2012 #slcinteriors #hartass... Oct 17, 2018 10:17 AM
seadar_construction Seeing double? . . . #hacinassociates #trentbellphotography #seadar #seadarconstruction #highendc... Oct 17, 2018 10:17 AM
seadar_construction You spin me right ‘round baby right ‘round! #dpfdesign #robkarosis #seadar #seadarconstruction #h... Oct 17, 2018 10:17 AM
seadar_construction The Red Sox are lighting it up in the playoffs! You can check out the superimposed "view" of Fenw... Oct 17, 2018 10:17 AM
seadar_construction We're falling for Fall! Wishing everyone a happy Columbus Day and long weekend. This pretty neigh... Oct 17, 2018 10:17 AM
seadar_construction “Haute in the City” high atop Newbury Street . . #jcjarchitecture #manueldesantaren #richardmande... Oct 17, 2018 10:17 AM
seadar_construction Sweet dreams are made of this. A sophisticated little girls’ bedroom in a Soho Penthouse Duplex, ... Oct 17, 2018 10:17 AM