Following Mainstay’s acquisition by FirstPort in 2020, Mainstay Residential is now managed under the FirstPort brand.
This exciting change means Mainstay customers will benefit from the additional skills and expertise of FirstPort’s in-house specialist teams and systems, including the new online customer account, My Home.
Please note that Mainstay’s professional services, such as asset management, commercial facilities management and back office and accounting solutions continues to operate independently, with further information here.


For customers with an account number beginning with a number and ending with a letter (10 characters in total), you are unaffected, and can continue to access your account in the same way as before, please click here.