Visiting Friday, February 6, 2026 from 3 – 8 PM at Scarpaci Funeral Home, 1401 86th St, Brooklyn, NY 11228
Mass of Christian Burial Saturday, February 7, 2026 at 9:30 AM at Sacred Hearts – St. Stephen Church, 125 Summit Street, Brooklyn, NY 11231
Burial to follow at Green Wood Cemetery, 500 25th Street, Brooklyn, NY 11232
For more information please call Scotto Funeral Home at 718-875-2515
Giacomo “Jack” DiCostanzo passed away on January 30, 2026. Challenge after challenge, he kept fighting pancreatic cancer the past couple of years.
He’d pass the finish line, then a setback here, then pass the finish line again, and another setback here and there. He did what he could to beat it, no matter the intensity, and did it with a smile, and no complaints.
Throughout his illness Jack showed remarkable resilience, enduring surgery, chemotherapy & radiation while remaining positive and never giving up.
He was born October 20, 1945, to Maria Assunta and “Rocco” DiCostanzo. A U.S. Army veteran, Jack was the first person in his family to graduate from college and went on to become an architect. He worked for HUD and had a great set of comrades for 30+ years. As a side hustle, he worked on various projects, including church design. Jack was also a devoted parishioner of St. Mary Mother of Jesus Church for 40+ years.
Jack is survived by his wife, Nancy; his daughter, Maria; his son, John; his sister, Madeline; his sister‑in‑law Anna; nieces Carolyn, Lisa, and their families; and numerous nieces, nephews and their families (Conroy, DiMeglio, Ferrara, Randazzo) and many neighbors who became family.
He was preceded in death by his parents, his brother Dominick; his brother‑in‑law Bobby, nephew‑in‑law Chris, and many others from the four families mentioned earlier.
Jack supported his children’s dreams and encouraged them to “just go for it.” He often said that his wife Nancy was both the best “nurse” and “life support” that gave the medical biz a run for its money. A lifelong fan of the New York Yankees and a proud Brooklynite, he also loved the music of Neil Diamond, and wanted to make it to FL one more time.
Jack was baptized, confirmed and served as an altar boy with his brother at Sacred Hearts & Stephen Catholic Church, during Monsignor DelVecchio’s tenure, when the mass was served in Latin.
Very sorry for your loss. Jack was a great man, someone our whole family admired. Wish I had gotten to see him one more time. May his memory be a blessing to all of us.
God bless the DiCostanzo family. May Giacomo rest in peace.
Rest easy Uncle Jack,you put up a good fight against cancer.Thanks for always being humble and a good husband to Aunt Nancy and loving Dad to Maria&John.
Our beloved Uncle Jack was a gentle man and a gentle soul. He was an accomplished architect, skilled in his field, and dedicated to his work. He was very proud of his Italian heritage and a person deeply committed to his Roman Catholic Faith. But more than anything he loved his wife Nancy and children John Sebastian and Maria Lucia. Family was first and foremost everything to him. He endured his cancer illness with great resolve, courage, and dignity, never allowing it to change him. His suffering is finally over. We pray that he rest in peace. He will be deeply missed.
I am unable to put down just One memory of my Uncle. Uncle Jack was more than just one memory. Throughout his life he live up to his high standards and had a wonderful sense of integrity. He was a good man. He always tried his best. He loved his family.
Our deepest condolences to the DiCostanzo family. Wishing you strength and comfort during this challenging time.
A donation was made on behalf of Uncle Jack to the Lustgarten Pancreatic Cancer Foundation. Our deepest & sincere condolences. May he Rest in Peace now after his courageous battle….
Fly High With The Angel’s.
God’s Blessing’s Jack! 🙏 ❤️
In Loving Memory.
Nancy, John and Maria I hope you find Peace and family. 🙏 ❤️
Such a kind, considerate, and genuine person. Thank you for 30 years of friendship, good memories, and fun times with our families. I miss you already!
You have earned your eternal reward in heaven. Rest in peace dear friend. 🙏
Nancy, John and Maria, so sorry for your loss. Jack was a beautiful human being. Jack and I always talked about family and our love for baseball. Going to miss him dearly. May his memory be a blessing. Expressing our deepest condolences to the DiCostanzo Family. Don and Roberta Matzner, Scott Matzner and family and Bruce Matzner and family.
Sleep In Peace my friend. Jack always stayed in touch. What a great guy!!!!
As the Regional Administrator of HUD, I had the privilege of working with Jack. We were the only 2 licensed Architects in HUD.
He was an outstanding individual, talented, dedicated, and loved by his fellow workers. Always a smile and easy to work with. A CLASS ACT. I had the pleasure of connecting with Jack after I retired from HUD in 1988. We were email buddies and an occasional phone chat. May he rest in peace and help those colleagues in heaven to keep on building. God bless Nancy and his loving family.
A beloved friend from back in our days at CCNY, Jack always stayed in touch with friends and his profession, and was glad to speak with him by phone a couple of weeks ago. We will always remember Jack’s sincere friendship. May He Rest In Peace!
My dearest John, Nancy and Maria. I really can’t find the right words to express my sadness regarding Jack’s passing. Jack was a wonderful gentleman, husband and dad. If you need anything, please let me know. I will light a candle for him at church and for all of you as well. God bless all of you. ✝️ 🕯🕊
Rest in Peace Giacomo Jack. No longer pain. Memories of our past, bring flowing tears. Will always remember your smile. Our Deepest Sympathy to DiCostanzo family.
Beverly DiCovello and Mike DiMeglio
Jack was a wonderful person. He never hesitated to help a fellow coworker in need. I knew Jack for twenty years at HUD and he assisted me in some of my cases with his expertise in accessibility guidelines. Giacomo was one of the good guys. His family was the center of his universe. Nancy, John, and Maria, I’m so sorry for your loss. May he rest in peace now free of the burden of pain.