Here's what I do know, Paragraph 10 of the PAR lease reads as follows:
67 (A) Tenant may move in (take possession of the Property) on the Start Date of this Lease.
69 (B) If Tenant cannot move in within days after Start Date because the previous tenant is still there or because of property damage, Tenant's exclusive rights are to:
71 1. Change the starting date of the Lease to the day when Property is available. Tenant will not owe rent until Property is available; OR
73 2. End the Lease and have all money already paid as rent or security deposit returned, with no further liability on the part of Landlord or Tenant.
Again, I think you need to speak with an attorney about this but, it COULD be that without a C of O, you cannot take posession of the property.... Looks like a potential out to me. I WOULD NOT speak to any code enforcement officer or anybody else before speaking with an attorney. The code enforcement officer may just say, "yea, you're not supposed to be there. Move out". Unless you're prepared for that, speak to somebody first.
I think, btw, that the landlord is in a pretty weak position. I've been a landlord for a long time, for a lot of tennants and I would NEVER let myself get in such a compromised spot.
Hope htis helps,
Their website is: http://www.astontownship.net/AstonGovSite/default.htm