Lilian Grootswagers-Theuns is the owner of Erfgoed.nu, she advises governmental institutions, cooperations and private owners in heritage related issues. Speciality, monument legislation, grants, research, religious heritage issues, conversion, spacial planning and re use and redesign of heritage. Erfgoed.nu goal is to give heritage buildings a purpose in nowadays society. There for an integrated approach is a necessity. She is a council member of FRH *Future for Religious heritage, a non faith european wide organisation on places of worship. Vice chair of Task Force Toekomst Kerkgebouwen, a national and independent citizen’s movement in the Netherlands aiming to re establish religious buildings as living elements of the urban and rural landscape and communities. Author and publisher of several guidelines and handbooks on re use of listed buildings. Guest lecturer of HAN University of applied sciences: repurpose and Monuments module Cooperation (2011). Author of  Guidelines for Religious Heritage Gelderland (2009) “Oren van Steen” (2011) and “Future of our built history, guideline for re use ” (2014).