yimby

/Y IH1 M B IY0/
noun
  1. 1

    Someone who endorses development (especially the construction of more housing) near them.

    โ€œThe local YIMBYs came out in favor of the project.โ€

Source: https://en.wiktionary.org/wiki/YIMBY, https://en.wiktionary.org/wiki/yimby