If the landlord unfairly keeps your application deposit, you should at least send the landlord (the manager, management company, and/or the owner) a demand letter explaining why it is unfair and demand the return of the deposit. Hopefully you can work something out, but if you don't then consider taking the landlord to justice court (also called justice of the peace, or JP court).

If the landlord keeps your application deposit in bad faith the Texas Property Code says you are entitled to $100, three times the amount of the application deposit, and the applicant's attorney fees and court costs. Tex. Prop. Code 92.354.

If a landlord rejects you, they must give your application deposit back promptly. If you reject the landlord you still might be entitled to some or all of your deposit back. Despite the language in an application agreement, a landlord is not entitled to keep an application deposit when the result is grossly unfair. Courts routinely hold some contractual provisions to be too harsh and will ignore them if the facts of the case are compelling.

Thus, if you think you have a good case, and the deposit is significant, you might consider suing the landlord. We can help you if you need a form lawsuit for filing suit in JP court.