Billboards - Be Careful
In some jurisdictions, such as Nevada, you will actually have to estimate the lost revenue due the sign company.
http://caselaw.findlaw.com/nv-supreme-court/1474750.html
In most Nevada jurisdictions, new billboards are effectively under moratorium so if you extinguish a billboard, you cannot replace it at a new similarly competitive location. So in effect, the sign company will be permanently losing their revenue stream when you take a billboard property.
Billboard valuation has to be about the most contentious aspect of valuation amongst appraisers I have ever run across. The methods, techniques, and procedures and disagreement even over what type of property a billboard is becomes one of the most contentious debates in the industry.
I have a collection of articles in PDF format I have gathered over time on this issue. When dealing with a billboard in the context of eminent domain, I would strongly recommend hiring somebody that deals with billboards on a full time basis in their practice to handle the billboard component.
There is an outfit in Phoenix, I think,
www.signvalue.com that specializes in billboard valuation and billboard data. You may be able to consult with them or hire them as a contractor for any billboard component of what you're dealing with.
Essentially, for the condemning agency in Nevada taking a billboard, you will have to deal not only with the property owner, but the advertising company renting the billboard location from the property owner. Further, the measurement of compensation to the ad company will be the value of the ad revenue that the sign could generate on the site. Get ready for some arguments boys and girls... If there is a moratorium or lock on billboards in your jurisdiction, this opinion may be operative or about to become operative in your state as well.
Charles E. Jack IV, MAI