Spotted on HarringayOnline is news that Haringey Council will no longer send you a letter informing you when a neighbour has lodged a planning application. So until recently, if a near neighbour was planning a loft conversion or extension, for example, the council would write to you letting you know so you could comment on the application if you wished.
Haringey's website says:
In line with the 2017 Revised Statement of Community Involvement consultation letters will no longer be sent for planning applications as of 1 June 2017. Where there is a legal duty to consult a site notice will be placed at each site.
Local groups can also sign up to receive notification of planning applications via email, and they can also use the Notiz smartphone app to receive notifications straight to their phone.
So this means keeping an eye out for notices pinned to trees, buildings, fences etc.