Determining a building’s potential future income stream is complicated, and it involves examining many physical as well as business aspects of the building offered for sale. Although the Standards of Practice are available and extremely useful, the goal of a commercial inspection is to provide the client with the information they need to enter into transaction negotiations with as much power in their possession as possible. In a negotiation, knowledge and documentation are power. Gathering this information is the process of due diligence and where commercial inspectors play a key role. The due diligence provided by commercial inspectors will vary, sometimes substantially, with the nature of the transaction. Variables may include building age, type, use and location. This includes Mold, Radon, Air Quality, and Infrared and Energy Audits.