The Enquirer understands that around 30 staff are facing potential redundancy in the move at the firm which is part-owned by Willmott Dixon.
EcoWorld London will now tender future developments to main contractors.
Malaysian owned EcoWorld London was created in 2017 after Willmott Dixon agreed to sell a 70% stake in its London-based residential development business Be Living to EcoWorld International.
Willmott Dixon owns a 30% stake in the firm which is delivering thousands of homes across London and the South East.
EcoWorld London said: “EcoWorld London recently took the decision to restructure our delivery operations.
“This was a strategic move to enable greater flexibility in our operations and to better align with our ambitious plans to deliver significant long-term growth.
“We will be consulting with our staff over this period to ensure that they receive the support they need as we go through this process.
“EcoWorld London remains committed to delivering much-needed homes across London and contributing to the industry and the capital’s recovery.”