Mortgage guide
Commercial Buy to Let Mortgages: detailed guide
Commercial buy to let mortgage advice from expert brokers. Suitable for HMOs, serviced accommodation and semi commercial property.
- Published
- 13 Apr 2026
- Last reviewed
- 8 Oct 2026
- Reading time
- 3 min
HMO commercial mortgages
Houses in Multiple Occupation (HMOs) represent one of the most common use cases for commercial buy-to-let mortgages, particularly where property size, tenant profile, or income structure falls outside standard buy-to-let criteria.
Social Housing mortgage
Social housing and supported living investments often fall outside the risk appetite of standard buy-to-let lenders due to lease length, tenant profile, and care provision requirements. Mainstream lenders typically cap lease terms at five years and frequently decline properties involving 24-hour care, on-site staff, or higher-risk tenant groups, making specialist funding essential.
Investor Led mortgages
Investor-led residential developments, including off-plan schemes, require a different lending approach to standard buy-to-let properties. These projects are increasingly popular with professional investors but are frequently declined by mainstream lenders due to valuation methodology, concentration risk, and resale assumptions. As a result, commercial buy-to-let mortgages are often the appropriate funding route.
Commercial investment calculator
For investment property assessed on tenant lease income.
Buy to let mortgages above commercial property
Securing a buy-to-let mortgage on a property located above commercial premises is more complex than funding a standard residential investment. Mainstream buy-to-let lenders often treat properties above shops, restaurants, takeaways, or offices as higher risk due to concerns around re-saleability, nuisance factors, and commercial trading hours. As a result, many will decline outright or restrict borrowing to 60%-65% LTV.
Read more about Buy to let mortgages above commercial property
Serviced Accommodation Mortgage
Serviced accommodation (SA) and Airbnb-style properties are often best funded using commercial buy-to-let mortgages due to the non-standard income models involved. Mainstream buy-to-let lenders frequently struggle to underwrite these assets accurately, either classifying them incorrectly as holiday lets or applying residential affordability models that materially understate income.
Applicants Based Overseas
Lending decisions are driven primarily by asset quality, rental income, and deal structure, rather than UK employment or residency.
Semi commercial buy to let mortgage
Securing a semi-commercial buy-to-let mortgage can offer a material advantage where a property comprises both residential and commercial elements. Where the residential portion dominates, these products are often priced more competitively than full commercial mortgages, resulting in lower borrowing costs and broader lender choice.
Multi unit block mortgages
Multi-unit freehold blocks (MUFBs) are a core asset class for professional landlords seeking scale, income efficiency, and yield optimisation. Because these properties comprise multiple dwellings held under a single freehold title, they are most appropriately financed using commercial buy-to-let mortgages, rather than standard residential buy-to-let products.
Commercial buy to let mortgage criteria
For context, these are the wider product terms covered by this guide. Availability and eligibility depend on your circumstances and the lender.
| Criteria | Detail |
|---|---|
| Loan to Value (LTV): below market value or title splits | Up to 100% of purchase price |
| Loan to Value (LTV) | Up to 85% |
| Property strategies | Mortgages for HMO, Airbnb, holiday lets, social housing, semi commercial |
| Asset use classes | C3, C3b, C4, sui generis |
| Borrowers | Personal, Ltd co, LLP, Offshore Trusts |
| Repayment type | Interest only, repayment |
| Term | Up to 40 years |
| Minimum loan | £40,000 |
| Experience | Not required |
| Valuations available | Market value 1 (MV1) commercial valuation (yield based), hybrid, or bricks and mortar, aggregate valuation (for MUFB) |
| Flats/apartments | Above, near or adjacent to commercial accepted |
| Max rooms/units | None |
Related case studies
Frequently asked questions
What is a commercial buy-to-let mortgage?
A commercial buy-to-let mortgage is a specialist investment loan used to purchase or refinance income-generating residential or mixed-use property that falls outside standard buy-to-let criteria. Lending is assessed on rental income, asset quality, and risk profile rather than residential affordability alone.
Can first-time buyers get a commercial buy-to-let mortgage?
Yes, first-time buyers can obtain commercial buy-to-let mortgages, although lender choice is more limited. Strong rental income, lower leverage, and straightforward property types improve acceptance.
Can I get buy-to-let rates with a commercial-style valuation?
A small number of lenders offer buy-to-let interest rates alongside a true yield-based commercial-style valuation. That combination is what makes the difference on a large HMO.
Do I need a commercial mortgage to buy a pub?
Yes, normally. Pubs are classed as commercial property, so buying one in the UK needs a commercial mortgage. Lending is based on the valuation and, where the pub is trading, its profitability, rather than on residential affordability rules.
Do I need a commercial mortgage to buy a block of apartments?
Not always; smaller blocks that meet buy-to-let criteria can be funded with MUFB buy-to-let mortgages, while larger or more complex blocks typically require commercial mortgage finance.
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