Ecology Building Society
Ecology Building Society is a UK mutual building society founded in 1981 that provides specialist mortgages for sustainable self-builds, renovations, conversions, eco-home purchases and community-led housing, funded by a corresponding range of ethical savings accounts.
- Company typePrivate
- Founded1981
- HeadquartersSilsden, United Kingdom
- Headcount101–250
- GTM typeB2B and B2C
- OfferingServices
What Ecology Building Society does
Ecology Building Society is a UK mutual building society founded in 1981 and headquartered in Silsden, West Yorkshire. It is a specialist lender focused exclusively on environmentally and socially responsible finance, offering mortgages for self-builds, renovations, conversions, eco-home purchases, shared ownership, community-led housing, charities and small-scale sustainable developers — segments that mainstream lenders typically decline due to non-standard construction methods (timber frame, straw bale, Passivhaus, rammed earth). Its mortgage book is funded by a corresponding ethical savings franchise spanning easy access, notice accounts, regular savings, Cash ISAs and impact-linked products, including the Sea-Changers Impact Saver where 1% of balances are donated to marine conservation.
The society's core technology stack combines a third-party mortgage origination platform (delivered in October 2025 by Monument Technology and One Mortgage System, providing broker portal, decision engine and underwriting functionality) with a proprietary C-Change discount system that rewards energy efficiency improvements with up to 1.50% reductions off the standard variable rate for the mortgage's lifetime. Distribution operates through a hybrid model: an extensive intermediary broker network (with 0.40% procurement fees), direct digital channels (website and iOS/Android app), a dedicated in-house mortgage advisory team, and a newly opened physical branch in Porth, Wales (the society's first, launched in partnership with Rhondda Cynon Taf Council and supported by the UK Government's Shared Prosperity Fund).
Revenue is generated primarily through net interest income on the spread between mortgage rates (4.19%-6.04% variable across products) and savings rates (2.00%-3.60% AER), supplemented by application fees (£499-£999), valuation fees and commercial lending transaction fees. As a mutual, profits are retained for members rather than distributed to shareholders. In September 2025 the society secured £7 million in funding from West Yorkshire Pension Fund to support a stated strategy of doubling mortgage lending. The society has supported over 5,000 projects since 1981, operates across England, Scotland, Wales and Northern Ireland, and holds certifications including Fair Tax Accredited, Ethical Consumer Best Buy, and Excellent ratings on Trustpilot and Smart Money People.
Ecology Building Society firmographics
Firmographics- Name
- Ecology Building Society
- Legal name
- Ecology Building Society
- Website
- https://ecology.co.uk
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Ecology Building Society is a UK mutual building society founded in 1981 that provides specialist mortgages for sustainable self-builds, renovations, conversions, eco-home purchases and community-led housing, funded by a corresponding range of ethical savings accounts.
- Ownership category
- akta.pro rank
Ecology Building Society industry classification
Industry- Product category
- Ethical Building Society / Sustainable Mortgage Lending
- akta.pro primary industry
- Building Societies (Mutual Mortgage/Retail Banks) (FSABAEAE)
- akta.pro secondary industries
- Environmental Education & Outreach (BPAGAGAH), Environmental & Climate Grantmaking Foundations (BPAGAKAM), Affordable Housing & Community Development (Housing, Community Land Trusts) (BPAGALAC)
Keywords
Where Ecology Building Society is headquartered
LocationHeadquarters
- HQ city
- Silsden
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Ecology Building Society business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Net Interest Income: Primary revenue stream from the spread between mortgage interest rates charged to borrowers and savings interest rates paid to depositors. As a building society, profits are retained to support growth and member interests rather than distributed to shareholders.
- Mortgage Fees: Application fees for mortgage products (ranging from £499 to £999 depending on product), valuation fees, and offer acceptance fees. These are one-time charges collected at various stages of the mortgage application process.
