Write a letter to a state agency, like the DMV, or voter registration, that will require an answer from them. Acceptable Proof of Residency in Montgomery County.Homeowners: A copy of your current property tax bill. The certification packet includes a sample of the documents to satisfy proof of current residency, please refer to those as needed. You do have a lease, it's just month to month tenancy. Pennsylvania state law does not specify how much notice landlords or tenants must provide. Get a state issued ID card or driver's license from NY. What government issued ID do you currently have now? If the petitioner's driver's license shows an address out of county or out of state, proof of residency is required at the time of filing, i.e.