Real Estate Investors who operate there company like a business have to use many different creative ways to purchase real estate. You always only have so much money liquid and you can only buy a limited amount of properties with your credit.
Here are some many different ways that you can purchase real estate using other peoples money.
Private lenders. I love private lenders! Right now we are typically paying our private lenders a 6% to 8% rate. You can find them anywhere. I tell everyone I meet that I invest other peoples money in real estate. It is always the person you would least expect that has the most money. Be sure to read the rules on private lending for your state.
Equity Partners - you may find people who have money but want more of a return than private lenders. Do an equity partnership. They can bring the money for the deal and you can split the profits/cash flow. You negotiate the terms. An equity partner would take on some of the risk though. Meaning if the deal goes sour they are stuck with no recourse to you.
Credit Partner - Maybe you find someone with great credit and a little down payment. You can partner up with them to buy houses or to refiance you out of rental properties. My friend Missy specializes in buying houses cash, fixing them up, selling them to an investor with great credit, and then lease optioning the property back. With negotiated terms when the property is sold.
Seller Financing or taking over exsisting fiancing subject to - So you can buy a house and have the seller take back a note and mortgage if there is equity in the property. Then they become the bank. Or if there is exsisting financing in place then you can take that over.
The list can go on and on but I hope this gives you some ideas.