You’ll want CDMAEng to answer this. Here’s what I know.
From my understanding, you can get between $400 and $4500 a month, depending on the location, zoning situation, and size the of equipment they want to put there.
From an engineering perspective, location and altitude are everything. Not high enough and it won’t work. Usually, too high is bad because the antennas will spray signal all over the place. Sometimes high is good, though so it really depends on the engineering need.
From a deal perspective, the easier it is to get a site approved, the more valuable it is. If you have a million homeowners, committees, etc in the review process, Verizon will be less happy.
A third thing to consider is that carriers are willing to pay for exclusivity. If Verizon wants it, so do the others. If you plan ahead, you can get three or four clients up there, or charge the highest bidder a ton of money for the exclusivity.
You may even consider buying someone like CDMAEng an all-expenses paid weekend in beautiful San Bernardino and have him look at Verizon’s situation out there, look at your land and let you know if it is just another hunk of land or something very valuable.