Ecology Building Society is a member-owned UK building society founded in 1981 by people in West Yorkshire seeking finance for environmentally responsible building renovations and sustainable housing.1114 It began trading from a small office in Cross Hills, West Yorkshire, and is now headquartered at Ellis House, 7 Belton Road, Silsden, near Keighley.113 The Society is incorporated in England and Wales and is regulated by the Prudential Regulation Authority and the Financial Conduct Authority.12
Its core model links ethical savings with lending: members’ deposits fund mortgages for homes and projects that respect the environment, rather than lending being funded through wholesale money markets.15 Its mortgage activities include self-build projects, energy-efficiency improvements, retrofits, conversions, co-housing, community-led housing and other sustainable residential developments.1415 Commercial lending is available to charities, community groups, housing developers and other organisations involved in community-led or sustainable projects.4
Ecology also provides savings products, including easy-access, notice, regular savings and Cash ISA accounts.4 The organisation states that savings help finance sustainable homes and businesses across the UK.17 Its activities therefore have a national geographic scope, although its origins and headquarters remain in West Yorkshire.1112
Gareth Griffiths has served as Chief Executive Officer since 2022.13 The current board also includes Chair Louise Pryor, alongside directors Donna Francioni, Andrew Mulligan, Jaedon Green, Giovanni D’Alessio and Sameera Khaliq.14 The Society reported more than £31 million in new lending during 2025 and total assets of £347.9 million at year-end.4 Its public social-media presence includes LinkedIn and an Instagram account using the handle “ecology_building_society.”516