Sitematch London has been shortlisted for the Regeneration & Renewal annual awards, which celebrates the best regeneration projects in the UK.
The Greater London Authority's land and property unit has agreed to take a reduced fee from a housebuilder for one of its sites in order to stop Transport for London scuppering the plan.
More councils have added details of development sites in their boroughs to Sitematch London over the past month.
Sitematch London has added 36 sites owned by national government departments to the site.
Sitematch London is helping international investors source new development opportunities during the 2012 Olympic Games.
Three more sites in Havering, all owned by the Greater London Authority, have been added to the Sitematch London database.
Sutton Council has found a buyer for one of its key development sites.
A government task force has recommended 'lending' developers public sector land, and free them from building affordable homes in private rented schemes, according to a report.
Ealing Council's director of property and regeneration Brendon Walsh is moving to Hounslow Council to take up a new role.
The government's regeneration quango will spend the next year getting surplus land owned by departments ready to be sold, it says.