80 % is the overwhelming standard for those types of loans but you can search for "creative" types ( read higher risk takers thus higher costs ) who go higher. Alex in here would know the current offerings.
However, I throw out the idea that maybe it is a good idea that the biggees don't go above 80 %, they have been in this a long time and have seen millions go under due to too much debt.
You better be pretty sure of your situation ( reserves ? ) and your plan ( reinvest how ? don't spend ! ) if you plan on going to 90 % ltv.