Surveyors can potentially be liable for issues which 'should' have been evident in a survey but aren't, hence every survey being as much an exercise in behind covering than a accurate evaluation of the state of the house.
In theory, I suppose a boundary wall could at some point along it's length hold water and allow ingress to the walls through capillary action, or, should next doors walls have be damp, 'bridge' some of that that moisture over to your walls in a manner you can't control. In practice if the interior walls look fine, I personally wouldn't bat an eyelid at it.
Surveyors can potentially be liable for issues which 'should' have been evident in a survey but aren't, hence every survey being as much an exercise in behind covering than a accurate evaluation of the state of the house.
In theory, I suppose a boundary wall could at some point along it's length hold water and allow ingress to the walls through capillary action, or, should next doors walls have be damp, 'bridge' some of that that moisture over to your walls in a manner you can't control. In practice if the interior walls look fine, I personally wouldn't bat an eyelid at it.