How to internal wiring?

want put extension upstairs ,
trouble how wire down stairs through stairs , eat run along skirting boards drill holes other side of 1 room ? can't run through door or door won't shut !
ideas ? it's quite big house lots of rooms

i want put extension upstairs , trouble how wire down stairs through stairs , eat run along skirting boards drill holes other side of 1 room ? can't run through door or door won't shut ! ideas ? it's quite big...

Home & Garden Do It Yourself (DIY) Next