how to calculate cam per square foot
Broker/Agent. Arlington Heights, IL. View Profile. pro-rata share: Take total actual CAM expenses from the prior year (or CAM budget if you know that planned expenses are different that the prior year) and divide by 100,000 to determine CAM cost per square foot.roker/Agent. Arlington Heights, IL. View Profile. pro-rata share: Take total actual CAM expenses from the prior year (or CAM budget if you know that planned expenses are different that the prior year) and divide by 100,000 to determine CAM cost per square foot.