In many commercial real estate and business transactions, it is not unusual for the parties to enter into a letter of intent, sometimes called a memorandum of understanding or term sheet, before preparing, negotiating, and executing a formal agreement. Though parties generally do not want letters of intent to bind them, letters of intent can provide the framework for later establishing the formal agreement.  Evan Randall

Building green is not much different than any other construction project. One must be aware of the costs, time constraints and overall expectations for the final product.  Daniel Pabon

Recognizing that risks may lead contractors inflate bids to cover such contingencies that may or may not occur on a project, many owners, particularly government owners, include a differing site conditions clause in the contract.  Kevin Bridston