McGrath Builders has a long history of building fine custom homes, renovations, and additions through the Hamptons and Shelter Island.

Knowledgeable, experienced, and skilled, we meld the best traditional construction techniques with the most recent technical and material advancements to yield homes that are solid and efficient, as well as beautiful.  This, combined with fervent attention and communication with both clients and architect as partners in construction, enables you to feel confident with us and to fully enjoy the construction process in all its transitions.  Call us, and let us review your project.


Brian J McGrath Building and Contracting was established in 1979, built on a foundation of craftsman born generations before.  Brian and son Matt McGrath continue this legacy and thrive in the excitement of construction.  With today’s complicated projects, there are thousands of components, overlapping trades, and hundreds of decisions necessary to coordinate and correlate to function.  Our experience and insight makes us ideal to oversee this.  The ability and aptitude to get it done expertly and efficiently is there, as well as to create novel solution and pleasing details when called for.  We contribute as well as facilitate, building friendships as well as homes.  We are always there to assist with all your needs, years after your project is complete.