Hundreds of people have penned letters to Fife Council urging it to block the construction of 1,480 homes around the northern edge of Cupar.
Campaigners fighting the proposal of a trio of developers handed over 360 objections and many more have been sent independently.
While Monday is the deadline for public consultation on the planning application by Cupar North Consortium, Campaign Against Cupar North spokeswoman Gina Logan said: “This is just the beginning of our campaign.”
Expansion of the town has been on the cards since land known as Cupar North was allocated in Fife Structure Plan a decade ago, with a relief road funded by developers.
It was only in December that a planning application for the houses, bypass, a school and commercial and leisure uses was submitted by the consortium of Permisson Homes North Scotland, Headon Developments and Vico Properties.
Mrs Logan urged the council: “In 2006 Fife Council ignored the fact that 90% of local residents attending a consultation on Cupar North indicated their opposition.
“Please do not let this happen again. It has been proved that there is no need for a bypass, therefore no need for 1,500 houses to pay for it.
“We do need houses in Cupar but in the right place and the right number.”
Support for the scheme has, however, come from a planning consultant who lives in the town and was deputy director of planning in north-east Fife during the 1970s.
Desmond Montgomery said Cupar was no longer the thriving county and market town it once was but remained an attractive place to live.
He said: “There is no doubt in my view that the physical expansion, which has taken place together with the incoming population, has been hugely beneficial for the prosperity and social and economic diversity of the town.”
Predicting the population would rise by around 3,500 if the houses are built, he said: “The economic benefit from new development and increased population will help to support retail businesses in the town.”
Mr Montgomery said Cupar was the only Fife town with an arterial road through its heart and a relief road was an absolute necessity to attract retail, leisure and tourism.
He said: “In particular, heavy traffic, HGVs, farm traffic and transporters, which frequently block the narrow Bonnygate placing pedestrians at serious risk, must be removed.
“Without the congestion, pollution and danger from heavy traffic, new opportunities will emerge to improve the physical town centre environment.
“If the northern development is not ultimately approved, future generations will look back and wonder why the opportunity was missed to create a relief road which has been a proposal of successive development plans since the mid-1950s.”