Although mainstream economics says that farmland values are determined by the discounted stream of returns, many researchers have identified non-agricultural attributes of land that significantly contribute to its value. It is claimed that in sustainable agriculture, an increasing proportion of the value of land is explained by amenities. It is necessary to consider whether the neoclassical RDM remains applicable to the valuation of farmland. The main aim of this work was to test RDM of Saphiro–Gordon type for farmland prices in Poland. It was found that in spite of changes to the CAP, the RDM continues to perform well.