During the credit crisis, real estate markets came to a standstill, causing the market value of real estate to fall. This caused problems in the financing of real estate portfolios by banks. The European Commission therefore formulated rules to support banks and introduced the “real economic value” concept. This concept was unknown and hardly elaborated on. Prof. dr. Tom Berkhout MRE MRICS conducted research, wrote two books, and published an accompanying guide for employees in the real estate sector.