The Zoning Board of Appeals will hold a hearing Thursday at 7 p.m. to discuss a housing proposal filed under the state’s Chapter 40B affordable-housing law that would add 184 apartments to Hancock Village in South Brookline. Chestnut Hill Realty is proposing a mix of one-, two-, and three-bedroom units on the property, after making adjustments to its design submitted last fall that called for 192 units, according to town documents. Between 20 and 25 percent of the units would be set aside for income-eligible households based on Chapter 40B requirements. The law gives developers the ability to bypass some local zoning restrictions in communities where less than 10 percent of the housing stock is considered affordable; Brookline falls about 2 percent short of the threshold. Opponents to the project have raised concerns that the additional apartments would exacerbate the town’s already overcrowded school system, destroy local green space, and increase traffic. The hearing will be held in the selectmen’s hearing room on the sixth floor of Town Hall. For more information on the hearing and the proposal, visit www.brooklinema.gov.