Can a Texas landlord raise rent at lease renewal?

Yes. The end of a fixed-term Texas lease is the typical (and statutorily safest) time for a rent increase. The landlord serves a renewal offer with the new rent, with at least the statutory notice period before the current term ends (Texas has no statewide statutory advance notice for rent increases. Lease terms govern. Default practice is 30 days written notice on a month-to-month tenancy, matching the Tex. Prop. Code 91.001 termination rule. No state rent cap, and local rent control is preempted.). The tenant has three options: accept and sign for the new term at the new rent, decline and vacate at term end, or stay past term end and convert to a holdover or month-to-month tenancy depending on state law. Where rent control applies, the renewal increase is capped at the statutory annual cap even at renewal. If the tenant continues paying the old rent past the renewal date without signing, Texas courts often treat this as acceptance of the new rent only if the landlord has given proper written notice and accepted the new payment.

Source: Lease-based; Tex. Prop. Code 91.001 (30-day month-to-month termination default)