The Texas Seller Disclosure does not ask the seller/landlord to report anything in regards to crimes accept for a death or production of illegal drugs. A new web site from the Houston Police Department has been developed that you can review to see updated information.. http://mycity.houstontx.gov/crime
Also the seller/landlord do not have to discuss sex offenders, even if they think there is one living near by. You will have to review information posted on the Texas Department of Public Safety's web site.. https://records.txdps.state.tx.us/DPS_WEB/SorNew/index.aspx
Speaking to the local police officer or duputy sheriff can also provide some information on a particular area. Knocking on a neighbors door could be a good call. The more you know about an area before you purchase or lease, the better. Keep in mind your Realtor does not have this information and cannot advise on what is a "good" or "bad" area. Let us know if we can assist you.