The survey I've recently had done on the house I'm buying suggested the wireing and fuse box are old and should be updated, so rather than pay for a PIR I went and had a look and the surveyor was correct the fuse box is an old brown wylex unit from the 1960's there is a mixture of blackrubber, cloth covered and more modern grey pvc wire (possibly done when the extension was built)and nearly all the sockets are mounted in the skirtings. Is it resonable to say the house should be completely rewired with new split load consumer unit etc because the vendor doesn't believe me when I told him what needs to be done. He's under the impression that if every thing works then it's fine, I tried in vane to explain about current regulations but he's not interested. I even told the guy I could do the work (16th edition qualified building control informed etc)at much reduced cost to him but he's not interested, I think he's being unreasonable, what do you think.