Amidst declining agricultural productivity, farm level efficiency and persistent food security problems in Africa, land fragmentation is emerging as a key empirical and policy question in the region. In this paper, a novel approach is used to estimate the effects of land fragmentation. Quantile Regression-Based Thick Frontier (TFA) is applied to show how the overall change in landholding affects production efficiency in production. Applying cross-sectional survey data from Kenya, the results showed that the least efficient group of maize farmers in Kenya were those with the small average land holding attaining a maximum output of 70% of the actual attainable output. In terms of scale of production, the least efficient group fall short by 58% compared to their large scale peers. This approach is semi-parametric requiring few assumptions with simplified figures easy for policy communication.