Couldn't find this question in other forums so let me know if I have missed it!

Situation: Received a map change for a property that is now in the flood zone, when it was pulled it was not. The appraisal does not separate out the values for each building- How can we determine how much insurance is needed? Anyone else run into this issue?
The process we have in place is to request values per building if it is in a flood zone. If its not in a flood zone, we just go for the market value.

Appreciate any insight!

You could try looking at the hazard insurance policy for RCV/ACV on the structures. Might be a good idea to try to get a cost approach on your appraisals in the future just for scenarios like this.