Can a commercial building be financed at a higher price that the appraised value?

[Jorge Leon]

My father has a commercial building in a very busy street in Chicago. A church is currently leasing it for $5,000 a month. The church people asked my dad if he would sell them the building. They would have to finance.

If my father's asking price is higher than the appraised value, will the lender still approve the loan? Or would we have to adjust the price to the appraised value?

Would the buyers need to put 20% down since it is not a residential building?

Would real estate agents be needed if the they come to an agreement in terms of the price, or would we just be dealing with the mortgage lender?

Looking for any input, thanks.