Here are some recent mortgage rates. All require about 1.5% closing costs. Use a mortgage calculator at the right to get more precise numbers.
30 year mortgage rates 7%
15 year mortgage rates 6.7%
1 year adjustable rate (30 year loan that adjusts after 12 months) 6.0%
If you do not have 20% income, you probably can not get a loan right now, so these rates probably don't apply and if they do, they are 1% too low.
If you want a jumbo loan, get prepared to pay through the nose in the current market. Jumbo rates are about to jump 1 % or more if they are available.