... asking if they want to move?
We live on a new build estate and want to upgrade to a bigger house. The side that we are on are mostly south facing, so by default the other side of the road are mostly north-facing. There are a few plots that will be available at some point this year with west facing gardens.
Would it be rude for me to post letters through the already built houses (they've been built for almost 2 years) asking if they were considering moving? As if they are, we would like to buy an already built house over a new one.