Tenant Rights Restoration Act of 2010 - Amends federal bankruptcy law to prohibit a bankruptcy trustee from selling real estate that is the property of the estate free and clear of an existing leasehold interest unless the lessee is permitted to elect either to: (1) treat such lease as terminated by the sale; or (2) retain its rights in or appurtenant to the real property for the balance of the lease term, including any renewal or extension of such rights, to the extent that they are enforceable under applicable nonbankruptcy law.