From my discussions with coworkers on the NIMBY side the real reason they were so interested in preventing new construction in their towns was to keep the child

From my discussions with coworkers on the NIMBY side the real reason they were so interested in preventing new construction in their towns was to keep the children of poor people out of the schools their own kids were going to more than to raise the values of their houses. And some fears that the sort of people who would move into cheaper housing would cause higher crime rates.