Is a damp survey required?

I have damp in my hallway from what appears to be my neighbour’s blocked drain causing water ingress. The blocked drain was resolved at the beginning of the year and there hasn’t been further issues with damp. Previously there have been damp in other rooms, mainly front facing. I live a mile from the coast and we are prone to wind-driven rain. I think that my exterior rendering has seen better days. I am wondering whether to get a damp survey before contacting a company about a quote for exterior rendering repair.