Ecology Building Society
Building SocietyEcology Building Society is a specialist green lender dedicated to supporting sustainable and ecological building projects across the UK. It provides mortgages for energy-efficient homes, eco-renovations, and self-build projects, making it a unique choice for environmentally conscious borrowers.
Visit Website
About Ecology Building Society
Ecology Building Society was founded in 1981 and was the UK's first building society to focus on environmental lending. The society has its headquarters in West Yorkshire and operates as a mutual with no shareholders. Ecology's mission is to build a greener society by lending on properties and projects that benefit the environment.
Ecology offers mortgages for energy-efficient new builds, eco-renovations, self-build projects, and properties with ecological features. The society uses its lending to support sustainable construction, renewable energy, and environmentally responsible property development. Ecology has strict lending criteria focused on environmental impact.
Ecology Building Society is regulated by the FCA and PRA and is a member of the Building Societies Association. The society remains a niche lender but has grown steadily as demand for green finance has increased. Ecology appeals to environmentally conscious borrowers who want their mortgage to support sustainable housing.
Lending Focus
Ecology Building Society offers mortgage products across 2 categories including Residential, Self Build.
Key Features
- UK's only dedicated green mortgage lender with ecological focus
- Self-build and renovation mortgages for energy-efficient and sustainable projects
- Discounted rates for properties with high energy performance ratings
- Lending on non-standard construction types including straw bale, cob, and earth sheltered
- C-Change discount rewarding improvements in a property's energy efficiency
Pros & Cons
Pros
- UK's only dedicated green mortgage lender — unique in the market
- Lends on non-standard construction types that other lenders refuse (straw bale, cob, earth sheltered)
- C-Change discount rewards energy efficiency improvements with lower rates
- Self-build mortgages tailored for sustainable and ecological projects
Cons
- –Maximum LTV of 85% — requires a larger deposit than most lenders
- –No buy-to-let or commercial mortgage products
- –Maximum loan amount capped at £1 million
Fees & Charges
- Arrangement Fee
- £995 or fee-free options on selected products
- Valuation Fee
- £250–£1,000 depending on property value and type
- Early Repayment Charge
- 1–3% during the initial deal period
- Overpayment Allowance
- Up to 10% per year without charge
Mortgage Rates
Rate data coming soon. View rates on Ecology Building Society
| Product | Initial Rate | Type | Initial Term | Revert Rate |
|---|---|---|---|---|
| 2 Year Fixed | TBC | Fixed | 24 months | TBC |
| 5 Year Fixed | TBC | Fixed | 60 months | TBC |
| Tracker | TBC | Variable | 24 months | TBC |
Application Process
- Processing Time
- 4–6 weeks from application to offer
- Online DIP
- No — via broker or branch
- Offer Valid For
- 6 months
Lending Criteria
- Maximum LTV
- 85%
- Max Loan Amount
- £1m
- Min Loan Amount
- £25k
- Rate Types
- fixed, discount
Frequently Asked Questions
What types of properties does Ecology Building Society lend on?
What is the Ecology C-Change discount?
Does Ecology Building Society offer self-build mortgages?
What is the minimum deposit required for an Ecology mortgage?
How to Apply
Direct & broker access. Apply directly or via a broker for whole-of-market access. Find a broker
Similar Lenders
View all lenders
Bath Building Society
Building SocietyBath

Cambridge Building Society
Building SocietyCambridge

Dudley Building Society
Building SocietyDudley

Leeds Building Society
Building SocietyLeeds
Related Articles
Practical guides and explainers from our blog — relevant to this mortgage type.
Important: Your home may be repossessed if you do not keep up repayments on your mortgage. Information on this page is for general guidance only and does not constitute financial advice. Always verify lender details directly and seek independent advice before making financial decisions.