The Government says the plan to extend permitted development rights will cut red tape and increase the number of new homes - but there are concerns about the impact on neighbourhoods.
Over the past seven years, the average property sold in London has risen in value by just over 13% - compared to 35% in the UK as a whole. Is it time for buyers to get a good deal?
Properties with number one on their door have the highest average value, coming it at £354,793, which is £40,000, or around 11 per cent, more than number 13s, Rightmove said.