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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 Stairs by #seadar #seadarconstruction #highendconstruction #buildingtrust #design #quality #moder... Jun 29, 2018 8:42 AM
seadar_construction Proud to have built this #Repost @stevenharrisarchitects with @get_repost ・・・ Historic old meets ... Jun 29, 2018 8:42 AM
seadar_construction Help Team Sea-Dar raise funds for cancer research! The Team is hosting a bake sale at our Boston ... Jun 29, 2018 8:42 AM
seadar_construction #Repost @interiordesignmag with @get_repost ・・・ A sculptural ribbon-like staircase is the pièce d... Jun 29, 2018 8:42 AM
seadar_construction What a charmer! This cheery, welcoming front door to a townhouse on NYC’s Upper East Side marked ... Jun 29, 2018 8:42 AM
seadar_construction Jun 29, 2018 8:42 AM
seadar_construction We loved building that stair and working with @stevenharrisarchitects on this great project #Repo... Jun 29, 2018 8:42 AM
seadar_construction She’s a (And she’ll be a beautiful one when we’re done with her!) #seadar #seadarc... Jun 29, 2018 8:42 AM
seadar_construction And if ever there was a month to cozy up in this warm, quiet, third-story home office, it’s Janua... Jun 29, 2018 8:42 AM
seadar_construction "Haute in the City" new editorial piece features a recently-completed home built by #seadar #sead... Jun 29, 2018 8:42 AM