The determining factor is what "live close to my house" means in terms of a 2.4GHz wireless radio path. "Line of sight" is the operative consideration. If you can't see them with your eyes, it won't work.
If any one of these houses is sitting on a hill and has visual line of sight to all of them, you can probably do what you want. If each of these homes happens to have a second story window that faces a second story window at the central location, it will be relatively easy and inexpensive.
Otherwise you need to create that line of sight, using towers or whatever, and it might not be reasonable.