Janine, 45, who did not wish to provide her surname, moved into a two-bed flat in the block under a shared ownership agreement in 2009 and now pays more than £500 a month in service charges, when she originally paid around £100. She said the block was “designed for it to be affordable, but they’re not making it affordable, that’s the problem”, with leaseholders left owning a percentage of a flat which is “unsellable”.