The plans, submitted by homebuilder Manor Oak Homes, sought outline consent for up to 400 homes, and included a two-hectare site for a new primary school.
Associated vehicular, pedestrian and cycle access, car parking, and open space was also proposed on the site in the village of Kibworth Harcourt.
Harborough District Council’s planning committee refused the plans at a meeting yesterday, in line with a recommendation from planners.
The planning officer’s report said the Kibworth area had met its 2019 local plan housing allocation, with policy in the plan allowing only additional minor development "adjacent to the existing built form of the settlement".
The report said the proposal for 400 homes was considered by planners to be major development and would not be in conformity with the local plan and an adopted neighbourhood plan, which does not allocate the site for development.
Planners also advised that the council is able to demonstrate a 7.04-year housing land supply.
The report acknowledged that the applicant had committed to ensuring that 40 per cent of the homes would be provided as affordable housing, in compliance with local planning policy.
But planners also advised that the applicant had "not undertaken detailed traffic modelling to understand the specific impacts at local junctions affected by the development".
The report concluded that "insufficient evidence" had been provided by the applicant "to fully assess the impacts of the development on the surrounding landscape, surrounding highway network and the nearby air quality management area."