HMO vs Buy to Let: Which Is Right for You?

The primary reason landlords choose HMO over standard buy to let is yield. By renting each bedroom individually rather than the property as a whole, you can generate significantly more rental income from the same asset.

Consider a four-bedroom terraced house worth £250,000 in a Northern city:

The gap narrows once you account for higher HMO running costs — management fees of 12–15% for a specialist HMO agent, higher maintenance bills, utility bills if included, and licensing costs. But even on a net basis, most well-managed HMOs outperform equivalent single-let properties.

This is one of the most important practical differences between the two strategies. A standard buy-to-let mortgage is widely available from dozens of mainstream lenders. An HMO mortgage requires a specialist lender.

HMO Mortgage Requirements

• Minimum deposit: Typically 25–35%, depending on lender and property type
• Rental coverage: Most lenders require rent to cover 125–145% of mortgage payments
• Stress testing: Rental income assessed room-by-room, not as a whole property
• Licensing: Many lenders require a valid HMO licence before completing
• Experience: Some lenders prefer landlords with existing BTL experience

This is where HMO gets materially more complex than standard BTL. Most HMOs require a licence — and operating without one can result in substantial fines.

Mandatory HMO licence

A mandatory HMO licence is required for properties in England occupied by five or more people forming two or more households, who share facilities such as a kitchen or bathroom. Scotland, Wales and Northern Ireland have different thresholds.

Additional and selective licensing

Many councils operate additional licensing schemes that extend HMO licence requirements to smaller properties — sometimes just three or four occupants. Some councils also operate selective licensing covering all private rented property in certain areas. Always check your local council's requirements before purchasing.