Research from property website OnTheMarket.com has found that upgrading from a two bedroom to a three bedroom house costs an average of £68,376 across England, Scotland and Wales, an average of 29%.

Buyers looking to make this move in Outer London face the highest additional cost of £109,616 or 26%. In this region, a two bedroom house costs £415,208 and a three bedroom costs £524,824.

The largest uplift in percentage terms is the South West where the cost of upgrading from a two bedroom to a three is 36%. The price jumps from £224,585 for a two bed to £304,444 for a three bed with the cost difference at £79,859.

The smallest percentage uplift is in Inner London where it is 10% more for a three bedroom house than a two bed where, on average, a two bed costs £707,424 while a three bed is £779,816.