Ecology Building Society provides ethical savings accounts and green mortgages for properties that benefit the environment. The prime focus of the Society is to promote an ecological approach to the built environment in the UK, and thereby foster sustainable communities. We seek to minimise energy use and waste in both our office and business practices. Our mortgage product range includes: C-Change Discounts for residential borrowers, which offer a 1.25% discount off our Standard Variable Rate for Passivhaus certified homes for the lifetime of the mortgage. Small Scale Development Loans and Commercial Mortgages for developers of Passivhaus standard properties.