The project will use a van currently owned by the company. Although the van is not currently being used by the company, it can be rented out for $15,000 per year for five years. The book value of the van is $20,000. The van is being depreciated straight-line (with five years remaining for depreciation) and is expected to be worthless after the five years. 

 

Would this be considered opportunity cost? If so, is the depreciation and book value irrelevant ?