The report presents a summary and preliminary discussion on the work carried out by the Swedish Institute at ancient Kalaureia between 2015 and 2018 in Area L. The excavations were focused on this area with the hopes of gaining a better understanding of the settlement which was situated south of the Sanctuary of Poseidon in antiquity. The excavations show that a large building was constructed probably around the middle of the 4th century BC in the western part of Area L. The full outline and functional use of the building has not yet been fully established but the building seems to have been in use in several subsequent phases. The excavated remains further suggest that dining activities were carried out in the southern part of the building. A stone laid feature (Feature 3) excavated immediately to the east, together with charcoal deposits, also provide indications of cooking in the 3rd century BC at least. The feature was, however, covered by the 2nd century BC when a new wall was constructed which seems to connect the building with a broader structural complex to the south. During this period parts of Area L seem to have been used for olive oil production, identifiable through archaeobotanical remains, multiple pithoi, and a press installation excavated in the central part of Area L. In the Late Hellenistic to Early Roman phase (either in the 1st century BC or 1st century AD) much of the building complex was again covered by a new construction fill, raising the level of the building.