HOUSTON -- The Houston Association of Realtors today demoed a new version of its consumer-facing website that it's testing as it prepares to expand HAR.com’s coverage area to the entire state of Texas, and also do something that third-party portals like Zillow and Trulia are perhaps best-known for: serve up property tax, school and neighborhood information to consumers. Houston is the only major U.S. market in which Zillow is not the most visited real estate search portal, HAR said in demoing the beta site for reporters attending the National Association of Real Estate Editors' conference. The HAR.com beta site offers a home value finder that provides property tax data, including assessed values, for off-market properties. Recently sold properties are accompanied by an estimated va...