How many lodgers can you have before your home becomes an HMO?

In England and Wales, the familiar two-lodger rule is mainly a licensing and management exemption, not a complete escape from HMO law. Scotland has its own HMO rules, and Northern Ireland is different again, so the answer is stated by nation where it matters.

How many lodgers can you have before your home becomes an HMO?

In England and Wales, a resident freeholder or long-leaseholder can usually have up to two lodgers before HMO licensing and HMO management duties apply, but the home can still be an HMO for Housing Act 2004 Part 1 health-and-safety enforcement because Schedule 14 is excluded “for any purposes of this Act (other than those of Part 1)”. The two-person figure is explicit in both England and Wales: “The number of persons specified for the purposes of paragraph 6(1)(c) of Schedule 14 to the Act is two.” That means a live-in landlord can have two lodgers without the usual HMO licensing result, but three lodgers is the danger point. In Scotland, HMO status starts at “3 or more persons” not all in one or two families. In Northern Ireland, the core test counts households: an HMO requires occupants who “form more than two households”, and no regulation fixes the owner-occupier “other persons” number.

Do you need an HMO licence for lodgers?

In England, you need an HMO licence for lodgers if the property is a licensable HMO: mandatory licensing starts where the HMO “is occupied by five or more persons”, and smaller HMOs can still need a licence in an additional-licensing area. The resident-owner two-lodger exemption means many ordinary home shares do not need an HMO licence, but owner plus four lodgers normally reaches the five-person mandatory threshold if the other HMO conditions are met. Wales is not identical to England because the Welsh mandatory licensing description still includes the requirement that “the HMO or any part of it comprises three storeys or more”, though councils can also use additional licensing. Northern Ireland is stricter once the property is an HMO: “Every house in multiple occupation (‘HMO’) must be licensed under this Act”. Abodient can store HMO licence documents and expiry dates against the property, which matters because additional licensing varies council by council and missed renewals are easy to overlook.

Does the resident landlord exemption still apply if the property is not your main home?

For tenancy status in England and Wales, the resident-landlord exemption depends on the property being your only or principal home; for the Housing Act 2004 Schedule 14 HMO owner-occupier exemption, the wording is different and turns on occupation plus ownership or a long lease. GOV.UK states the ordinary lodger position plainly: “You’re a resident landlord if you let out part of a property which is your only or main home.” The Housing Act 1988 exclusion for assured tenancy status also uses only-or-principal-home language, so long-term occupiers in a flat that is not actually your main residence may have fuller tenant protections even if you keep a bedroom there. By contrast, Schedule 14 refers to occupation by people who have “either the freehold estate or a leasehold interest granted for a term of more than 21 years”; it does not use the same main-home wording. Scotland’s landlord-registration guidance is narrower: “The exemption only covers the landlord's main residence”.

How many lodgers can you have in Scotland?

In Scotland, there is no simple statutory headcount cap of two lodgers in the same way as England’s licensing exemption; the core HMO definition is three or more people from more than two families, while the owner-occupier licensing exemption can cover “any number of other persons” if they are in one or two families. The Scottish HMO definition is described in the legislation notes as “living accommodation occupied by three or more people, who are members of more than two families.” That means owner plus two unrelated lodgers can already meet the basic HMO definition, because that is three people and more than two families. However, section 126 contains an owner-occupier exemption for owners and “any number of other persons” who are members of one or two families. Scottish Government guidance and councils often say “Any resident landlord with more than two lodgers is covered by HMO licensing,” so in practice a Scottish landlord should check the council before taking a third lodger.

Does a room let on Airbnb count towards your lodger total?

In Scotland, an Airbnb-style room let does not normally count towards your lodger total for HMO occupation because HMO status depends on people using the accommodation as their only or main residence, while a short-term let is defined on the basis that “the guest does not use the accommodation as their only or principal home”. A live-in landlord with two ordinary lodgers and a spare room used occasionally by visitors is therefore dealing with two separate regimes: HMO rules for the people who live there, and short-term let licensing for paying guests who do not. Scottish guidance draws the same line by saying that providing accommodation to a lodger in your own home, “where it is the lodger’s only or principal home”, is excluded from the short-term let regime. The short-term let may still need its own licence because Scotland’s licensing scheme covers “rooms within a home”, so the Airbnb point is not a free extra room; it is a different permission question.

If a lodger moves out and the room sits empty, does the property stop being an HMO?

In Scotland, an empty room means the HMO occupation test may no longer be met if fewer than three people from more than two families are actually occupying the accommodation, but an HMO licence is not automatically cancelled just because a lodger moves out. The statutory HMO definition is based on living accommodation “occupied by 3 or more persons who are not all members of the same family or of one or other of two families”, so a vacant bedroom is not itself an occupant. The separate licence position is different: “The licence holder may cancel the HMO licence at any time by returning it” to the local authority, which makes cancellation a step taken by the licence holder rather than an automatic consequence of vacancy. Scottish councils also treat vacancy as compatible with a continuing licensed HMO; Dundee’s notes say that “After a period of vacancy, all fire detection, emergency lighting and firefighting equipment must be fully tested prior to tenants resuming occupancy.”

