Houses in multiple occupation (HMOs) can offer stronger gross yields than single lets, but they are more complex to finance. Lenders look at licensing, planning status, room sizes and management as well as rent, so preparation matters.
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What counts as an HMO?
Broadly, an HMO is a property let to three or more tenants forming more than one household who share facilities such as a kitchen or bathroom. Mandatory licensing applies where five or more people from two or more households share, and many councils also operate additional or selective licensing schemes. Planning rules differ too, and some areas apply Article 4 directions requiring consent to change to an HMO. Check with the local authority before purchase.
How lenders view HMOs
- Specialist products: many mainstream buy-to-let lenders exclude HMOs or limit them, so specialist lenders are often used.
- Licensing and compliance: expect to evidence a current licence, fire safety measures, gas and electrical certificates and planning compliance.
- Valuation basis: some valuers use investment value based on rent, others bricks-and-mortar value, which can differ significantly and affect the maximum loan.
- Experience: first-time landlords may face lower loan-to-value limits or need a managing agent.
Rental stress tests
Lenders usually test that rent covers interest by a set margin at a notional rate, and this is where HMOs can help because aggregate room rents are often higher than a single let. Our guide to buy-to-let interest coverage ratios explains the calculation and how limited company borrowers are tested differently. Rate expectations also matter because stressed rates track market pricing.
Regulatory changes landlords should plan for
The Renters’ Rights Act reforms are changing how tenancies operate, with implications for how HMO rooms are let and managed. Our summary of the Renters’ Rights Act and buy-to-let lending covers what lenders now ask. Energy efficiency standards are also tightening, so check EPC status early.
Structuring the purchase
Many investors buy HMOs through a limited company, which affects lender choice and tax treatment. Tax outcomes depend on individual circumstances, so speak to a qualified tax adviser or accountant before deciding on ownership structure. Where a property needs conversion or refurbishment first, a bridging loan followed by refinance onto an HMO mortgage is a common route.
Checklist before you apply
- Confirm planning use class and any Article 4 direction.
- Check licensing requirements and room size standards.
- Gather certificates and evidence of management arrangements.
- Prepare a portfolio schedule if you own other properties.
Our buy-to-let and portfolio landlord hub lists related guides, and our Willenhall office regularly assists investors in the West Midlands.
Frequently asked questions
Do I need a licence for a five-bedroom HMO?
Mandatory licensing applies when five or more people from two or more households share. Smaller HMOs may still need a licence under local additional licensing schemes, so check with the council.
Is the rent stress test different for HMOs?
The test is similar, but lenders may apply different notional rates or coverage margins, and some value the property on rental income. Limited company and higher-rate borrowers are often tested differently.
Can I convert a house to an HMO with a mortgage?
It is possible, but the property may need planning consent and works funding. Investors often use a bridge or development loan first and then refinance onto a term HMO mortgage once the conversion is complete and licensed.
What deposit is usually needed?
Loan-to-value limits vary by lender and experience, so a deposit of at least 25% is common, and sometimes more for larger or unconventional HMOs.
Speak to a broker
Our buy-to-let mortgage service covers HMOs and multi-unit freehold blocks. Contact us or call 02080882211.
Your property may be repossessed if you do not keep up repayments on a loan secured on it. Commercial, buy-to-let and most bridging lending is largely unregulated by the FCA, so some of the protections that apply to regulated residential mortgages may not apply.
Giles Finance is a trading style of Giles Finance & Consultancy Services, authorised and regulated by the Financial Conduct Authority (FRN 726857).