Look to see if it's a "non-conforming" loan (of which jumbo is). The rate difference between those and regular has been slim.
With rates this low and housing prices on the rise one would be a fool not to mortgage as much as they can for 30 years. Even if it's a very minor rate increase for non-conforming loans.
Yeah, it is non-conforming. And yes, we could have put more down, but at this interest rate, we thought it was better to keep extra in reserve rather than into the house.