Mourning the Loss of Gregory J. Carlson

NAHC’s Board, staff, and members mourn the loss of Gregory J. Carlson, a staunch supporter of housing cooperatives, long-time NAHC Board Member, and a founder and leader of the Registered Cooperative Manager program. Greg passed away peacefully on Wednesday, January 25, 2023.

Greg’s background was in accounting and property management. He managed the large cooperative where he lived for many years, bringing in every possible innovation for energy conservation and efficiency of operation. As a conscientious property manager, he took many classes and held certifications as Advanced RAM (Registered in Apartment Management), HCCP (Housing Credit Certified Professional) NAHP-e (National Affordable Housing Professional), SHCM (Specialist in Housing Credit Management) and nyarm (new york accredited realty manager) He held office as president of the New York chapter of RAM, as well as National Chairman of the national RAM program. He was active in the New York Association of Realty Managers, serving for many years as its president.

When his cooperative joined the Federation of New York Housing cooperatives in the 1980s, Greg participated actively and soon rose to a leadership position. Charlie Rappaport, then president of the Federation, introduced Greg to NAHC where he was soon playing a leadership role and sharing his management expertise to help in the founding of the RCM program.

With CNYC, Greg helped found the Action Committee for Reasonable Real Estate Taxes in 1990 to work for fairness in New York City’s convoluted property tax system, continuing in a leadership role to the end of his days.

Greg was president of the board of NAHC from 2014-2018, Board Chair from 2019-2023, Chair of the Registered Cooperative Manager (RCM) Program from 2009-2017, and RCM Chair Emeritus from 2019-2023.

Greg’s presence, joy, and friendship will be sorely missed by all who knew him. We invite you to comment on this post with your feelings and memories about our dear friend.

If you would like to honor Greg’s memory, please please consider giving a monetary gift to NAHC below.

Coming soon!


  1. This is tragic news – my heart goes out to Greg’s family. I met Greg on several occasions as various NAHC annual meetings and regret not being able to attend these last few years. To all who knew him, he very much will be missed.

  2. This is very sad news, we missed seeing him at the NAHC conference this year in San Diego. Our prayers and thoughts go out to his friends and family. He had such a passion for Cooperatives. Rest in Peace Greg.
    From everyone at Michigan Shores Cooperative, Frankfort MICHIGAN. Shirley Robert, RCM

  3. Greg was a Cooperative champion and a wonderful and sweet guy. I always enjoyed the opportunity to talk and work with him at NAHC. His impact will be felt for generations. I will miss him.

  4. I originally met Greg when I signed up to run for the Baord of Directors in 2000 on a Thursday before the election on Saturday. At first, he said he was not goint to vote for me because of something ( I can remember – but I am keeping it to myself.) After we talked for a few hours and I convinced him I would be a good board member, I ended up getting elected.

    Over the next 20 -23 years, we worked together to make things happen for the NAHC and we became friends.

    Greg called me in November to let me know that he “had a blood clot on the brain.” We talked alot and I had a hard time understanding what he was trying to tell me. We talked right around Christmas, and I actually thought he seemed to be doing better.

    We talked a couple times in January and I was actually starting to understand what he was trying to tell me. Greg called me on Sunday, January 22, 2023 to let me know he was now in the hospital. We then talked on Tuesday evening for about an hour and he told me that he was just told that he had Stage 4 – Brain Cancer.

    Unfortunately, that was the last time I talked with him, as he did pass away on The next day, Wednesday, January 25, 2023.

    I will never forget him, and I know I am going to miss him. I will always smile when I think of him or when someone speaks of him.

    Good Bye Greg – We all love you,


  5. I was lucky enough to really get to know Greg over the past 10 years and spend a fair amount of time with him. He was a great supporter of cooperative housing and the National Association of Housing Cooperatives. His contributions to cooperatives in general were significant and will be tough to replace, but I personally will miss his friendship the most. This will be a tough one to get over…

  6. My heart is heavy to hear of the loss of one our beloved family member he will be greatly missed,his smile was just heart warming and made you feel so welcome.Rest my brother you will be missed greatly.

  7. I met Mr. Carlson at my first RCM class in Phoenix then we shared a desk in my recert RCM class in Florida. He remembered me first and the co-op I worked for, I was impress. Between Mr. Carlson and the Instructor class was never boring.
    RIP sir, condolences to the family

  8. Greg and I got to know each other after I joined the NAHC board in 2018 and we served together on the RCM Board of Governors. He was very passionate about cooperatives and NAHC, and his contributions and leadership will be greatly missed.

  9. I am truly sorry to hear about the passing of Greg Carlson. He was dedicated to constantly improving, advancing cooperative housing and the NAHC. Greg was a great leader with a joyful disposition.

  10. So sorry to hear this news. Greg was a champion of NAHC joining the international cooperative housing movement and becoming a member of Cooperative Housing International. He also maintained a relationship with Canada by attending the Cooperative Housing Federation of Canada’s Annual General Meetings. I’ll always remember how jovial and welcoming he was. May he rest in peace.

  11. Greg was a great supporter of the wider cooperative housing movement and was instrumental in convincing the NAHC board of directors in becoming a member of Cooperative Housing International. Linda Brockway has served on the board of CHI ever since and has brought a wealth of financial knowledge to our international events. CHI is very grateful for Greg’s vision and perseverance.

  12. As staff with NAHC’s sister organization to the north — the Co-operative Housing Federation of Canada — we are deeply saddened to hear the news of Greg’s sudden passing. Greg was an incredibly warm and generous man. He was so wonderfully helpful and hospitable when we attended NAHC conferences. And he was so engaging and eager learn when he visited our annual meetings, including one in Charlottetown PEI when he spoke to over 500 Canadian co-op delegates and when both organizations committed to joining each other as reciprocal members. In all the time I worked with Greg I found him to be an inspiration of passion and professionalism in support of co-op housing and (so important)the wonderful people that make up our movement. Rest in peace, my friend!

  13. It’s never easy to say goodbye to someone we’ve spent much time with. His presence will truly be missed. He had a way of making everyone feel welcome and included, and his kind and caring nature touched the lives of so many.

    While it’s difficult to accept that he is no longer with us, I hope we can take comfort in the memories he shared and his impact on everyone’s life. He will be deeply missed by everyone who knew him, and His legacy will live on through the positive influence they had on others.

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