The firm will deliver a scheme of more than 200 homes at the former St Clement’s hospital site in Mile End, Tower Hamlets.
London Mayor Boris Johnson is expected to confirm the appointment today as he delivers on his pledge to create community land trusts in the capital.
CLTs provide a new model of more affordable housing by transferring the freehold of the entire site to non-profit making local community groups. This enables housing to be sold or rented at affordable rates because land values are excluded from the price.
Some homes will be directly owned by the East London Community Land Trust and residents will be involved in managing the future neighbourhood.
The announcement marks the completion of a long tender process, administered by City Hall, which saw several developers including Carillion and Igloo compete for the 4.5 acre site.
Although not initially part of the same bidding team, local residents, through the East London Community Land Trust, and Galliford Try have been in negotiations since March this year about the possibility of working together, after both their proposals impressed the Greater London Authority.