Tumen is a New York–based renovation firm specializing in high-end residential and commercial projects. For over 15 years, we’ve partnered with designers, architects, and discerning clients to deliver construction defined by precision, transparency, and craftsmanship that endures.
Tumen is a collective of builders, project managers, and craftsmen dedicated to executing New York City’s most design-driven renovations. Founded on the principles of integrity, precision, and partnership, we work alongside architects and interior designers to transform complex ideas into flawless, functional spaces.
Our reputation was built through word of mouth—earned by exceeding expectations, not by cutting corners. Every project is approached with care, structure, and attention to detail that ensures design intent is preserved from concept to completion.
Tumen isn’t just a contractor—we’re a trusted execution partner for New York’s leading designers, architects, and discerning homeowners. Our work is defined by precision, honesty, and craftsmanship that endures long after completion.
We protect the designer’s vision through disciplined construction, meticulous detailing, and a commitment to architectural alignment.
From estimating to execution, we communicate clearly and consistently—no hidden costs, no surprises.
Every finish and fixture is built with care, ensuring beauty and function that stand the test of time.
Bring your next project to life with a construction partner who values design as much as you do. Tumen delivers precision, communication, and craftsmanship—built to exceed expectations every time.
Tumen began with a simple goal: to raise the standard of construction in New York City. Founded by Aaron Choi, the company was built on trust, craftsmanship, and a belief that great design deserves equally great execution. Over the last 15 years, that philosophy has shaped every brownstone, apartment, and commercial space we’ve brought to life.
What started as a small, referral-based operation has grown into a trusted partner for some of the city’s leading architects and interior designers. Our success isn’t measured in volume—it’s measured in relationships, built one project at a time through honesty, consistency, and results that last.
Behind every Tumen project is a team of builders, project managers, and craftsmen who take pride in doing things the right way. Our people are detail-obsessed, design-conscious, and deeply committed to the art of execution.
At Tumen, our role goes beyond construction—we’re here to make your design goals achievable, efficient, and enduring. Through collaboration, transparency, and craftsmanship, we turn complex ideas into seamless results that elevate every space.
“Aaron and team are great. They remodelled both of our bathrooms. Everyone who worked on our projects went above and beyond from communications to problem solving to staying within budget. The team of Mr Wu, Tommy, and Jason worked tirelessly. And they cleaned up after each work day! They were all very professional and courteous. I highly recommend Tumen and would definitely use them for our future projects.”
John B.
“Tumen Inc. were recommended to us by a friend after they remodeled his kitchen. We have two small bathrooms in our Bronx apartment that were both in rough shape. Tumen’s head-honcho Aaron came by our apartment with one of his contractors and they looked the situation over. Within a few days we were given a very reasonable estimate, and decided to engage them for the job. We have been very glad we did so ever since.”
Ben J.
“I cannot recommend Aaron Choi of Tumen Inc highly enough for the exceptional work he did in building my surgical office. Throughout the entirety of the job, his communication was outstanding. He was always available for my questions and concerns. He kept me informed at every step of the process, ensuring I felt involved and confident in the project. He even met me at the space after hours or on weekends when I had a concern that couldn’t wait.”
Ellie R.
“Thank you Aaron and team for such reliable and amazing work. They did a full gut and remodel of our basement in 2021. They stayed on budget and everything turned out great. We recently called for a bunch of smaller jobs we needed done inside the house. They came over Saturday looked at what we needed, gave the estimate on Sunday and he was able to squeeze us in the following week. The Job was wrapped up in less than 2 weeks.”
Lauren
Ready to start your next project? Schedule a consultation with Tumen to discuss your vision and see how our team can bring it to life with precision, transparency, and lasting craftsmanship.
