Traditional craftsmanship meets state of the art construction.

We take great pride in knowing every single house we build is a true representation of our company. Only the best materials and highest quality craftsmanship go into each Seifert Construction home.  As home builders, we have forged relationships with the finest subcontractors on Long Island and have created a family of craftsmen all focused on the same vision.


Seifert Construction has a long-standing reputation for building high-end luxury homes on the East End of Long Island. We pride ourselves on building the finest coastal homes in the area, by putting decades of home building expertise along with only the best materials available into each and every one of our homes. When you hire Seifert Construction to build your dream home, not only do you get a truly magnificent house you can be proud of but three generations of builders who stand behind our products.



Building on the East End of Long Island we are sensitive to the surrounding architecture and, it is, for this reason, many of our projects are a renovation of smaller, simpler homes. We enjoy the challenge of bringing an older, outdated house back to something spectacular. We work hand in hand with the architect and homeowner to achieve their vision.









In order to achieve the highest level craftsmanship in our homes, we believe it is imperative to control all phases of the carpentry process. For this reason, we have a 2500 sq. ft. state of the art custom mill shop for building anything the architects or clients can dream of. We specialize in complex and unique requests that set your home apart.



Years of experience and dedication to our clients.

Seifert Construction is committed to providing the highest standards of safety, quality, and excellence on every job site. Years of refining our craft has resulted in “The Seifert Way”.


Seifert Construction was built from three generations of carpenters. We are proud of what we do and are passionate about woodworking. We employ full-time in-house carpenters who have trained the “Seifert Way” and believe our custom carpentry is second to none.




Our quality craftsmanship is at the core of everything we do. We were taught “old school” techniques and values from our father and mentor and will never waiver from them. We teach everyone on our team that only the highest quality is acceptable. We believe if you do something right the first time it will last a lifetime.




Whether a job is a new construction or a renovation, we work with many local and national architects as well as designers. Our relationships in the communities we serve run deep. We are proud to call the East End home and deeply value the relationships we have forged through the years.


We provide customized supervision by either Fred or John Seifert on each and every project. You will have peace of mind knowing your project is being supervised by either partner who has decades of knowledge and experience in the residential home construction industry.



We believe our greatest form of advertising is from our customers. It is these customers who make Seifert Construction what it is today. We work hard to earn the praise and accolades our clientele has given us, and continue to strive for excellence in everything we do.



We take an active role in supervising your project and keeping you up to date on all progress, and decisions. We use real-time cloud-based communication software to stay connected to our clients. Giving us the ability to post progress photos from the field or the latest plan revisions from the architect, all in one spot with easy access from your phone, computer or tablet.




A commitment to a seamless process.

  • TEAM

We believe the ultimate success of our projects is large in part to our overall commitment to creating an “All-Star” team of employees, subcontractors, and architects all focused on one objective. Together building the highest quality home possible.


To achieve the objective it is vital to keep open lines of communication between our team and the homeowner. We provide updated, planning and scheduling throughout the course of the project along with cloud-based software that enables homeowners to view progress and updates.

We take an active role in the day-to-day supervision of each project. When you hire Seifert Construction you are guaranteed that either owner Fred or John Seifert will personally be in charge of your project from start to finish. It is this personalized supervision that sets us apart from the competition.


Where your dreams are born.

We are builders – with a facility dedicated to our craftsmanship, where we can create any combination of custom millwork, built-ins and trim work possible. A principal advantage of working with Seifert Construction is the precise detail, customization, and ease that comes from our in-house millwork facility. Seifert Construction’s 2,500 sq. ft. woodshop has highly skilled woodworkers dedicated to the craft of making every type of custom component imaginable.


The heart of our company.

When you choose Seifert Construction to build your project, you get a full-service construction team backed by decades of technical “know-how” and the resources to ensure your project exceeds your expectations. Fred and John became full-time owners of Seifert Construction in 1995 and have since built the company into one of the premium East End custom home builders on Long Island.


Team Fred Seifert


Fred is a part owner of Seifert Construction along with his brother, John. He has been involved in building for as long as he can remember. He started working for his father during school breaks and after graduating college came to work for Seifert construction full time. It was during those early years of being “in the trenches” that he honed his skills and gained him the invaluable experience he uses to this day. Fred takes an active role in the supervising of the day to day activities and his steady personality and calm demeanor provides a strong sense of security for the client throughout the project.

Team John Seifert


John has been part owner with his brother, Fred, for 22 years. He spent his first decade crafting his skills in the field, then progressed to the foreman of the carpentry crews, and has since evolved naturally into a supervisory role within the company. John comes to work with a passion for building that his clients see very quickly. He’s often on the sites of his projects several times per day keeping a close pulse on them with a careful eye. He excels at solving on-site complex details with a can-do attitude and positive outlook that keeps the jobs moving fluently.


Team Caroline


When we say, “Seifert Construction is a family owned and operated business”, we mean it. Caroline, our sister, has been with us since 2000 and is a valuable asset in what we do. Caroline is in charge of our day-to-day office operations and her dedication and loyalty are a key component to our success. She balances our office’s busy demands perfectly and always with a smile.

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Matt is our longest tenured employee for 22 years working solely for our company. He started as an apprentice hired by our father and has worked his way up the ladder to become our head interior trim carpenter. He is our field carpenter who puts together all the complex and detailed trim packages that set our houses apart from the others. His skills, patience, dedication, and loyalty are what make him a valuable asset to the Seifert team.


Photo Nov 15, 2 41 30 PM


Greg has been with our company for over 12 years and his versatility is what makes him such a valuable asset to our team. He is our “utility player” who is able to perform many different phases of carpentry at a high level. His well-rounded carpentry skills along with his “no-nonsense” approach to getting work done are what helps us complete our projects on time. Greg’s loyalty and dedication to Seifert Construction are traits that make him such an important part of our company.

Amando Salguero 2


Amondo has been with our company for over 9 years at which time he started as a framing apprentice and is now one of our lead frame carpenters. He has a deep knowledge of all the complex framing and exterior trim skills and is able to construct even the most difficult of projects. He enjoys the exterior trim portion of the projects and takes great pride in the intricate details unique to a Seifert home. Amondo’s happy demeanor and easygoing personality make him a pleasure to be part of our team.

Rob Shaw


Rob has been with our company for the past four years and has been in the construction industry for over 40 years. Rob runs our mill shop and is responsible for much of the custom woodworking that goes into our client’s homes. His experience and craftsmanship in the woodworking industry enable us to create beautiful pieces for our client’s homes. Rob brings a hardworking “team-first” attitude to the company and is an integral part of what we do.


Cain Perez 1


Cain has been with us for the past 5 years and his hard work and commitment are something to be admired. He has worked his way up from apprentice to a full-time framer on the carpenter staff. He is committed to helping the framing crew complete our projects on time and is an important part of our team.



The 4TH generation of Seifert Construction is already underway. Just like Fred and John did during school breaks, their children are important parts of the team during the summer months. Fred’s boys are active members of the framing crews and John’s girls help “Aunt Caroline” in the office. We are proud of their hard work and value their contributions.