How can I calculate a commercial lease buyout?

We have a well established and profitable business that currently leases space in a strip mall. This strip mall is in the process of being bought out by a developer. who plans to tear down the current building to put up a mixed use condo development. They are now sending out offers to buyout the current tenant leases. We currently have 7 years left on our lease. My question is how can we determine the current value of our lease?


commercial lease negotiation