You can claim a total property tax exemption on your primary residence for a year in which you served outside Utah. You must have served outside Utah for 200 days in a continuous 365-day period that began in the prior year, and you must have been the owner of record on 1 January.
Apply through the county auditor or treasurer where the property is located, not the state. File the application with your military orders on or before 1 September of the year of your qualifying service, and re-apply every year you are eligible.
The exemption application, your military orders showing service outside Utah for the qualifying period, and proof that you were the owner of record on 1 January.