 Infilling can be a way to repurpose largely unused urban areas. And while some may hear the term and think of gentrification, which can carry a negative connotation, Lupton says focusing on a community need can create a distinction. When there's a really serious emphasis on affordable housing and on making it such that people can afford to live there, that I think that, to my view, it's not gentrification or either that or gentrification is not a dirty word.