Parkway Green and Willow Park Housing Trusts have merged to create Wythenshawe Community Housing Group.
This new parent group, which came into effect this month, will be responsible for almost 14,000 homes across Wythenshawe and provide employment to over 500 people.
Eddy Newman, chairman of the Wythenshawe Community Housing Group board, said: "I look forward to working with the new board and building on the existing skills and talents of our two trusts. Together we will be working for the benefit of all our tenants in Wythenshawe."
Nigel Wilson, chief executive of the Wythenshawe Community Housing Group, said: "The excellent track record of both housing trusts means that, together, we have a fantastic opportunity to invest in and benefit the entire Wythenshawe Community. The creation of a new group provides an exciting partnership which will benefit the tenants of both housing trusts and place Wythenshawe at the heart of social housing in Manchester."
The partnership is expected to generate savings of up to £2m a year.
The group's headquarters will be at Wythenshawe House on Poundswick Lane, whilst all other Parkway Green and Willow Park offices will remain open.