-
Cost for a pro to do the survey is peanuts compared to cost of house purchase, conveyancing etc.
Time taken for survey is -- I would imagine -- very little compared to time taken to find house, move etc.
I'd suggest you're overthinking this and should get a pro to do a survey, having explained to them exactly what you eventually intend to cut/drill/modify/remove. Not sure there is any benefit to trying to rush through this but there is clearly potential for risk as you've identified. I'd trust an independent expert over a bunch of people on the internet who haven't and won't see the situation in person.
Edit: @spotter 's approach seems sensible
We can't do the proper invasive survey (presumably more expensive) until we own the place because it involves holes in walls etc.
With this more expensive one it still specifies certain areas (which came up from our building survey).
But there are two main areas: Artex walls and ceilings (almost certainly asbestos) and polystyrene ceiling tiles (hopefully not).
We want that survey ASAP really because I want to rip the ceiling tiles off as soon as we get the keys.