Londoners will have exclusivity on low-cost new builds for up to a month within this period. London- and UK - based homebuyers will have exclusivity on low - cost new - builds worth up to £ 350,000 in the city , as 26 UK developers , including Atkins , Taylor Wimpey , Barratt London and Berkeley Homes , join an initiative led by London Mayor Amir Khan . Sales will be restricted to London buyers for one month and UK buyers for three months before marketing overseas . Research commissioned by the mayor 's office found half of new London properties purchased by overseas buyers were priced under £ 500,000 . Conservative MP Chris Philp has called for 50 % of all new property developments to be ring - fenced for UK buyers .
London- and UK - based homebuyers will have exclusivity on low - cost new - builds worth up to £ 350,000 in the city , as 26 UK developers , including Atkins , Taylor Wimpey , Barratt London and Berkeley Homes , join an initiative led by London Mayor Amir Khan . Sales will be restricted to London buyers for one month and UK buyers for three months before marketing overseas . Research commissioned by the mayor 's office found half of new London properties purchased by overseas buyers were priced under £ 500,000 . Conservative MP Chris Philp has called for 50 % of all new property developments to be ring - fenced for UK buyers .