Gloucester County assessor Derek Green will be leaving at the end of May to take the position of assistant assessor in Albemarle County, with a population of nearly 100,000 residents.

Green was instrumental in turning around Gloucester’s reassessment department, which had previously been criticized for delivering what some considered a flawed assessment of county properties in 2010.

Green, who came to Gloucester in July 2012, said he faced numerous challenges when he took the post, including a lack of staff, a major change in software to use to generate the reassessment, and no standard operating procedure in place for department staff.

One of the first things Green said he did when he took over in Gloucester was send out mailings to residents of certain properties asking all improved residential and agricultural property owners to review the information about their properties for accuracy. “We had a 60 percent return rate,” he said. “And for Gloucester, I he...