David Mandel

David Mandel, of Ambler, Pennsylvania, died on 12 October 2026 at the age of 74. His family wrote that he had faced numerous major health challenges over the previous six years and met each with courage and quiet resolve, never complaining. No specific cause of death was made public. A funeral service was held on Thursday 15 October 2026 at Joseph Levine and Sons Memorial Chapel in Trevose, Pennsylvania, followed by interment at Roosevelt Memorial Park. He was survived by his wife of 52 years, Barbara, his brother, Ken, his sons Jason, Marc and Matthew, and four grandchildren. His death was reported by The Legal Intelligencer on 23 October 2026, and his firm marked his attorney profile In Memoriam. The family suggested donations to the Juvenile Diabetes Research Foundation, now Breakthrough T1D.

David Samuel Mandel was born in Philadelphia on 26 May 1952, the son of Richard and Bertha Mandel, and was raised in Havertown, Pennsylvania. He attended Villanova University, where he earned a bachelor's degree in economics cum laude in 1974, and went on to Villanova University School of Law, receiving his J.D. in 1977. Villanova's economics department gave him its Adam Smith Award.

While he was in law school he was diagnosed with type 1 diabetes, the first of many health challenges in his life. With determination and the support of his wife, Barbara, he completed his law degree without delay.

Mandel was admitted to the Pennsylvania bar in 1977 and began his career as an associate attorney at Adelman and Lavine. In 1979 he joined the Philadelphia firm Astor Weiss, where he would build a career in real estate and corporate law spanning 47 years. The firm eventually became Astor Weiss Kaplan and Mandel, and for the last 23 years of his life he was its managing partner, as well as chairman of its Real Estate and Business Law Group.

His real estate practice included representing landlords and tenants in shopping center lease negotiations, handling the sale, acquisition and financing of commercial and industrial property such as free standing buildings, pad sites and shopping centers, forming residential and commercial condominiums, and preparing syndications for commercial real estate projects. On the business side he represented clients in industries including movie theatres, restaurants and bowling alleys, commercial printing, direct mail marketing, real estate brokerage, title insurance and retail, advising on business formation, partnership and operating agreements, employment and vendor agreements, and mergers and acquisitions. He also handled commercial litigation, including a dispute over contracts for the sale of industrial real estate worth many tens of millions of dollars.

He was named a Pennsylvania Super Lawyer, held an AV rating from Martindale-Hubbell, and was a member of the Pennsylvania and Philadelphia bar associations from 1977, the International Council of Shopping Centers from 1995 and the real estate group of the Jewish Federation of Greater Philadelphia from 2017. He spoke at ICSC and Philadelphia Bar Association seminars on topics such as common area maintenance and the duty to mitigate damages.

In 1971, at the age of 19, Mandel was set up on a blind date with Barbara, also 19 and from nearby Lower Merion. The two had been born just three days apart, and they married in June 1974. They settled in Lafayette Hill, where they raised three sons, Jason, Marc and Matthew. He coached his sons' teams and the family spent summers at Long Beach Island, Myrtle Beach and later Margate. He became a grandfather 13 years before his death and rarely missed his four grandchildren's events, often attending several games in a single day.

A devoted Philadelphia sports fan, he was an Eagles season ticket holder, a connection that began in 1967 when his father bought tickets at Franklin Field, and he lived and died with the Phillies every night. He joined White Manor Country Club in the early 1980s and remained a member for nearly 40 years, passing his love of golf on to his sons, and he was a proud member of the Tuesday Night Card Game in Lafayette Hill. His family described him as fiercely loyal and always the first to help friends or family in need.

Over nearly five decades Mandel helped turn Astor Weiss into an established mid sized Philadelphia commercial practice that bears his name. His work on shopping center leases, property deals and business formation touched many businesses across the Philadelphia region, and his long stewardship of the firm was cited by his family as an expression of the same loyalty that marked his marriage and friendships.