Plans have been submitted to transform the old visitors' centre at Holloway Prison into a 24-hour winter homeless shelter for 25 people.
Housing Association Peabody, which bought the site from the Ministry of Justice earlier this year for £82million, wants to use the first floor of the building as a shelter for six months while it prepares its application to redevelop the land.
The planning application says it is hoped the shelter will open next month or in December, once a charity provider has been selected.