Improvements could be made to the Westway gypsy traveller site which straddles Kensington and Hammersmith and Fulham.
The Westway site in North Kensington is on the borders of both Kensington and Hammersmith and Fulham and houses 39 families living on 20 pitches.
The Westway Travellers Site Advisory Group, which has councillors from both boroughs as members, meets on Tuesday to discuss trying to win government cash to pay for the improvements, which could include widening footpaths and access to it as well as enlarging it from its current size.
Kensington failed in a previous attempt to get money for the site but have now called in professional consultants to make sure they are successful this time round when bids are submitted this summer.
The councils have carried out air quality and noise assessments of the area, which is overshadowed by the Westway and West Cross Route motorways.
Now the advisory group wants to consult the community living there to find out their needs are, ahead of completing the bid to the Government's Homes and Communities Agency.
An independent report, called the Gypsy and Traveller Accommodation Needs Assessment (GTANA), recommended last year that the site be expanded but so far councillors have held back from committing themselves to its findings.