Do I Need an HMO Licence for 3 Tenants?

Q: What if I don't have a licence when one is required?

The consequences are serious: Civil penalty up to £30,000 per offence Criminal prosecution with an unlimited fine in the most serious cases Rent Repayment Order — tenants can apply to a tribunal to recover up to 12 months' rent Banning order — the council can ban you from letting any property "I didn't know a licence was required" is not a defence. Once additional licensing applies in your area, you are expected to know.

Three tenants in a shared house is one of the most common setups in the private rented sector — and one of the most common sources of confusion about HMO licensing. Many landlords assume that because they don't have 5 tenants, they're in the clear. Others assume 3 tenants automatically means a licence is needed.

Neither assumption is correct. Here is how licensing actually works for a 3-tenant property.

The short answer

A 3-tenant property does not require mandatory HMO licensing under the national threshold. Mandatory licensing in England applies to properties occupied by 5 or more persons from 2 or more households.

Under the Licensing of Houses in Multiple Occupation (Prescribed Description) (England) Order 2018 (SI 2018/221), Article 4, mandatory licensing applies to an HMO that:

"is occupied by five or more persons [and] is occupied by persons living in two or more separate households"

So for most 3-tenant properties, mandatory licensing does not apply — but this does not mean there is nothing to check.

Why you might still need a licence for 3 tenants

Even if you fall below the mandatory licensing threshold, two situations can require you to get a licence anyway.

1. Additional licensing schemes

Local councils in England have the power to introduce additional licensing schemes that extend HMO licensing requirements to properties smaller than the mandatory threshold — including properties with just 3 or 4 tenants.

Additional licensing varies significantly by area:

Some councils require licences for all HMOs in the borough with 3+ tenants
Others apply it to specific wards or housing market areas
Some councils have no additional licensing scheme at all
Schemes are introduced, extended, and expire regularly — so the position changes over time

You cannot determine whether additional licensing applies to your property from national guidance alone. You need to check with your local council directly.

Action point: Search for "[your council name] HMO additional licensing" or call the council's private sector housing team. This is not optional — penalties for operating without a licence when one is required are up to £30,000.

Use our HMO licensing checker to work through the question step by step before contacting your council.

2. Your property might not be an HMO at all

Before worrying about licensing, it is worth confirming that your 3-tenant property actually qualifies as an HMO.

Under Housing Act 2004 section 254 (the standard test), a property is an HMO where occupants from 2 or more separate households share or lack basic amenities (kitchen, bathroom, toilet). In practice, this means a property occupied by 3 or more unrelated people from 2 or more households — the 3-person floor reflects how the 2-household minimum operates with unrelated sharers, not a standalone statutory requirement.

Key points:

3 friends or colleagues sharing = likely HMO (they are from separate households even if they get on well)
A couple plus one other person = likely HMO (the couple is one household; the third person is a second)
A family of 3 = NOT an HMO (all one household)
2 people on separate tenancy agreements = below the 3-person threshold, not an HMO

The "2 or more households" test is about the relationship between occupants. Friends who share are from separate households. A family living together is one household.

What is an HMO licence, and what does it require?

If you do need a licence (because of an additional licensing scheme), the licence sets out conditions your property must meet. These typically include:

Minimum room sizes — national minimums (6.51m² for an adult bedroom) plus any higher local standards
Fire safety — adequate fire detection (may require interlinked alarms), fire doors, means of escape
Amenity standards — adequate kitchen and bathroom facilities for the number of occupants
Management standards — you must be a "fit and proper person" to hold a licence

Smaller HMOs (3-4 tenants) typically face less stringent requirements than larger ones, but you must still meet whatever conditions the council sets.

What if I don't have a licence when one is required?

The consequences are serious:

Civil penalty up to £30,000 per offence
Criminal prosecution with an unlimited fine in the most serious cases
Rent Repayment Order — tenants can apply to a tribunal to recover up to 12 months' rent
Banning order — the council can ban you from letting any property

"I didn't know a licence was required" is not a defence. Once additional licensing applies in your area, you are expected to know.

What counts as "separate households"?

This is often the point of confusion for smaller shared houses. Here is how the test works in practice:

Situation	Households	HMO?
3 friends sharing	3 households	Yes
Couple + 1 friend	2 households	Yes
2 people (no third)	2 households	No (below 3-person threshold)
Family of 3	1 household	No
Parents + adult child	1 household	No
3 colleagues (unrelated)	3 households	Yes

Step-by-step: what to do if you have 3 tenants

Confirm your property is an HMO — 3+ tenants from 2+ households sharing facilities? Yes → HMO. No → standard tenancy rules apply.
Check the mandatory licensing threshold — 3 tenants are below the 5-person mandatory threshold, so you do not need a mandatory licence. But continue to step 3.
Check for additional licensing in your area — contact your local council or search their website for HMO additional licensing. If a scheme applies, you likely need a licence even with 3 tenants.
Apply for a licence if required — application goes to your local council. You will need a floor plan, gas and electrical safety certificates, and details of fire safety arrangements.
Meet the licence conditions — once granted, the licence sets out what standards your property must meet.

Staying compliant beyond licensing

Whether or not your 3-tenant property needs an HMO licence, you still have the full set of landlord compliance obligations that apply to all tenancies — gas safety, EICR, EPC, deposit protection, right to rent checks, and smoke/CO alarms.

For HMOs specifically, you also have enhanced fire safety obligations regardless of whether a formal licence is required. See our fire safety in rental properties guide for what goes beyond the basic smoke alarm requirements.

Check your HMO compliance obligations for free →

How DueProper will help

DueProper will track all of your compliance obligations across every property, including HMO-specific requirements where they apply. You will get reminders before deadlines, and can upload your licence, safety certificates, and inspection records as evidence.

Coming soon — join the waitlist for early access.

Check your compliance score for free →