I'm confused. What is the construction material of the house you are thinking of buying? And how old is it?
A timber framed house is not built of wood - the frame (bare bones) is wood, and it is then clad in another material - usually brick.
Very old timber frame houses had noggins (like in-fill) of brick - you still see these occasionally, and you can see the original timber. Modern houses are very different.
Imagine building the frame of timber, putting in all of the pipes etc, then you fill it in with insulating material. You clad the outside in brick, or stone (or very rarely something else) and you finish the inside with boards of some kind (plaster boards or modern equivalent such as Fermacell).
If the house you are buying is relatively new, it will have some sort of builders' warranty.
I am having difficulty in seeing what you mean. Your question about 'holes for pipes and wiring' makes me wonder if the house you are thinking of buying is completely built of wood - rare, but not unknown in the UK. If so, it is very different to a timber frame, and what I (and some others) have written does not apply.
Happy to answer more questions if it will help.