Underwriter problem w/ multiple SFH under 1 tax Id act.

[Erika Muller]

i am looking at a paid off property consisting of 2 lots with 2 separate SFH under 1 tax id act. Each house has individual utilities, driveway & mailbox. Underwriter is looking for proof that property taxes are paid for both houses since they have separate addresses. The county Tax ID account lists both buildings under the description. Any what types of documents can be given to the Underwriter to close this deal?