The short answer is not really. At an informal hearing, the central appraisal district is not permitted to raise your assessed value so there is no risk to you. The majority of tax protests are settled at this informal hearing.
In an instance where a reduction cannot be negotiated at an informal hearing, you must present your case to the Appraisal Review Board. Rarely are assessed values raised at the Appraisal Review Board hearing. In fact, property taxes are only raised about once in every 10,000 Appraisal Review Board hearings. That is less than 1% of the time!
While there’s little risk your property taxes will increase, we do not advise you protest yourself. In 2010, of those who filed their own protest, only 22% achieved a value reduction. Of those who were represented, 79% achieved a reduction. It is to your advantage to seek out representation so you have the best chance to achieve a property tax reduction. Texas Tax Protest can help!