Hi. That house again will have floorboards from left to right of house (main board running along landing) also remove a section of floorboard below window above the porch you will see we’re cables needs to go
sounds like work but with the right tool it’s only an hour or so .... a tool worth adding to your box is one of these set to floorboard thickness makes the job easy
https://www.diy.com/departments/skip19d-worx-400w-85mm-compact-circular/1212911_BQ.prd
once you have a few jobs under your belt it will all click into place just treat every house as your own