It's worth having a read of your memos and articles as well. If you don't have them, you can get them from the CRO website for about €10. It may mention what happens with vacant properties and developer possession. I think in your capacity as a director it would be reasonable to request proof of what he says is in his agreement. If it is in his lease, the Mngt Co. has no right to alter it. The AGM could be used to make amendments to house rules, company rules, etc but not (afaik) an individual's lease.