Property Passport UK

HMO vs Single Let Calculator 2026

Compare the net income, yield, and running costs of an HMO (house in multiple occupation) against a standard single let for any UK property. Includes letting agent fees, void rates, HMO licensing, and additional management costs.

HMO vs Single Let Calculator

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Single Let

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HMO

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MetricSingle LetHMO
Annual gross income£14,400£28,800
Void losses-£554-£2,880
Running costs-£6,494-£14,168
Net annual income£7,906£14,632
Net yield2.64%4.88%

Better option

HMO

generates £6,726 more net income per year

HMO licensing requirements vary by council. Check local authority rules before converting. Mandatory licensing applies to properties with 5 or more people from 2 or more households.

This is an estimate for indicative purposes only. It does not constitute financial or legal advice. Consult a qualified adviser for your specific circumstances.

HMO vs single let: key differences

The decision between HMO and single let investment is one of the most important a buy-to-let landlord faces. HMOs offer higher gross income but come with significantly more regulatory complexity, higher running costs, and greater management demands.

Single lets are simpler to manage, require no specialist licence (in most areas), and suit landlords who want lower-involvement investments. The trade-off is lower gross income per pound of property value.

HMO cost comparison summary

FactorSingle LetHMO
Gross income potentialLower20–40% higher
Management complexityLowHigh
Letting agent fee (typical)8–12%12–18%
LicensingNot requiredRequired (mandatory or additional)
Bills includedUsually tenant paysUsually landlord pays
Tenant void riskAll or nothingSpread across rooms

Frequently asked questions

What is an HMO property?
An HMO (house in multiple occupation) is a property rented by three or more people from two or more different households who share facilities such as a kitchen or bathroom. Examples include shared student houses, bedsits, and professional house shares. HMOs typically generate higher gross rental income than single lets because landlords charge per room rather than per property.
Do I need a licence for an HMO?
Mandatory licensing applies to all HMOs with five or more people from two or more households in England and Wales. Many local councils also operate additional or selective licensing schemes that extend requirements to smaller HMOs — sometimes as few as three people. You must check with your local authority before converting or letting a property as an HMO. Operating without a required licence is a criminal offence with unlimited fines.
Does an HMO earn more than a single let?
Usually yes — HMOs typically generate 20–40% more gross rental income than equivalent single lets because rent is charged per room. A four-bedroom house let as a single let might achieve £1,200/month; the same property as an HMO could generate £600 per room × 4 rooms = £2,400/month. However, running costs are significantly higher: bills, licensing, higher management fees, and greater maintenance. Net yield advantage is therefore smaller than the gross figures suggest.
What are the extra costs of running an HMO?
HMO landlords typically pay: utility bills (gas, electricity, broadband — often included in room rents), council tax (for certain types of HMO), higher letting agent management fees (12–18% vs 8–12% for single lets), mandatory HMO licence fees (typically £200–£1,500/year depending on council), additional compliance costs (fire doors, fire alarm systems, emergency lighting, EPC per unit in some cases), and significantly higher day-to-day maintenance due to higher occupancy turnover.
What is Article 4 direction and how does it affect HMOs?
An Article 4 direction is a planning mechanism that removes permitted development rights in a specific area. For HMOs, it means you need full planning permission (a material change of use from C3 dwelling to C4 HMO) before converting a family home into a shared house, even for smaller HMOs with three to six occupants. Many university towns — including Oxford, Cambridge, Bristol, and Nottingham — have Article 4 directions for certain areas. Failure to obtain planning permission where required can result in enforcement action and a requirement to revert the property.

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