Tenant built structure on property and wont remove it

[Aundrea Newbern]

Hi All,
I just purchased a duplex in GA last week. One of my tenants is moving out in a couple of days. She built a storage shed in the backyard that was partially destroyed by Hurricane Matthew. She says the previous owner gave permission to build it but she can't provide proof. Also, she said she can't afford to remove it. She only put down a $400 security deposit. What would other landlords do about this?