The standard is a single hole in a wall, 15 metres of cable and installing on a wall. Extras scope from a few more metres of cable up to digging trenches, creating fixing points, upgrading the supply to the house. The cost can go north incredibly quickly but you will need the survey to understand exactly what needs doing.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark