To build credit on your LLC, start by applying for a credit card with your LLC name, and the Federal Tax I.D. no. which you applied and have been given by the IRS. You may also have to add a social security no. in the application, but the credit card should be a business application not personal. Have a sales forecast for 2012 on file for the LLC with marketing, sales plan, and you should know your expenses. On a separate issue, with regards to buying real estate with no money down, one of the ways is to negotiate with the seller of the home that they accept your note for the down payment, and assume the existing loan of the seller. In today's market and any other market for that matter, finding this exact scenario is challenging, because the seller, should have the existing mortgage which is assumable. A better technique in today's market is for you to find a cash investor to work with you in a joint partnership, whereby you would be the one locating the property either REO or Short Sale or Standard Sale and you would do the leg work in the locating, buying process and possibly fixing it up and the cash investor would finance the purchase 100%, and form an agreement with you beforehand, to split the profits when you resell at a later date, or any other type of compensation.