Domb was born in 1955 in Jersey City, New Jersey, the second son of Edward Domb and Betty Schlesinger Domb. Domb's father and grandfather worked in the embroidery business. The family relocated to nearby Fort Lee, New Jersey soon after Domb's birth. Domb and his older brother, Peter, embarked on a series of odd jobs from a young age, shining shoes, shoveling snow, and mowing lawns. He graduated from Fort Lee High School in 1973 and started college at American University in Washington, D.C. Domb took evening classes there and worked full-time selling security systems for Phelps Time Lock Service in Hyattsville, Maryland. He graduated in 1977 with a marketing degree and continued to work for Phelps, being transferred to Philadelphia to manage the company's office in that city.
Business career
To earn extra money while managing the Phelps office, Domb earned a real estate license at Temple University. As the real estate business became more profitable, he quit the security business job and sold real estate full time, opening his own office in 1983. Domb specialized in real estate near Philadelphia's Rittenhouse Square and soon became well-known among property buyers and sellers in that neighborhood. He was elected president of the Greater Philadelphia Association of Realtors in 1990, the youngest president that organization had ever elected. After success in real estate sales, Domb expanded into real estate developmentin 1999, and worked with restaurateur Stephen Starr to develop restaurants in Philadelphia. Domb was again elected president of the GPAR in 2013, by which time he had acquired the nickname "Philly Condo King." In his second term as GPAR president, he worked with Mayor Michael Nutter and the city government on ideas to collect delinquent property taxes and attract new residents to the city. He also worked with City Council President Darrell L. Clarke to determine the market value and ultimate disposition of some of the city's inactive school buildings. Even after entering politics, Domb remained active in the real estate business, purchasing a 19-story office building in April 2016.
Political career
Nutter was term-limited, meaning that the office of mayor would be open at the 2015 election. Early in that year, there were reports that Domb was considering a run for the office. A registered independent, Domb was said to be "testing the waters," possibly as an independent or a Republican. Instead, in May of that year, Domb announced he would run as a Democrat for one of the city's seven at-large council seats. Pledging some of his vast personal wealth to the cause, Domb described his goals in office: "We will talk about collecting taxes from out-of-state landlords and using that money to fund our schools. New job training programs. And partnering with our universities to mentor our children." In the primary election that month, Domb placed third, winning one of the five Democratic nominations. In the general election in the majority-Democratic city, Domb again placed third, earning a seat on the council. In office, Domb continued to search for solution to the city's large number of tax-delinquent properties. And will be running for mayor in the 2024 race.