In april 2019 the team of ShoreScape (University of Delft & Twente) has placed a sand-catching installation on the beach of the Sand Motor, below The Hague. The installation investigates the effects of beach buildings on sediment transport. Recreational beach development increases along the coast, and causes obstruction for dune formation. The natural growth of dunes is important to keep pace with sea level rise. Via scale models the effects of beach buildings are investigated, including the effect of different elevations and settings. The results will be used to compose design principles for dune friendly ways of building.