My neighbours had a major extension built and when they were planning it I put a couple of suggestions to them: get network cabling installed, so at a minimum WAPs could be installed; have alarm cabling installed.
Their builder and his electrician persuaded them it was a "waste of money" ... an extra £500 in a total bill of £250k! Neither of tehm are technically minded. So nothing was done. I could have wired for both in under a day including fitting network points and a patch panel.
That is the attitude of builders ... save pennies and cost the buyers lot of pounds later.
They have now asked me for help - throughput from their ISP router and WAP is abyssmal and coverage poor. A couple of temporary fixes so far and I'll tackle the rest soon.
They had an alarm installed - mainly wireless which was probably well over £250 more on sensors, plus £80/year on batteries and fitting. Then the cost for basic wiring - if they used network engineeer/installer it will be well over £1000 although my charges may be a little less
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