Usually a corporation forms an LLC and the loan is based on the property, downpayment and one of the partners of the LLC. From what one learned from a client of mine, you normally have a large downpayment.
The best person to break it down for you would probably your mortgage professional.
Dave Tap Tapper
Yes most major RE broker firms will insist and require you to become a Realtor. A Realtor is obligated to follow certain code of ethics and by being a Realtor you will join a group that is very powerful in protecting our industry and big firms want to support that.