The most a landlord can raise rent in Texas is 10 percent of the previous year's rent amount. For example, if your monthly rent was $800 last year, your landlord could raise it to $880 this year. Landlords are also allowed to charge new tenants a higher market rate as long as they give written notice 60 days before the move-in date.
Some landlords try to get around these rules by adding extra fees or changing the terms of the lease agreement. If you think your landlord has raised your rent illegally, you can file a complaint with the Texas Department of Housing and Community Affairs.