- Commercial and Community Lending Fees: Non-refundable application fees and offer acceptance fees for commercial and community mortgage products, with stage-release valuations and associated fees for development projects.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Eco Home Mortgage - 4.19% variable rate for energy-efficient properties (EPC B or above) |
| Subscription | Monthly | Conversion Mortgage - 6.04% variable rate for property conversions |
| Subscription | Monthly | Community Living Mortgage - 5.34% variable rate for co-housing |
| Subscription | Monthly | Affordable Local Homes Mortgage - 5.54% variable rate for discounted market sale homes |
| Subscription | Monthly | Shared Ownership Mortgage - 4.19% variable rate for shared ownership |
| Subscription | Monthly | Renovation 80% Large Loan - 5.59% variable rate for large renovation projects |
| Subscription | Monthly | 180-Day Notice Savings Account - 3.60% AER variable |
| Subscription | Monthly | Eco Double Access Saver - 3.45% AER variable |
| Subscription | Monthly | Cash ISA - 3.05% AER tax-free |
| Subscription | Monthly | Regular Savings - 3.00% AER variable |
| Subscription | Monthly | Easy Access Savings - 2.30% AER variable |
| Subscription | Monthly | Sea-Changers Impact Saver - 2.00% AER variable |
| Transaction based/ take rate | Pay-as-you-go | Intermediary Procurement Fee - 0.40% of loan amount |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels8 records
Ecology Building Society product offering
Product offeringCore offering
Ecology Building Society is a mutual building society that provides specialist mortgage products for sustainable and energy-efficient homes (self-build, renovation, conversion, eco home, shared ownership, affordable local homes, and community living) alongside ethical savings accounts (easy access, notice accounts, Cash ISA, regular savings, and impact savings). It also offers commercial and community lending for housing associations, cohousing groups, community land trusts, charities, and sustainable businesses. Funding comes primarily from retail savings deposits, with profits retained for member benefit rather than distributed to shareholders.
Differentiator
Problem solved
Functional benefit
Brands
- Ecology Building Society Porth: A physical branch location in Porth, Wales providing face-to-face ethical financial services, sustainable mortgages, and ethical savings to the local community.
Products and services
- Self-Build Mortgage
- Renovation Mortgage
- Conversion Mortgage
- Eco Home Mortgage
- Shared Ownership Mortgage Mortgage product for buyers purchasing an energy-efficient home through shared ownership schemes in England and Wales. Variable rate 4.19%, 95% LTV of share being purchased, maximum £750,000.
- Affordable Local Homes Mortgage
- Community Living Mortgage
- Community-Led Housing Mortgage
- Charity and Community Group Mortgage
- Housing Developer Mortgage
- Sustainable Business Mortgage
- Off-Site Build Mortgage
Quantifiable outcome
- 94% of residential mortgage customers qualify for C-Change discounts
- +3 more outcomes
Companies that use Ecology Building Society
Customer profileNamed customers15 records
Segments7 records
Ideal customer profiles5 records
Ecology Building Society technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Ecology Building Society partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- Sea-ChangerscorePartnership with marine conservation charity Sea-Changers through the Sea-Changers Impact Saver savings account. Ecology makes quarterly donations equivalent to 1% of average balances held in the account to support the charity's marine conservation work including beach cleans and habitat protection.
- Monument TechnologycoreMonument Technology partnered with One Mortgage System (OMS) to deliver a new end-to-end mortgage origination platform for Ecology Building Society, which went live in October. The platform provides broker portal, decision engine, and underwriting functionality supporting the society's growth strategy.
- One Mortgage System (OMS)coreOne Mortgage System (OMS) partnered with Monument Technology to deliver a new mortgage origination platform for Ecology Building Society. The platform provides an end-to-end mortgage journey including broker portal, decision engine, and underwriting functionality.
- Rhondda Cynon Taf CouncilcorePartnership with Rhondda Cynon Taf Council to open the society's first branch on Hannah Street in Porth. The renovation was supported by the UK Government's Shared Prosperity Fund, bringing face-to-face ethical financial services back to the high street.
- RetrogreenminorPartnership with Retrogreen to offer free access to personalised retrofit plans and practical advice for renovation mortgage applicants. Helps customers choose the right energy efficiency upgrades before applying for financing.
