Following the reforms of doi moi, household farms in Vietnam are being affected by policies which are implementing land, financial and trade reforms. The nature of agriculture in Vietnam is such that household farms operate within and are constrained by the activities of their location within a village. Modelling household farms to analyse the effects of changing policies needs to account for the spatial links between farms in relation to labour, inputs and produce, and the constraints that operate on production decisions in the context of a village. In this paper we develop a conceptual household model of Vietnamese farms at the village level, to develop a simple economic model of a village.