As we reported a few weeks ago, the Landmarks Preservation Commission is gearing up to create a huge new historic district on the Upper West Side. Last night, the commission held a meet-and-greet with the neighbors, at which the tentative boundaries for the new district—technically five contiguous extensions to five existing districts—were unveiled. As the map shows, it’s quite a lot of real estate, and though smaller than the extant Upper West Side historic district (2,000+ versus 745) it will become, should it be approved, one of the largest in the city. What’s most interesting, though, is how much of the Upper West Side will now be under the commission’s purview. It will be interesting to see how the development community reacts.