In 2025, SLF Projekt d.o.o. prepared the civil engineering detailed design (građevinski izvedbeni projekt) for the seismic retrofit of the Evangelical church at Gundulićeva ulica 28 in Zagreb, an individually protected cultural property. The design details drainage, a barrier against rising damp, injection grouting and strengthening of the walls and vaults, a steel space truss in the attic and a steel truss in the bell tower.
