Fill out our form and get a no-obligation cash offer today! You're just one step from getting a FREE cash offer for your vacant house!Once the personal property is considered abandoned under the law, it must be reported to the Texas Comptroller. A squatter is someone who occupies a property without legal ownership or permission from the property owner. Adverse possession in Texas refers to circumstances under which one may lawfully lay claim to ownership of property not originally one's own. The term squatting refers to the act of occupying a property without the owner's permission. Registration is required within 90 days when the City issues a Notice to Register Vacant Building to the property owner(s). 601 NW Loop 410, Suite 350, San Antonio, Texas. 78216 (Attention: Corbin Barker). Sell Your San Antonio Vacant House.