Updating buildings insurance cover.

[nothernexposure]

Not sure whether this should be in money or property section so apologies if wrong. Is there a fancy website or calculator somewhere to work out what the current rebuild costs are from an older building survey? I need to redo the buildings insurance but want to make sure I've got an accurate ish rebuild estimate.
TIA

calculator

The Association of British Insurers offers this calculator but it costs money to use it.

FYI: If your house isn't made of brick/concrete, has design 'features', more than 2 stories or is particularly large/luxurious then you're probably best asking a surveyor to do it as the normal price indicators won't apply.

Thanks, I've used the calculator and the figure looks pretty similar to the last survey. It's a pretty bog standard house so hopefully we're sorted.