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Greenwich New Construction



In Partnership with
Longo Construction Management

We are proud to be a leading construction company based in Greenwich, Conn. Our commitment to teamwork and willingness to go the extra mile sets us apart from the rest. We work closely with our clients to customize the services we provide based on their specific needs and circumstances. Our mission is to provide superior craftsmanship and unparalleled attention to detail. Contact us today to get started on your next construction project.


As Project Managers, customer satisfaction is our number one priority. We personally oversee every aspect of the project, while closely monitoring both the schedule and cost to ensure we deliver within budget on time. We always keep our clients well-informed on progress and deliver a high-quality, successful product.


See your dream home renovations come to life. Our dedicated team invests the time and energy necessary to be well-prepared for any unique requests or special concerns our clients may have.


Our team brings 30+ years of experience and know-how with them on every job. Our attention to detail and receptiveness to the unique needs of each new project far exceeds the competition. We are constantly looking for new exciting opportunities to provide families an opportunity to live in Greenwich.


At Catalyst Construction LLC, in partnership with Longo Management LLC, we believe in adding value to Greenwich by using our custom home building expertise on every project. With our knowledge and experience in the Greenwich real estate market, we are able to guide your project from conception to completion in the most cost efficient and timely manner. We act on behalf of our clients on all aspects of a new project ranging from pre-construction to final inspection.

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"My wife and I had extensive interviews with 11 different contractors to build our dream home.  One of our requirements was to see their previously built homes first hand. Every one of them needed to make phone calls and appointments to view the homes at a later date. Only Tony Longo and his team said no problem let’s go now.  We went to his client homes without appointments and he was greeted at the door like it was his own home. Every owner embraced him as a brother.  That convinced us to hire him immediately.  After he built our home, I now consider him a best friend and brother, so much so that we engraved his name in stone on our dream home."

Sanle Zhang & Yanping Li

Greenwich Construction Testimonials
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