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Rentals & Sales
Mortgage Solutions27 March 2026

Family Building Society Revives Five-Year Fixed Mortgages: What London Landlords Need to Know

Family Building Society has expanded its fixed-rate mortgage offerings by reintroducing a broader range of five-year fixed deals across residential, family, retirement interest-only, and buy-to-let sectors. This development offers landlords greater stability amid market uncertainty but requires careful review of mortgage arrangements and rental strategies.

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Family Building Society Revives Five-Year Fixed Mortgages: What London Landlords Need to Know

Why Family Building Society's Five-Year Fixes Matter to Landlords

Family Building Society has reintroduced a wider selection of five-year fixed mortgage deals, including options tailored for residential borrowers, family and retirement interest-only loans, and crucially for landlords, buy-to-let (BTL) mortgages. This follows their earlier reintroduction of two-year fixes and 100% LTV family mortgages.

For private landlords, especially in London’s dynamic rental market, this offers an opportunity to secure longer-term interest rate certainty amid fluctuating rates and economic uncertainty. Five-year fixed rates can provide predictability in mortgage repayments, aiding cash flow management and financial planning.

Practical Implications for Different Landlord Profiles

  • Single-Unit Landlords: Locking into a five-year fixed mortgage helps avoid short-term rate hikes and reduces refinancing frequency.

  • HMO and Portfolio Landlords: Larger portfolios with multiple mortgage products can stabilise outgoings and reduce administrative burden by consolidating or refinancing with longer fixes.

  • Accidental Landlords: Longer fixed terms offer peace of mind without frequent mortgage renegotiations.

Financial and Compliance Considerations

  • Mortgage Review: Landlords should review current mortgage terms to assess if switching to a five-year fixed deal is advantageous, especially if existing deals expire within 12 months or carry variable rates.

  • Rental Pricing Impact: Securing a fixed mortgage rate can influence rental pricing strategies. Predictable mortgage costs may allow stable rent levels, benefiting tenant affordability, but landlords should ensure fixed costs align with market rents for profitability.

  • Tenancy Communication: If mortgage changes affect rental terms, landlords should transparently communicate with tenants to maintain good relations and meet tenancy agreement obligations.

Steps to Take in the Coming Weeks

  1. Engage a Specialist Mortgage Advisor: Consult a broker experienced in landlord mortgages to evaluate Family Building Society's five-year fixed deals.

  2. Conduct a Portfolio Mortgage Audit: Map out existing mortgage products, expiry dates, interest rates, and penalties to identify refinancing candidates.

  3. Scenario Planning: Model cash flow implications under fixed vs. variable rates, incorporating interest rate movements and rental income projections.

  4. Tenant Communication Plan: Prepare messaging for tenants explaining changes from mortgage refinancing, ensuring tenancy agreement compliance.

  5. Monitor Market Offers: Stay updated on evolving mortgage products from other lenders for competitive options.

How Rentals & Sales Can Support You

Our landlord intelligence hub offers tailored portfolio reviews focussing on mortgage compliance and financial optimisation. We coordinate with mortgage advisors to audit current deals, advise on pricing strategies aligned with fixed-rate mortgages, and assist in tenant communications to smooth operational changes.

Compliance Disclaimer

This article provides general information and is not financial advice. Landlords should seek personalised advice from qualified mortgage professionals and legal advisors before making financial decisions.

This article is general information, not legal or financial advice. Rules can change and may apply differently to each property. Check the dated source and seek appropriate professional advice before acting.

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