Our Mission

Rosembarg Construction LLC was founded with one mission: to deliver high-quality renovations and custom builds that reflect each client’s unique vision. With decades of hands-on experience, our family-driven business has grown into a trusted name for homeowners, architects, and designers across NYC, Long Island, and the Hamptons.

Who WE SERVE

From luxury residences to retail and commercial spaces, we bring the same attention to detail and commitment to excellence in every project. Whether it’s a full home renovation in Long Island, a custom kitchen remodel in the Hamptons, or a high-end retail build-out in Manhattan, our work speaks for itself.

Our approach

We believe every project should be seamless, transparent, and built to last. That’s why we:

• Provide line-item estimates so you know exactly where your investment goes.

• Design or collaborate closely with architects and designers to bring your vision to life.

• Guide our clients with expertise and innovative strategies to deliver optimal results..

• Stay on-site, managing every detail from demo to final finishes.

• Maintain clear communication throughout the entire process.

Why choose us

• Licensed & Insured: Peace of mind knowing your project is protected.

• Local Expertise: Deep knowledge of building codes, suppliers, and design trends in NYC, Long Island, and the Hamptons.

• Family Values: Built on integrity, reliability, and long-term relationships.

• Proven Track Record: Decades of combined experience delivering residential and commercial projects.

Our Commitment

Your home or business is more than just a project, it’s a reflection of your lifestyle and brand. At Rosembarg Construction, we’re committed to delivering results that exceed expectations, with craftsmanship that stands the test of time.