Off of southwest pkwy, between Texas and Welsh, there are a few streets of duplexes (Lawyer St, Trinity Place; I think the next one is Dexter Dr.), and there are some just south of FM 2818. If you take Welsh and pass FM 2818 (Harvey Mitchell Pkwy. S.), head south, there are several side streets over there (branching off of Welsh, several with San as part of the name) that have duplexes. There are also some duplexes (I think; might be fourplexes or something, but they have yards) that are right by the CS post office (Harvey Mitchell near Longmire); there's a little street by the post office that has a few duplexes or fourplexes. I don't know which ones are available now or prices (although the 2 bedroom duplexes should be in your price range), but a lot of those put signs out in the yard when they have something. Sometimes they say available now; if someone moved out early, you might be able to move as soon as you need to).