ABOUT US

THIRD GENERATION
HOME BUILDERS

Seifert Construction is a family owned and operated third generation, full-service construction company serving the East End of Long Island. We specialize in building high end, luxury custom homes, and renovations where only the finest materials and highest quality craftsmanship is accepted. With over 200 completed projects in the last 20+ years, we have built a reputation as one of the premier custom home builders on the East End. We believe your home or business is not just another completed project for our portfolio, but a true representation of your dreams and our passion.

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.

FRED EIFERT

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.

CAL SEIFERT

Project Manager

Cal has been part of the Seifert Construction team for seven years, coordinating the crews, subcontractors, architects, and owners on every project he runs. He especially enjoys watching a project move through every stage, from demolition and excavation all the way to the punch list and handing over the keys to an excited client. Cal's strength lies in communication, with tradespeople, designers, landscape architects, architects, and clients alike, along with the scheduling instincts to stay a step ahead of the decisions that keep a job moving. Outside of work, Cal plays golf and travels to see courses in different parts of the world.

RYAN SEIFERT

Project Manager

Ryan has spent five years coordinating Seifert Construction's crews and subcontractors across multiple North Fork job sites, keeping projects on schedule. He takes real satisfaction in stepping back at the end of a project to look at the finished result. In the office, his focus tends to be bidding, scheduling, and cost analysis, the work that keeps a project on track before it ever becomes visible on site. Outside of work, Ryan spends time on the North Fork, golfing or spending time with friends, especially during the summer.

MATT SEIFERT

Project Manager and Service

Matt joined Seifert Construction in 2026 and has spent his first year coordinating closely with his brothers, father, and uncle to keep each day's tasks on track. He finds the most reward in seeing a project through to the finished result after the time and work that went into it. Matt has built a reputation on the team as a hard worker with a positive attitude, and his problem solving keeps things moving when issues come up during the day or over the course of a project. Outside of work, Matt spends his time playing sports and hanging out with friends.

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Ready to build your dream home or renovation? Let us put our expertise to work for you.