Crazy. Did you already know the neighbors before? We introduced ourselves there once and occasionally talk when we are on the construction site. But it’s not close contact yet. Did you officially invite them all or how does something like that work?
Often with community developments, you have all the names. Semi-detached houses, terraced houses, a common general contractor, shared concerns create cohesion and solidarity.
In our case, the monastery chamber always ran a mailing list to every leaseholder (until someone complained about data protection).
Otherwise, we always smiled at all the builders who, like us, were seen on the construction site.
You also have to send signals and spend time in front of the walls. My husband eventually always held two beers in his hands and "visited" other men. Beer bonds people together.
For the topping-out ceremony, we printed flyers in A5 and placed them in the construction sites or mailboxes.