813 CONGRESS ST is cataloged under the Harris County, TX property tax appraisal roll with a certified market valuation of $223,475. Structural improvements constitute 66% ($148,475) of total parcel value, with allocated land value accounting for 34% ($75,000). The parcel currently benefits from a statutory tax assessment differential of $79,475 (35.6% below market), which is subject to standard ad valorem adjustments upon ownership conveyance. Based on the prevailing TX benchmark tax rate of 1.72%, estimated annual ad valorem taxes are approximately $3,844/year.