Good afternoon. We have done work for the City of Minneapolis and for the VA in Minneapolis- including some market studies. While I am happy to indicate that the upper end of lease rates in Bloomington significantly exceeds $13K/year, I can't tell you what the fair market value of a rooftop is near 35W or any specific location without evaluating the exact location and the availability of other alternatives to the provider. Furthermore, would need to know what type of antenna and for whom- that will impact values significantly.
If you would like further details on how we can help review this situation (and whether it is worth it to you to even consider engaging us) please contact us
and we will be happy to do a quick review of the situation and let you know if a more in-depth review is needed and what it might cost.