In reply to hutchm and Rob:
> (In reply to Ridge)
>
> Granny suck eggs time, but have you looked at your own title deeds closely? Your property might have changed hands around the time you mention, and the purchase price would be recorded.
Done the deeds thing, that gives purchase price a few years prior to that, but the re-valuation is due to alterations made after purchase. I actually need to find a similar 3 bedroom detached in my area and find what it was worth in 1991, so I'll have to knock on a few doors. (Given the area I live in that'll either mean I'll be kidnapped for my fresh DNA or shot for beign 'foreign'..)
> The best idea otherwise is, as mentioned, to visit the local library, look at the property pages of 1991 papers, and when you find a similar house, either visit the house and ask the purchase price, or request a copy of the title from the land registry (you can do this online.)
That seems the best bet, and Rob's suggestion about the Estate Agents section sounds good.