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I'm Lucy, and I'd be happy to answer your questions today. I'm sorry to hear about your situation.
Texas Property Code, Section 92.013 gives a landlord 30 days to return a tenant's deposit or provide an itemized list of reasons for keeping it after the tenant vacates. Your tenant has no right whatsoever to insist that you return the deposit before he's left, because his right to the deposit doesn't mature until he's moved out. He's welcome to go file a lawsuit, but he can't win as long as you account for the deposit and return any balance due by the 30th day.
You can do the walkthrough before he's left, but he's still liable for any damage you can't see because his belongings are still there, or any damage he causes on the way out.
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