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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.
There is unfortunately no law that would allow you to break a tenant's lease in order to move a family member back into the premises that you rent out. Your tenants have a legal right to be there until the lease ends. If you want to ask them to move out early, they'd have to agree - and they could ask that you pay them for the inconvenience (since they have no legal obligation to leave). But if you simply told them to get out, they don't have to leave. And there are harsh penalties for a landlord who changes the locks, turns off utilities, removes the outer doors, or otherwise tries to force tenants to leave without a court order.
Once the lease ends, then you can provide your tenant with notice that you will not be renewing it. Check the lease to see how much notice you are required to give. But you are unfortunately required to wait unless the tenants are willing to leave.
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