Villagers are being urged to oppose a plan to build up to 80 houses in Islip.
Outline planning permission is being sought for a development of up to 80 houses in the field opposite Toll Bar Road in Islip.
The plans, submitted by Catesby Estates Limited, also include provision for public open space and a play area.
But residents who are unhappy about the prospective development are urging others to do what they can to prevent it.
Leaflets have been delivered throughout the village which say that if the plan is given the go-ahead, it sets a precedent for other greenfield land to be built on.
It also voices fears over the effect such developments will have on school and GP surgery places.
The deadline for people to make comments on the application is December 31, with residents being urged to contact East Northants Council, which will decide on the application, before then.
Among the areas of concern to campaigners are the negative effect the houses could have on the character of Islip, the lack of amenities there and in neighbouring Thrapston, the lack of public transport and impact on local traffic, and that the plan is not in accordance with relevant policy.
Residents can email or write to the council, quoting planning reference number 16/02345/OUT, as well as MP Tom Pursglove.
Volunteers from the Save Islip group will also be knocking on doors for signatures to a petition.