Oh my!
First, I am not a builder, contractor, but I am guessing that if water is seeping up through concrete lanai, what would keep it from seeping up into other parts of the house???
I would want to get to the bottom of this as quickly as possible. My overactive imagination can see it also coming up under the flooring. After such a long time with out appearing before, broken/leaking sewer line? Ground settling more than expected when lots were being graded. Etc. Whatever, this is not normal, IMHO.
Been in our home since 2013 and every year we have had some really heavy downpours and this has never happened to us, thankfully.
Good luck and please keep us posted.
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