The results of archaeological recording that took place during the construction of a residential housing estate at Carninney Rise, Carbis Bay, St Ives, Cornwall. This work was undertaken in compliance with a planning condition. The archaeological recording work at Carninney Rise identified two ditches that corresponded with geophysical anomalies identified in an earlier survey. The ditches contained frequent to abundant poorly sorted granite stones and the fills projected up to the base of the topsoil. The geophysical survey, misled by an error on the Historic Environment Record, wrongly concluded these were the ditches of a Late Iron Age or Romano-British enclosure. The excavated evidence, correlated with the historic map evidence, demonstrates theses are medieval field boundaries that were removed and rationalised in the post-medieval period but prior to 1839. There were no other finds or features.