While “not in my backyard” has become the default response to development proposals in many communities, in a few places NIMBY is starting to meet its match. YIMBY — which stands for “yes in my backyard” — is a fledgling national movement, concentrated largely in already densely populated and high-cost urban areas, that is pushing a very different message: We want to see more housing, more density, and a tempering of the run-up of housing prices in our community to make it more accessible to all, say YIMBY activists.

The Boston area has several YIMBY groups — in Somerville, Cambridge, Newton, and Jamaica Plain. Eric Herot and Meg Wood of JP YIMBY join the Codcast this week to preach a bit of the community-based, pro-growth gospel. They’re not out to carry water for developers, but Herot and Wood often support their projects because they say neighborhoods like theirs will benefit from more housing. The tensions that can set off are clear.