Concerns have been raised about proposed housing on green belt land which campaigners say will close up the last remaining countryside between Keynsham and Saltford.
Developer Mactaggart and Mickel has submitted a plan to Bath and North East Somerset Council as part of the local authority's core strategy consultation.
It means hundreds of homes could be built on land to the south of the A4, between Grange Road in Saltford and Minsmere Road in Keynsham.
Resident Bob Elcome-Thorpe, who lives in neighbouring Teviot Road, Keynsham, said he understood that the area needed more homes but did not believe these latest plans were being properly thought through.
The 65-year-old said: "Keynsham needs housing, there are no two ways about it, but clearly there are ways of doing it and plonking 250 homes into a site that has restricted access and traffic problems is not right."
Mr Elcome-Thorpe said the area's roads, including the congested A4, could not cope with that number of extra houses and that the development would see residents losing much-used recreational green space.
Local councillors have also expressed concerns about the plans and said they will be pressing B&NES to reject the proposal outright.
Councillor Marie Longstaff (Con, Keynsham East) said this latest move came just months after a successful local battle to stop the council earmarking green belt land around Saltford for around 5,000 new homes as part of the core strategy.
She said: "Residents will be horrified that the prospect of effectively merging Keynsham and Saltford with new housing has once again reared its head.
"We have successfully fought against such a proposition before and we will continue to campaign against such a damaging plan."
Councillor Mathew Blankley (Con, Saltford) added: "The green belt which stretches from Hicks Gate along the A4 to Bath is there specifically to prevent Saltford and Keynsham being swallowed up by a Bristol and Bath conurbation.
"Residents value the openness of this land, which protects the distinctiveness of our local communities. We will simply not allow for this land to be bulldozed."
B&NES Council's core strategy consultation ends at 5pm on Friday. For more information go to the core strategy section of www.bathnes.gov.uk.
