Your Home, Perfected and Protected
At John Casablanca Construction, we bring over 30 years of craftsmanship and full-service construction management to Long Island’s East End. We specialize in high-end residential renovations, additions, custom millwork, and estate management—executed with precision, transparency, and care.
Broad vision. Careful thought. Hand-crafted design.
As a boutique general contractor based in Southampton, NY, we pride ourselves on delivering every project with care, precision, and integrity. From Montauk to Westhampton, we don’t just build homes — we refine, restore, and elevate them.
What sets us apart:
In-House Millwork & Design
Our full millwork shop produces custom cabinetry, shelving, and architectural details — supported by precise shop drawings and 3D renderings.Selective Project Load
We limit the number of active projects to ensure that every client receives direct attention from our leadership team.Collaborative & Transparent Process
We communicate frequently, provide detailed updates, and offer value-driven solutions to keep you informed every step of the way.Post-Build Care & Estate Management
Long after construction is complete, our maintenance and property management services protect your investment season after season.
Schedule Appointment
Let’s talk about your vision — whether it’s a detailed renovation, a custom millwork feature, or long-term estate management.
Explore Our Blog
Want to learn more about the materials, techniques, and craftsmanship we bring to every project?
Check out our latest blog posts for insights, tips, and inspiration on high-end construction and renovation.
We Build Your Vision
At John Casablanca Construction, we take on fewer projects so our president and project managers can stay closely involved. That focus gives every client personal attention, clear communication, and fair treatment—and ensures your investment delivers exceptional value.
From early design through the final walkthrough, we build as a team: homeowner, architect, designer, and our crew working in lockstep. The result is a process that’s organized, transparent, and—yes—enjoyable.
We keep you in control. With consistent updates and open reporting, you always know where things stand. We value-engineer smartly—balancing design, function, quality, and cost—so your home becomes the best version of itself.
And our work doesn’t end at handoff. Through tailored maintenance and estate management, we protect the integrity and beauty of your home season after season.
Contact Information
Phone - 631-655-9855
Email - Info.JCContracting@gmail.com
Contact us today for a free consultation
We build relationships that last a lifetime.
We believe great homes are built on trust, communication, and respect. From conception to completion — and beyond — we aim to be the partner you can rely on.