We had one done, mainly because the company doing the valuation offered to do the building survey cheaper than most others quoted for a home buyers report (as they were already there).
Pluses and minuses, they highlighted a few things we’d missed like the conservatory walls aren’t tied into the main walls, but it’s not moved in 20 years so mehhhh and the garage roof felt might need looking at in the not so distant future. On the downsides, this then meant the mortgage people wanted indemnities against stuff that would probably never have been picked up in the valuation and the vendor wasn’t in a mood to negotiate on price, still no idea if we paid too much or got a bargain, we liked it, they dug their heels in and we paid the asking price pretty much.
There were already fairly recent electrical and gas certificates as it had been rented. If not I’d have considered those, especially as we bought it mid summer so still have no idea if the heating works.