Scale indicators6 records
Recent moves6 records
Expansion highlights6 records
Ecology Building Society competitors and assessment
Company assessmentBroad incumbents
- Skipton Building Society: Large UK building society with a broad mortgage and savings product range, including specialist lending tracks. Provides a useful comparison for mutual building society scale and product breadth.
- Yorkshire Building Society: Large UK building society headquartered in Yorkshire, offering residential mortgages and savings. Relevant incumbent benchmark given Ecology's own Yorkshire roots and similar mutual model.
- Nationwide Building Society: The UK's largest building society by members and a mainstream mortgage and savings provider. Useful scale and mutual-structure benchmark for Ecology's mutual governance and product set.
- Coventry Building Society: One of the UK's largest mutual building societies offering a full range of mortgages and savings. Comparable as a broad incumbent building society peer, though with no specific sustainable-lending specialism.
Regional players
- Newcastle Building Society: Regional UK building society offering residential mortgages, savings, and commercial lending. Comparable mutual structure and product mix, though without Ecology's sustainability specialism.
- Principality Building Society: Welsh mutual building society, the largest in Wales, offering residential and commercial mortgages plus savings. Directly comparable given shared UK building society structure and overlap with Ecology's Porth branch region.
- Cumberland Building Society: Regional UK building society offering savings, residential mortgages, and commercial lending in northern England and Scotland. Comparable as a regional mutual building society peer.
- Bath Building Society: Smaller UK building society offering savings and a focused range of residential mortgages. Useful comparable for a small-to-mid-sized mutual building society with a niche lending proposition.
Direct peers
- Charity Bank: UK savings bank that lends exclusively to charities, social enterprises, and community organisations. Comparable to Ecology's community-led housing and charity mortgage book, with a similarly values-aligned depositor base.
- Triodos Bank UK: European ethical and sustainable bank offering UK savings accounts, mortgages, and business lending with a focus on environmental and social impact. Closest direct analogue to Ecology given its mission-driven lending model and transparent values-based banking.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Ecology Building Society social profiles
Digital presenceEcology Building Society financial estimates
Financial estimateRevenue estimate
Valuation estimate
Ecology Building Society leadership team
Management profileNumber of profiles
Profiles7 records
Ecology Building Society funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Ecology Building Society M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Ecology Building Society
What does Ecology Building Society do?
Ecology Building Society is a mutual building society that provides specialist mortgage products for sustainable and energy-efficient homes (self-build, renovation, conversion, eco home, shared ownership, affordable local homes, and community living) alongside ethical savings accounts (easy access, notice accounts, Cash ISA, regular savings, and impact savings). It also offers commercial and community lending for housing associations, cohousing groups, community land trusts, charities, and sustainable businesses. Funding comes primarily from retail savings deposits, with profits retained for member benefit rather than distributed to shareholders.
Is Ecology Building Society a public or private company?
Ecology Building Society is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was Ecology Building Society founded?
Ecology Building Society was founded in 1981. It employs 101 to 250 people.
Where is Ecology Building Society based?
Ecology Building Society is headquartered in Silsden, United Kingdom, in the Europe region.
How does Ecology Building Society make money?
Three revenue lines are on record. Net Interest Income is the primary driver. The others are mortgage Fees and commercial and Community Lending Fees.
Who are Ecology Building Society's main competitors?
Broad incumbents on record are Skipton Building Society, Yorkshire Building Society, Nationwide Building Society and Coventry Building Society. Regional players are Newcastle Building Society, Principality Building Society, Cumberland Building Society and Bath Building Society. Direct peers are Charity Bank and Triodos Bank UK.
Does Ecology Building Society have an API?
No public API is recorded for Ecology Building Society.
What industry is Ecology Building Society in?
Ecology Building Society's product category is Ethical Building Society / Sustainable Mortgage Lending. Its primary akta.pro industry code is FSABAEAE, Building Societies (Mutual Mortgage/Retail Banks), with a secondary code of BPAGAGAH, Environmental Education & Outreach.