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Not offhand but there's probably some out there given there were 10% down from some Cali CU's even a few years ago when I was looking at a jumbo loan.
Talk to a few lenders, I'd start with one of the big banks who are competitive in the jumbo space just to see where the market is... I'd simply walk into my local Chase branch and ask for their mortgage rate tier sheet as that'll give LTV and other things needed for given property types.