Getting a property for 100k under asking is not uncommon specifically the way you state how you found it.

It is not uncommon to miss something significant during the hustle and bustle of getting a unit ready or on move-in day.

It is not uncommon to see people equate "cash offers" with "as-is purchases", but this is not necessary. 

In NYC it is not uncommon to find out that someone "cut corners" and has been getting away with it while profiting.

@Gary GarciaThat 20% cap rate at market value seems uncommon.

It's not uncommon for me to list my rentals 1-2 months before vacancy. 

FWIW @Abe B. basement units are uncommon for properties in Providence.

Therefore, a "straight-line adjustment" occurs where all of the comps are smaller and there is no indicator of value that is setting the upper limit of value due to it being larger than the subject.Its not uncommon to have limited comps that don't allow you to bracket, but the appraisal is not as reliable when this is the case. 

It's not uncommon for these companies to charge an arm and a leg because they expect insurance to pay for it.I would contact multiple companies (if available), explain exactly what happened, and then hire someone with a reasonable response and a good reputation.

The result is I felt even better about MSHB after an eviction than before.Additionally, it's not uncommon for my tenants to be late on payments.