I'm moving house next weekend but got the keys early so spending the evenings moving my smaller items across (house is on the same complex about 20m away from current house) before the furniture gets moved on Saturday. Two cats being naturally nosy following me across which is fine as they have explored the new house and approve
It's a townhouse with parking on the ground floor, external steps at the front to the front door and a balcony at the rear with a spiral staircase/fire escape type thing.
Shifted a load of things over last night, locked up new house (leaving one cat on back balcony) and went home. No sign of said cat this morning so went over to new house panicking in case I'd locked her in but oh no, there was bimbo cat where I'd left her - absolutely frantic and obviously incapable of navigating a spiral staircase 
How this cat has reached 11 years of age I'll never fathom, absolutely nowt between the ears 