First of all, I would not date a neighbor or a co-worker untill you get to know them very well, as you are gonna be stuck with them.
That aside though, it is pretty simple. Knock on the door when you know she is home. When her ma answers it, tell her you would like to speak with her daughter. Ask the girl if she wants to go get a creamy with you and go see a movie. That is how I did it and it worked fine. :P
Best advice, don't be afraid and don't put a lot onto it. Girls do not like nervous guys. Let her know you want to spend time with her, but don't let her smash you if she refuses.