Thanks! I don't work at all with this type of data though (I'm a physicist), so my interpretation of it will be mostly guesswork I'm afraid (though I welcome le

Thanks! I don't work at all with this type of data though (I'm a physicist), so my interpretation of it will be mostly guesswork I'm afraid (though I welcome learned comments!). The divergence in house prices seems to be real, and would correspond to the historically high 'Gini' coefficient of the price distribution. This seems to have been falling recently however, which might represent a turning point in the price divergence.