Taxes. Nobody likes them; everybody pays them. I’m sure when you considered buying your Siena Round Rock TX home you heard about the potential tax savings. Now you own a home in Siena and pay your own property taxes for Williamson County and Hutto ISD. You want to pay as little as you have to, because who would want to pay more? The good news is that you can reduce your property taxes by claiming a homestead exemption!