HMO licence requirements in England, Wales and Scotland: the complete guide for short-let operators

The words "HMO licence" make most people think of student houses with six tenants sharing one bathroom. But the definition of a House in Multiple Occupation is broader than most landlords assume — and for short-let operators in particular, it can apply in circumstances that aren't immediately obvious.

What is an HMO?

A House in Multiple Occupation is defined under the Housing Act 2004 as a property occupied by:

• 3 or more people from 2 or more separate households, who share a kitchen, bathroom, or toilet.

A "household" means a single person or members of the same family living together.

Examples that qualify as HMOs:

• A 3-bed flat shared by 3 unrelated individuals (the classic student house)
• A large house occupied by 2 families sharing a kitchen
• A bedsit property with shared bathroom facilities

Does short-let trigger HMO status?

This is where it gets interesting for Airbnb and serviced accommodation operators.

A short-let property occupied by 5 or more people from 2 or more households — for example, two families or a group of friends booking together — technically meets the statutory definition of an HMO for the duration of that stay.

In practice, most short-let properties don't trigger HMO licensing because:

1. The occupation is temporary (under 28 days typically)
2. The property isn't used as a person's "only or main residence"
3. Most local authorities don't actively pursue short-let operators under HMO rules

However, "in practice" is not the same as "exempt." If your property regularly accommodates groups of 5+ people from multiple households for consecutive bookings, you should seek specific local authority guidance.

When is mandatory HMO licensing required?

In England and Wales, mandatory HMO licensing is required if your property:

• Has 5 or more people from 2 or more households
• Has 3 or more storeys

In 2018, the "3 storey" requirement was removed for mandatory licensing — meaning all HMOs with 5+ people from 2+ households in England now require a licence, regardless of the number of storeys.

In Scotland, HMO licensing thresholds are lower and apply to properties with 3 or more unrelated people sharing. Scottish HMO licences are issued by local councils and must be renewed annually.

Additional licensing schemes

On top of mandatory licensing, many local councils operate additional licensing schemes that apply to HMOs with fewer people — sometimes as few as 3 unrelated occupants. London boroughs are particularly active with additional licensing.

Before assuming your property doesn't need a licence, check your local council's website. The rules vary significantly between authorities.

What does HMO licensing involve?

If you need a licence, you must:

1. Apply to your local council with property details
2. Pay the licence fee (typically £500–£1,500 depending on council)
3. Meet minimum room size standards
4. Install required fire safety measures (interlinked alarms, fire doors, signage)
5. Comply with ongoing management regulations

HMO licences typically last 5 years (3 years in Scotland).

What's the fine for an unlicensed HMO?

An unlimited fine. Seriously — the Housing Act 2004 removed the cap.

In addition, landlords of unlicensed HMOs can be required to repay up to 12 months' rent to tenants via a Rent Repayment Order.

Tracking HMO licences in Sorted BNB

If you hold an HMO licence — or a short-let licence in Scotland — Sorted BNB's compliance module lets you track it alongside your gas safety, EICR, and EPC certificates. You add the licence number, issuing authority, issue date, and expiry. The countdown runs. You get an alert before renewal.

The same system that tracks your gas safety certificate tracks your HMO licence. One dashboard, every compliance obligation, no renewals missed.