Contact an agent to help you find homes that are available. As Linda said if you see homes listed without an address those are most likely just an attempt to solicit business from individuals. Work with an agent who can show you all the homes in the MLS or even those that are not listed there. The vast majority of homes will be in the MLS and since it's a numbers game looking there will put the odds in your favor of finding what you want as soon as possible.
Best of luck to you.
REALTORÂ® | Mortgage Broker
Keller Williams Realty | 360 Lending Group
o 512.669.5599 m 512.633.4157
email@example.com | www.AustinListed.com