An Improvement Location Certificate (ILC) is NOT a land survey recognized by the State of Colorado. Typically the minimal drawing required by mortgage companies, an ILC shows improvements, easements and right-of-ways on the property in relation to the approximate boundary line.
The most popular Real Estate Land Survey is an Improvement Survey. An improvement survey shows the location of the extents of the property as well as all improvements such as buildings and fences. Easements and right-of-ways are also located.