Duplex zoned as single family

[Hannah Costello]

There is a property that is definitely a duplex, but the previous owners did not keep up with the duplex permit. So the listing says it is now zoned as a single family until someone renews the permit. If you use a conventional 3% first time buyers loan for this will you run in to any issues with loan approval or even appraisal?

For reference the listing says “This property could be set up to be a DUPLEX if permit is obtained or can be used as a single family home.”

Located in Norristown PA

Thank you in advance!