In 2002, Weinberger returned home to Vermont and co-founded the Hartland Group in Burlington. In less than nine years, his company built over 200 affordable and market rate homes in Vermont and New Hampshire, consisting of over $40 million of development. His work has won a smart growth and a green building award, LEED certifications, and has involved the clean-up of environmentally contaminated sites. Weinberger's previous professional work included three and a half years with the Greyston Foundation, a community development organization in southwest Yonkers, and a short stint as a sports writing intern for the Boston Globe.
Mayor of Burlington
Weinberger was elected mayor of Burlington on March 6, 2012. In the election for mayor, Weinberger won the closely contested party primary against Tim Ashe and faced Republican Party opposition in the general election from Kurt Wright. Weinberger won final with 57.7% of the vote. He was re-elected to a second term on Tuesday, March 3, 2015, Town Meeting Day with 68% of the vote over former Burlington Public Works Director Steve Goodkind. On March 6, 2018, Weinberger defeated Carina Driscoll and Infinite Culcleasure in a highly publicized election to win his third term in office with 48% of the vote. In his time in office, Weinberger has focused on mitigating Burlington's contributions to climate change, improving early learning opportunities for the youth, stewarding the City's financial health, leading initiatives to regulate the City's housing market, and combating the opioid epidemic. The City of Burlington became the first city in the country to source 100 percent of its energy from renewable generation during Weinberger's tenure as Mayor in 2014. Weinberger and his administration have set a goal of becoming a net zero energy city within the next 10–15 years. In coordination with the City's Electric Department, Weinberger has overseen an expansion in solar installations in the City of Burlington – from 25 solar arrays pre-2012 to about 160 in 2017 – as well as in electric vehicle charging stations and electric vehicle purchasing incentives.
Personal life
Weinberger married Stacy Sherwat in 2000, and they have two daughters. Stacy is the Early Education Director at the King Street Center. He plays catcher for the Burlington Cardinals in an over-35 men's baseball league. Former Boston Red Sox pitcher Bill Lee is also on the team.