Less than a week a former Boston Planning and Development Agency official pleaded guilty to taking a $50,000 bribe from a developer to influence a city Zoning Board of Appeals vote in 2017, Mayor Marty Walsh announced a “comprehensive” review of the board and its practices.

The review is being conducted by the law firm of Sullivan & Worcester. The firm will examine the rules and regulations in place that dictate how the ZBA conducts business on behalf of the residents of Boston, and those with matters before the board.

John M. Lynch, 66, the former assistant director of real estate at the Economic Development Industrial Corp., a division of the BPDA, took the bribe from an unknown developer, who had a longstanding personal relationship with Lynch. According to the criminal complaint the developer, who was only identified as “Individual A” in court documents, sought to sell a parcel of residential real estate in Boston but needed ZBA approval to extend a permit that would have allowed the property to be sold as a multi-unit development, prosecutors said. To get the permit extension, the developer agreed to pay $50,000 to Lynch, in return for Lynch using his influence at the BPDA to secure a vote from a ZBA member. As a result, the developer was able to achieve a $500,000 increase in the property’s price when he sold it.

An announcement from Walsh’s office promised the review would “inform any opportunities moving forward for how to institute even stronger operational controls and accountability at the ZBA.”

“Since taking office, my administration has worked to level the playing field in the development process in Boston, emphasizing transparency and ensuring broader access and input from the community,” Walsh said in a statement. “I recognize that there is always more work to be done to make the business of city government more accessible and transparent to everyone. I am hopeful that we will learn from the findings of this review how else we can better serve our constituencies and implement best practices used in the field.”