I was 'drifting' the 'Temporary Outside Tap' thread too much with my questions about accumulators so I though I'd start a new one (but I don't know how to link to that existing thread - soz).
The flow from my 3/8th" main is 15lts/min at 4bar which wise counsel advises me is a bit puny and the advice was 1 or 2 accumulators situated outside of the house to give me the boost I need. I've agonised over where to put the accumulator/s and am now thinking of going ahead without using an accumulator initially and then retro-fitting one when it becomes obvious it's required.
After the house is built we will apply for planning for a garage (we've been advised to wait that long) which would be a suitable location for the accumulator/s so the question is, how would I go about having the plumbing done with the ability to add an accumulator with ease at a later date that will be situated in a garage that as yet doesn't exist - mind you, neither does the house yet1