Central Southsea Councillors Lee Hunt, Suzy Horton and Phil Smith were delighted to secure the funding to enable a dropped kerb to be installed outside Cornwell Court in Haslemere Road.
The works were completed last week.
Ward Campaigner Steve Pitt said: "It's fantastic that this has been achieved. It might seem a simple thing but it will make a real difference to the residents in terms of their mobility. If our local Councillors hadn't campaigned for this, it wouldn't have happened."