I think that is usually done through bonding, and I would have to imagine that something like that would be in city or county building codes.I think the one fair thing to impose would be to make the owners have an insurance policy so that if the construction stops or if it bankrupts there is a fund to demolish it. Cause at that point I would be piised if I was universal if there is a 600 foot rusting pole just waiting to be blown down by a hurricane.