New Construction Appraisal

[Adam Smith]

I'm in the process of buying a vacant lot to build a duplex on. Something was just brought to my attention regarding appraisals. This duplex is going to be built in an old neighborhood, the actual street is nothing but older duplexes. I was telling one of my mentors what I was working on and he told me that my new duplex may not appraise due to nothing to compare it to, he said he was going to check on some things for me.

What are my options from here?

What happens if it doesn't appraise for what I need it to?