The lease market is not very centralized. There was a place called RAM asset management that tried to be a lease broker, I don't think they still exist. I few real estate brokers do a little of it, you can also find leases on Craigslist, etc. sometimes. It appears that finding tenants if you have land to lease is much easier than finding a lease. In central WI, there was a guy who put a lot of signs up in local bars that he was looking to lease, but I don't know if he had any success.