The mayor has announced the first phase of a £100m housing fund which he says will support "thousands of jobs in the capital's construction industry".
This will see 27 organisations sharing £78m to build 3000 new homes across London supporting around 6000 construction jobs.
The homes will offer flexible ownership options, including low-interest equity loans, 'rent-to-save' and 'part-buy-part-rent.'
In total bids were received to the value of £209m from 42 different organisations such as housing associations, house builders, London Boroughs and new housing providers.
Barratt Developments received the largest single allocation, of £13.6m, followed by Notting Hill Home Ownership with £11.3m.
