John Casablanca Construction is a high-quality general contractor with over 30 years of experience in building and comprehensive construction management throughout the East End of Long Island. We specialize in high-end residential new construction, renovations, additions, custom millwork, and estate management.
John Casablanca Construction is a premier general contracting firm based in Southampton, NY, proudly serving clients from Montauk to Westhampton. We specialize in building custom homes with precision, integrity, and an unwavering commitment to craftsmanship. What sets us apart is our fully equipped in-house millwork shop, where we create bespoke architectural details and cabinetry, supported by detailed shop drawings and 3D renderings—all handled by our team.
We take pride in thoughtful project execution—prioritizing budget-conscious solutions, value engineering, and proactive problem-solving throughout every phase. In addition, we offer comprehensive property management services to ensure your home remains in excellent condition year-round, especially during the off-season.
Contact us today to discuss your vision and how we can bring it to life.
Call today and setup a free consultation for your new dream project.
At John Casablanca Construction, we take a deliberately different approach. Unlike many in the industry, we intentionally limit the number of projects we take on, ensuring that our president and project managers can provide focused, personalized attention to every client and property. This allows us to deliver an experience defined by courtesy, patience, respect, and transparency. Our clients and their representatives know they will be treated fairly—and that their investment will yield exceptional value.
From the earliest design conversations through the final walkthrough, we foster a collaborative environment where the homeowner, architect, designer, and our build team are fully aligned. This synergy brings confidence and clarity to the process, making construction not just seamless—but enjoyable.
We believe in keeping our clients in control. Through consistent communication and transparent reporting, we make sure you're informed every step of the way. Our team works closely with you to value engineer the project—optimizing design, function, quality, and cost—so your home becomes the best version of itself, delivered efficiently and thoughtfully.
Even after completion, we remain a trusted resource. Our tailored maintenance packages are available to preserve the integrity and beauty of your home—keeping it as immaculate as the day you moved in.
Phone - 631-655-9855
Email - Info.JCContracting@gmail.com
Crafting a custom home is a true collaboration—and success begins with clear, consistent communication. At John Casablanca Construction, we foster an organized, productive environment where property owners, architects, and designers can seamlessly engage with our dedicated construction team. This unified approach ensures that every project progresses efficiently, cost-effectively, and with the highest level of care and craftsmanship.
