ABOUT US

Our mission is dedicated to fostering vibrant communities by serving as both a developer and advisor within the multi-family housing sector.

Alongside our expertise in market-rate development, we excel in leveraging government tax incentives and subsidy programs to enhance project opportunities.



Our comprehensive knowledge of New York residential development, from intricate public policy details to niche market prospects, underpins our steadfast dedication to providing exceptional service and expertise to clients in every aspect of our work.

Meet The Team

Service Offerings

With over 40 years of real estate development experience, ADG's team holds a deep understanding of New York's zoning, regulations, tax benefits, and financing structures. This expertise allows us to provide clients with a comprehensive suite of services from the perspective of seasoned owner/developers


Project Management

ADG provides management services during all phases of development; from land and building approvals, through construction, and refinancing.

JV Partnership Management

ADG has decades of experience on the ownership and development side of real estate, collaborating with current landowners and potential investors to develop detailed real estate plans to re-position and/or

re-capitalize commercial assets.

Asset Management

ADG can review and analyze existing portfolios and offer the best strategy to meet your needs, from a partial liquidation to refinancing or development. Our solutions are tailored to your goals.

Green Building Design

ADG’s principal has over 30 years of development experience in New York City, over those years we have utilized innovative technologies to create cutting-edge high-performance buildings. ADG is committed to creating green buildings that are sustainable ecologically and economically.

In The Press.

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By Westfair Business Journal. November 7, 2024
After years of planning and adjustments, the City of Mount Vernon is set to see a major transformation in its downtown area. Manhattan-based Alexander Development Group is moving forward with an ambitious project to build a 21-story mixed-use building at 140 E. Prospect Ave.
By Real Estate Weekly July 31, 2023
42 Broad is a 16-story, energy-efficient luxury high-rise in Mount Vernon’s Fleetwood neighborhood, offering 249 modern residences designed to Passive House standards for sustainable living. Just 30 minutes from Midtown Manhattan, the building features spacious apartments, extensive amenities, and concierge services, providing an upscale living experience comparable to New York City.
By New York YIMBY July 19, 2023
Alexander Development Group and The Bluestone Organization have just completed one of the world’s largest Passive House multifamily rental properties at 42 West Broad Street in Mount Vernon, New York. Known simply as 42 Broad
By Edwin Warfield | citybiz July 13, 2023
Mark Alexander is a seasoned real estate professional with over 30 years of experience in building attractive and thriving residential and mixed-use communities. Mr. Alexander has developed 3,000 units of housing, 75,000 square feet of neighborhood retail and office space, and numerous gardens and public art installations with a cumulative value of $500 Million Dollars. He is a founding member of Alexander Development Group. Prior to forming Alexander Development Group, Mr. Alexander was a founding member and President of Urban Builders Collaborative LLC (UBC) where he created a development pipeline of 550 apartments and 30,000 square feet of retail and community facility space. Mr. Alexander started his career at Hope Community, Inc. (Hope) in Harlem, where he forged it into a leading not-for-profit community-based developer, with almost 100 staff members, a diverse real estate portfolio, and highly regarded social programs. Mr. Alexander serves on the board of directors of several civic organizations including CIVITAS. He is a past President of ANHD and board member of The New York Housing Conference and Citizens Housing and Planning Council. He has received several honors, including the Citizens Housing and Planning Council’s Community Service Award and Boys and Girls Harbor Salute to Achievement Award. He received his undergraduate degree from New York University and is a graduate of the Not-for-Profit Executive Management Program at Columbia University.
By Real Estate Weekly May 3, 2023
Mount Vernon Mayor Shawyn Patterson-Howard, ArtsWestchester, and the family of hip-hop artist Heavy D joined the development team behind 42 Broad to unveil "Peaceful Journey," a public art installation by Brooklyn-based artist Eto Otitigbe.
By globest.com June 25, 2017
In total, the four new developments total approximately $323 million in investment and will add 880 new housing units. All four of the projects have either been approved by the city or are in the approval process and could break ground within a year.

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