Online guide to building etc costs

[pineapple]

I found this guide online.
http://www.checkyourprice.co.uk/building-installation-cost/index.php#buildingremovalcosts
How realistic do you think it is? There is a limit to how much I can do myself so trying to get a rough idea before the quotes come in (from 3 recommended contractors).
I'm in Cumbria near Kirkby Stephen.
Cheers

 

[PrenticeBoyofDerry]

I don't think it is a million miles out!
I am sure windows and doors are cheaper to have signed off.
Last time I had to go through that process it was £100 for 2 doors (one a patio) and 7 windows.