You are assuming that all real estate owners are paying taxes.
Also, in blighted areas buying improved land may actually be discouraged by LVT because of demolition costs. Thus vacant land should be more valuable than improved land. Can you resolve the paradox?
Two identical pieces of land, both pay the same in taxes, one requires more work to improve it (as it needs a tear down first). So that piece of land will sell for a lower price than its neighbor.
Also, in blighted areas buying improved land may actually be discouraged by LVT because of demolition costs. Thus vacant land should be more valuable than improved land. Can you resolve the paradox?