If my neighbour signs the party wall agreement outside the 14 day period is it still valid?
My situation is that I issued the party wall agreement back in June and it was signed by the lady next door. Now, months later, it turns out her ex owns the house and he did not sign it. Can he sign the same form so I can commence work ASAP or do I need to re-issue a new party wall agreement to him and wait another 2 months?