£240k is a lot for a first house in Bristol. My old 3-bed Victorian terrace would be worth about £200k now, and it's in a middling-decent area (Fishponds). It was great (still miss living there).
If they're buying in Clifton or Redland or somewhere, then they'll pay a lot more. Presumably they're not, though, since it's a new home. If it's in Bradley Stoke or similar massive development, then they're paying a lot to live in such a hellish, soulless maze(I laugh, but it really is awful)
The house is in Lyde Green. I confess i don't know Bristol at all so i don't know if thats good or bad! Its not the area that worries me. Its the finances of it all