How to create lots of consumer wealth in the UK

I wasn't going to try to use personal stuff in here, however......
In trying to move house recently, I noticed that indemnity liability is rife within the housing market, where the slightest error in building regs seems to require insurance up to the value of the house!
Talking to people in the industry and in our 'chain' it appears that about half or moves require this nowadays and at £100-£300 a pop this builds up into a multi billion pound industry [especially as it seems that none of these policies are ever excercised] lots of profits for the banks etc
Why cant the govt just enact a bill saying that if a property has had building on it over 10 years old then the council can do nothing about it ? Dead simple, dead cheap but a major blow to the banks [boo hoo]
Come on Brown show us your stuff !