You will have to obtain a copy of the declaration page from the HOA in order to determine the amount of coverage and the stated RCV.
We can't answer your question about needing additional insurance. You don't provide enough information. However for condos your minimum coverage is the lesser of the the number of units in the building times $250,000 or the RCV divided by the number of units in the building.
You cannot close this loan until you have a copy of the declaration page from the HOA to properly document you have adequate coverage at the time of closing.
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The opinions expressed are mine and they are not to be taken as legal advice.