What you are saying is all well and good, however the APWC and the FWC seem solely concerned with member benefits.
If I was a punter I would want to know what benefits I would get be employing an APWC or FWC member, at present I can see no benefit to the domestic customer. The only thing the customer will see is an extra cost compared to their local cleaner, who has done a decent job for years!
Yes the commercial customer will recognise that they are covered in case of damage, but what else? Nothing, because nothing else is asked for.
The only nationally recognised trade associations are CORGI for gas fitters and IEEE for electricians, as far as I am aware there is nothing nationally recognisable for most other trades, ie joiners, plasterers, roofers, carpet cleaners, general cleaners, window cleaners, etc, etc and personally I doubt there ever will be.
Why? because what we do does not normally endanger the customers life, unlike working with gas or electric.