From April 2013, Interserve will be looking after East Thames’ 13,500 homes. The initial £100m contract runs for seven years but there is a provision to extend it to 15 years.
The outsourcing deal is expected to save the landlord as much as £4m a year.
Interserve is promising local employment and training opportunities on the contract.
Interserve executive director Bruce Melizan said: “Delivering front-line services for East Thames is strategically important to us at Interserve, as it affects local residents’ homes and their quality of life. The fact that East Thames has given us an opportunity to share our knowledge and experience in delivering residential repairs and maintenance with them is a strong endorsement of the value and quality we can bring to their estate.”