You can have as many as three, and as few as one. If you purchase the land at the same time you close a construction loan, and that construction loan is a “single close” construction loan, you can get by with just one set of closing costs, and one escrow. Three sets of closing costs would be incurred if you: 1) purchase the lot first, either paying cash or by getting a lot loan, 2) you obtain an interim construction loan when you have plans drawn and a builder lined up, and 3) you then obtain a “take out” loan to provide the permanent financing.