HISTORY

Seifert Brothers was established in 1948 by brothers George and Frederick “Fritz” Seifert. The company was based in Rockaway and focused on custom carpentry and copper work. Seifert Brothers were responsible for much of the detailed construction on the estates of the North Shore.

Seifert Brothers was changed to Seifert Construction in 1959 by Fritz’s son Frederick, a master craftsman who was well respected and valued in the building industry. It was during this time that the company expanded into all phases of custom carpentry and high-end home building. The company was based in Smithtown and did a majority of its projects in the Hewlett and Brookville areas. In the early 80’s, Seifert Construction established its own custom cabinet and mill shop to better control quality on its projects.

Brothers Fred and John Seifert took over the family business, moved operations to Mattituck on the North Fork, and built a new headquarters and mill shop to keep up with demand for high end custom home building across the North Fork and greater East End. More than two decades later, the brothers still work side by side. People often tell them their partnership is unusual for brothers, let alone business partners. It is something Fred and John are proud of, and something they have started to see in their own sons.

Fred's sons, Cal, Ryan, and Matt Seifert, have each joined the family business after finishing college, continuing a tradition that now spans four generations on the North Fork. All three studied Building Construction: Cal at Virginia Tech, Ryan at Auburn, and Matt at Georgia Tech. Just as Fred and John once worked alongside their own father, Cal, Ryan, and Matt spent summers and school breaks on Seifert job sites long before joining the company full time, including regular lunches with their grandfather at Magic Fountain. Each of them started the same way: a full year in the field working alongside the company's contractors before taking on more responsibility. Cal joined in 2019 and now runs large projects alongside Fred. Ryan joined in 2023 and oversees several of the company's smaller projects. Matt, the newest addition, joined in 2026 and is currently completing his time in the field.