They all seem to be regular homeowner type companies. 

. $1,200 per monthI'm at that crucial point where everything seems a bit overwhelming.

Some insurance companies have told me they don't insure LNC buildings cause 'replacement' wouldn't be a straightforward process, as there's usually no detailed record of such grandfathered buildings' layouts in the records to permit re-building following a fire, flood, quake, etc.Others have said at least in while securing quotes, it's a non-issue.Surely they both can't be correct!?

And, with only 10% needed down for the purchase of the property, and only 10% down needed for renovations, it seems that if we buy a property right, renovate it and add 10% in value, we could potentially refinance into a more conventional loan without having to bring additional cash to the table .

It would seem that this particular crawl space did not have a dehumidifier.

It does seem like it is not super uncommon, so I will make sure to vet this a bit more aggressively and proceed with caution.  

To be honest, 5.3m of debt on $9 m of development risk seems too high.

In of your other threads, you seemed to be interested in other debt investments that generated income. 

How can I accurately calculate NOI when the experts can't seem to agree on the fundamentals?

All within reason and it seems too many are beyond reason.