Yes, I think one has to assume that, even though BAS will keep reminding us (technically correctly) that adherence to this guidance is not necessarily required in order to achieve compliance with the regs.
Well, it's more, really, that the first thing they say, after the copyright info and edition history, i.e. the very first thing they say which is relevant to the actual content (and which is printed in bold type, I would have you note) is a disclaimer which says that whilst they
think they are right it's down to the reader to satisfy themselves that they are, and that if they aren't right, even through gross incompetence, negligence, or deliberate misrepresentations, it's not their fault if you suffer through having taken notice of it.
Yes, of course the lawyers have been at work, but basically what the disclaimer says is that you cannot trust a single word which they have written, and that you must, if you wish to comply with the Regulations, read the Regulations yourself and make your own determination of what they require.
... and you would have to question how a domestic premises could possibly be considered to be under the effective control of a skilled or instructed person - unlike a workplace.
As JohnW2 says, in
my house, and
his house, it is perfectly reasonable to say that in the context of people drilling into walls there is a skilled person in control who can be relied upon to instruct others where they may or may not drill.
As for future people, no matter what plans either of us would have for making alterations before a planned departure, there is always the legendary bus which runs us over to be considered. But given how often people deride the concept of "safe zones", particularly the corner and ceiling ones, it's not unreasonable to suggest that if you are going to admit cables concealed there you could equally admit cables concealed elsewhere as long as they were adequately documented.
I would have been inclined to think that it would be easier to effectively 'instruct' the head of a domestic household (presumably the person 'in control of' it) as to where all the concealed cables were within that house than it would would be to instruct someone in a (perhaps very extensive) commercial /industrial workplace about the same matters.
Except the latter can have defined policies and procedures (apologies to ISO 900x devotees - I cannot be rsed to remember the difference
) which force people to go and find the documentation.