Rafael, there are some lenders who will lend to a company, but they require either that the company have a history (P&L) that shows they are legitimate and know what they're doing or that the principal provide a personal guarantee of the loan. Sometimes, they require both. Companies with no assets other than the property you're buying would not satisfy most lenders. If your company has done this for the last few years and now owns a couple of other properties that have equity, then the bank will be more receptive.
Also, as investment properties, not owner-occupied, the bank will lend with a lower loan-to-value ration, typically 75-80%, although I have seen some at 90% not too long ago. If you're new at this, get started first and then look to move the assets into a LLC. In the meantime protect your personal assets by getting an umbrella liability policy. Once you have established yourself as a viable rental business person, then open your company.
You've gotten some great responses here (especially from Mr. Sumner). I can also add that I successfully had a closing where my clients purchased investment property through their LLC and the bank was fine with that. However, that was over 2 years ago, but it has happened, but it was also only allowed by personal backing by one of the principles (qualifying of course). We've also been told by numerous other title closers and investors that they do transfer ownership into the LLC post closing, but how they do it I am not quite sure while getting around the "due-on-sale" clause that Mr. Sumner referred to. However, when they did it, it was usually on a flip anyway and by the time the bank would have figured out, the property was more than likely already sold and they moved on to the next deal. The bank that worked w/ my investors was Gold Financial. I don't have a contact for you, but I'm sure you can find them on the internet.
1. You have to pay transfer tax again (depending on your state)
2. Your deed will not match your mortgage, depending on your lender; they may have a huge problem with this
Most, if not all large lenders have discontinued this program. Check with you local bank in the neighborhood the house is located. Some smaller banks will offer these at 70-75% LTV.