The main aim of this report is estimation the effectiveness of land consoli-dation projects realized after getting access of Poland to the European Union (year 2004). It contains research results, which were based on a representative sample of 12 objects - villages, where consolidation works were done. They are located in different parts of Poland - proportionally to the amount of achieved works.The estimation of partition layout of investigated farms was based on data from maps and plot registers obtained from the district authorities.The estimation of profit level as consequence of partition layout was made as follows. The investigations cover 300 of farms registered in Polish FADN in Mazowsze and Podlasie region. For plant and mixed plant-animal farms, the plot-to-homestead distance and the profit have been obtained and put into statistical analysis.The effectiveness of land consolidation was estimated basing on the internal refund rate method (IRR), according to rules proposed by Trocki and Grucza.Basing on the results of investigations, it has been ascertained that land consolidation gives the following effects:- Decrease of plots per farm by 48,9%, Increase of area of plot by 95,0 %, reduce of plot-to-homestead distance by 24,6%;- Growth of profit by 12-43,8%, Annual internal refund rate ...