If you are lucky, 2 people turn up & say 'where do you want it, m8'
you say 'come in, I'll get a brew on & show you'
- provided you don't have issues like needing to go too high, e.g. into loft space, long runs, (as mentioned above), etc - you 'should' be ok.
I have one cable set coming straight in the front of the house, and the other going round the outside to the upstairs back bedroom, internal cables are clipped to the skirting.