10. Commitments and Contingencies Construction Contracts . As of June 30, 2017 , we estimate the total additional cost to complete the six consolidated projects currently under construction to be approximately $173.2 million . We expect to fund this amount through a combination of one or more of the following: cash flows generated from operations, draws on our unsecured credit facility or other short-term borrowings, the use of debt and equity offerings under our automatic shelf registration statement, proceeds from property dispositions, equity issued from our ATM program, other unsecured borrowings or secured mortgages. Other Commitments and Contingencies . In the ordinary course of our business, we issue letters of intent indicating a willingness to negotiate for acquisitions, dispositions, or joint ventures and also enter into arrangements contemplating various transactions. Such letters of intent and other arrangements are non-binding as to either party unless and until a definitive contract is entered into by the parties. Even if definitive contracts relating to the purchase or sale of real property are entered into, these contracts generally provide the purchaser with time to evaluate the property and conduct due diligence, during which periods the purchaser will have the ability to terminate the contracts without penalty or forfeiture of any deposit or earnest money. There can be no assurance definitive contracts will be entered into with respect to any matter covered by letters of intent or we will consummate any transaction contemplated by any definitive contract. Furthermore, due diligence periods for real property are frequently extended as needed. An acquisition or sale of real property becomes probable at the time the due diligence period expires and the definitive contract has not been terminated. We are then at risk under a real property acquisition contract, but generally only to the extent of any earnest money deposits associated with the contract, and are obligated to sell under a real property