Founded by Joseph A. Langone and Richard W. Stuart in 1979, Northeastern Development Corporation has been a prominent and respected developer in the local building industry for almost 40 years. Starting out by purchasing one plot of land upon which to build one home, NDC has grown successfully to diversify by constructing large residential developments and commercial buildings throughout the local area.

Integrity, Innovation and Commitment are the three hallmarks that have continued to distinguish and define NDC as a truly effective and credible developer in the northeast. Our mission is to continue to build and maintain spaces with superior service and craftsmanship that will enhance our customers and community’s quality of life for years to come.



Elm Tree Development LLC was established in 2009 to unite two prominent builders in the Wilmington area, Northeastern Development Corporation and Triton Construction Management Inc. Collectively, the two partners have developed hundreds of homes and dozens of subdivisions in Wilmington and surrounding communities over the past 4 decades.

It was a natural fit for these two companies as they share a mutual approach to construction – building quality homes and neighborhoods that stand the test of time. Elm Tree homes incorporate updated floor plans for today’s lifestyle, and options to personalize each home to the homeowners needs. A true blend of established and proven building practices with current technology and innovation applied to create low maintenance living, a smaller carbon footprint and energy efficiencies that will reward new homeowners for years to come.

Backed by some of the best names in the industry, Elm Tree Development LLC is a builder you can rely on to deliver a home you can be proud of!

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