Landlords cannot "unreasonably" refuse permission to sublet under Florida state law. If you have a lease for a set term, like one year, you can sublet with or without your landlord's permission, unless they prohibit this in the written lease.Consult with our top attorneys today. Sublease Agreements are legal documents detailing the terms and condition of the lease of a property to a new tenant. This is legal in Florida, although state courts have ruled that landlords can't "unreasonably" refuse permission to sublet. It depends on the terms of the original lease with the landlord; namely, whether it allows subleases. Create your Florida sublease agreement, and sublet your property. Rent your unit to a subtenant with our free template.