Keystone Property Finance
Specialist LenderKeystone Property Finance is a specialist buy-to-let lender and part of the Nationwide Building Society group. Operating alongside The Mortgage Works, Keystone focuses on more complex BTL cases including HMOs, multi-unit blocks, and portfolio landlords that fall outside standard criteria.
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About Keystone Property Finance
Keystone Property Finance was established as a specialist buy-to-let lending brand within the Nationwide Building Society group. While The Mortgage Works (TMW) handles standard buy-to-let lending for the group, Keystone was created to serve the more complex end of the BTL market — landlords with non-standard properties, larger portfolios, and cases that require bespoke underwriting.
Keystone focuses on areas such as HMO lending, multi-unit freehold blocks (MUFBs), portfolio landlord cases, and buy-to-let for limited company structures. The lender benefits from Nationwide's financial strength and funding stability, while maintaining the agility and specialist focus needed to serve professional landlords with complex requirements. Keystone's underwriting team has deep expertise in property investment structures and can assess cases that mainstream lenders would decline.
Keystone Property Finance operates exclusively through mortgage brokers and intermediaries. The lender has built strong relationships with the intermediary community by offering clear criteria, pragmatic underwriting, and competitive rates for specialist BTL products. Being part of the Nationwide group gives Keystone access to substantial funding and institutional stability that independent specialist lenders cannot always match.
Lending Focus
Keystone Property Finance offers mortgage products across 4 categories including Buy-to-Let, Limited Company, HMO and 1 more.
Key Features
- Specialist HMO and multi-unit freehold block (MUFB) lending
- Limited company SPV buy-to-let products for portfolio landlords
- Backed by Nationwide Building Society providing exceptional funding stability
- Complex portfolio landlord assessment with pragmatic underwriting
- Holiday let mortgage products for furnished holiday lettings
Pros & Cons
Pros
- Part of Nationwide group providing unrivalled funding security for a specialist lender
- Strong specialist criteria for HMOs, MUFBs, and complex BTL structures
- Competitive rates for specialist BTL compared to independent lenders
- Experienced underwriting team with deep property investment expertise
Cons
- –Broker-only — no direct applications accepted
- –Buy-to-let only — no residential mortgage products
- –Maximum 80% LTV is slightly lower than some competitors
Fees & Charges
- Arrangement Fee
- Typically £995–£1,495 — varies by product complexity
- Valuation Fee
- Based on property value and type — usually £250–£1,800
- Early Repayment Charge
- Typically 3–5% during fixed-rate period
- Overpayment Allowance
- Up to 10% per year on most fixed-rate products
Mortgage Rates
Rate data coming soon. View rates on Keystone Property Finance
Application Process
- Processing Time
- 2–4 weeks from application to offer
- Online DIP
- Yes — available online
- Offer Valid For
- 6 months
Lending Criteria
- Maximum LTV
- 80%
Frequently Asked Questions
Is Keystone Property Finance part of Nationwide?
Does Keystone offer HMO mortgages?
Can I get a limited company BTL mortgage from Keystone?
What types of buy-to-let does Keystone not cover?
How to Apply
Broker only. Keystone Property Finance products are available through mortgage brokers. Find a broker with Keystone Property Finance on their panel.
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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.