The contest will mark Berry’s third attempt at the mayoralty having stood in both 2008 and 2016, when she also successfully stood as a London Assembly member.
Addressing party activists, Berry unveiled plans to create a People’s Land Bank to “empower” communities to bring empty buildings and land back into use.
She said: “London Greens listen to what Londoners need and we act on it. That’s why we believe everyone in London should have an affordable, secure and warm home.
“But across the capital empty buildings like office blocks and car parks are left unused – while Londoners struggle to pay the rent or wait for years to get social housing. That isn’t right, and we have to start planning now for how we bring these underused spaces and empty land back into use.
“A Green Mayor would give Londoners control over how our city develops to provide the homes we need with a People’s Land Bank, which would empower communities to find land and buildings currently going to waste and choose how to bring it back into use.
“The Green Party has the answers to London’s biggest problems and we’re the only party Londoners can trust to deliver on its promises.”
In addition to being selected as the party’s mayoral runner, Berry also heads its list of 2020 London Assembly candidates, effectively ensuring her return to City Hall following the election.
In second place on the list is her fellow Assembly member Caroline Russell.
Full list of Green Party London Assembly candidates:
Sian Berry
Caroline Russell
Zack Polanski
Benali Hamdache
Gulnar Hasnain
Dr Shahrar Ali
Rosamund Adoo-Kissi-Debrah
Ben Fletcher
Scott Ainslie
Hannah Graham
Peter Underwood
