This study investigates the Protoclassic ceramic production at Nakum, Guatemala, using it as a proxy to explore the nature of the transition from the Preclassic to Classic period (100/50 BC – AD 300/350) in Central Maya lowlands. Petrographic analysis reveals that household specialisation existed in the local production of slipped serving and utilitarian wares at Nakum. The recovery of locally made polychrome vessels further indicates that Nakum might have participated in a new network of cultural interactions and trade, enabling the community to sustain stable growth at a time when many major Preclassic sites declined.