A warm welcome goes a long way. That may be the understatement of the year, but it needs to be said at times. On your way to building community the first, and perhaps the simplest, step is a welcome gift to new residents. It can be an simple as a fruit basket or a gift card to your local hardware store.
You can even take the time out to make a chalkboard! It's easier than you think and also inexpensive, but full of heart as it shows a welcoming spirit. For easy step-by-step directions on making a chalkboard, be sure to check out Song of Style--there's even a video tutorial.