When figuring general requirements, do not include the salaries of the project managers or any other personnel who are not directly site-related. Their wages are included in “Main Office” overhead.

Always allow for cleanup in the estimate. No matter how clean a subcontractor leaves an area, it is almost always necessary to clean the area again.

In locations where snow is likely, allow for the expense of snowplowing if the project begins, ends, or works through the winter season. Another consideration is melting snow, which will inevitably end up in trenches, pits, or other low areas. Consequently, pumping costs should also be carried.

Always visit a proposed site. Do not rely on someone else's judgment unless statements in the contract require it. Check for:

• Site Access — Can loaded trucks move into and out of the site easily? Is the site in/near a residential area? Are there height/weight restrictions?
• How far away are the utilities that can be hooked into for temporary power?
• Site drainage — Is the area marshy? Will there be water problems when it rains?
• Do any utilities need to be relocated?
• Will any adjacent structures be affected?
• If any of these items apply to the project, the associated costs must be estimated and included in the project bid/estimate.

The cost for installing temporary utilities, especially lighting, may be included in the specifications for the respective trades. Check this out to avoid adding an unnecessary cost to the estimate.