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.Ask for rent receipts showing the physical address as well as your mailing address. A rent receipt should work. There is any number of reasons you may need a proof of residency letter. We'll tell you why you may need to write one and what to include. 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. Eviction is the court ordered removal of a tenant and the tenant's personal belongings from a rental property.