The town recently submitted a housing production plan to the state Department of Housing and Community Development. The plan was approved by the Planning Board and the Board of Selectmen, according to Steven Sadwick, the town’s community development director. Developed by the town’s Local Housing Partnership in collaboration with the Northern Middlesex Council of Governments, the plan outlines a strategy to meet the requirement set under the state law Chapter 40B of having 10 percent of its housing stock affordable. Cities and towns below the 10 percent threshold that have a state-approved plan and meet the plan’s housing production goals gain the power to control Chapter 40B development in their communities. According to the latest state figures, Tewksbury is at 9.4 percent.