How many rooms can you let under the Rent a Room scheme?

Rent a Room has no room-count limit: it is a UK income-tax relief with a £7,500 receipts limit, and HMRC says “You can let out as much of your home as you want.” The statute frames the relief as income from “furnished accommodation in an individual's only or main residence”, and the money figure is the key number: “The basic amount for a tax year is £7500.” That answers the Rent a Room scheme 2 lodgers question for tax, but it does not override HMO law, mortgage terms, lease covenants, planning rules or Help to Buy-style scheme restrictions. In England and Wales, the HMO licensing-management exemption still uses the two “other persons” figure; in Scotland, more than two lodgers is commonly treated by councils as an HMO licensing issue; and in Northern Ireland, HMO law counts persons and households rather than Rent a Room bedrooms. Rent a Room is a tax rule, not permission to create any size of home share.

Can you take in a lodger in your first home?

Yes, you can take in a lodger in your first home if your mortgage, lease, scheme conditions and local licensing rules allow it, and Rent a Room can apply because HMRC says the scheme lets “owner occupiers and tenants” receive tax-free income from furnished accommodation in their only or main home. No UK housing statute bans a lodger simply because the property is your first home. The main legal effects depend on residence and sharing: in England and Wales, a lodger who shares accommodation with a landlord in that landlord’s only or principal home can be an excluded occupier, and GOV.UK says “you only have to give them ‘reasonable notice’” and do not have to go to court. Mortgage terms are often the practical blocker; Santander’s residential conditions, for example, say “You mustn’t take in tenants or let the property or any part of the property” without written permission. Help to Buy also permits room renting but not whole-property subletting.

Last reviewed August 2026.

Sources

• The Licensing and Management of Houses in Multiple Occupation and Other Houses (Miscellaneous Provisions) (England) Regulations 2006 reg. 6 — “The number of persons specified for the purposes of paragraph 6(1)(c) of Schedule 14 to the Act is two.” Source
• The Licensing and Management of Houses in Multiple Occupation and Other Houses (Miscellaneous Provisions) (Wales) Regulations 2006 reg. 6 — “The number of persons specified for the purposes of paragraph 6(1)(c) of Schedule 14 to the Act is two.” Source
• Housing Act 2004 s.254 — “But for any purposes of this Act (other than those of Part 1) a building or part of a building within subsection (1) is not a house in multiple occupation if it is listed in Schedule 14.” Source
• Housing Act 2004 Schedule 14 — “(a)one or more persons who have, whether in the whole or any part of it, either the freehold estate or a leasehold interest granted for a term of more than 21 years;” Source
• Houses in Multiple Occupation (Prescribed Description) (England) Order 2018 art. 4 — “(a)is occupied by five or more persons;” Source
• Licensing of Houses in Multiple Occupation (Prescribed Descriptions) (Wales) Order 2006 art. 3 — “(a)the HMO or any part of it comprises three storeys or more;” Source
• Housing Act 2004 s.55 — “(b)if an area is for the time being designated by the authority under section 56 as subject to additional licensing, any HMO in that area which falls within any description of HMO specified in the designation.” Source
• Houses in Multiple Occupation Act (Northern Ireland) 2016 s.1 — “(c)those persons form more than two households (see section 4), and” Source
• Houses in Multiple Occupation Act (Northern Ireland) 2016 s.7 — “Every house in multiple occupation (“HMO”) must be licensed under this Act (unless a temporary exemption notice under section 15 is in effect in respect of it).” Source
• GOV.UK, Rent a room in your home — “You’re a resident landlord if you let out part of a property which is your only or main home.” Source
• Housing Act 1988 Schedule 1 paragraph 10 — “(b)that, subject to Part III of this Schedule, the tenancy was granted by an individual who, at the time when the tenancy was granted, occupied as his only or principal home another dwelling-house which,—” Source
• Scottish Government, Registration of private landlords: guidance for local authorities — “The exemption only covers the landlord's main residence; if the landlord lets any other houses he or she must be registered and the houses must be recorded.” Source
• Housing (Scotland) Act 2006 explanatory notes — “The first requirement is that it is living accommodation occupied by three or more people, who are members of more than two families.” Source
• Housing (Scotland) Act 2006 s.126 — “(ii)any number of other persons who are unrelated to any of those owners but who are members of the same family or of one or other of two families,” Source
• Scottish Government, Registration of private landlords: guidance for local authorities — “Any resident landlord with more than two lodgers is covered by HMO licensing.” Source
• Civic Government (Scotland) Act 1982 (Licensing of Short-term Lets) Order 2022 art. 3 — “(a)the guest does not use the accommodation as their only or principal home,” Source
• Scottish Government, Short-term lets licensing scheme guidance — “Providing accommodation to a lodger in your own home (where it is the lodger’s only or principal home) is also excluded.” Source
• Scottish Government, Short-term lets licensing scheme — “The short-term lets licensing scheme is mandatory for all short-term let accommodation across Scotland, including holiday cottages, B&Bs, guest houses, rooms within a home and unconventional accommodation such as pods and yurts.” Source
• Housing (Scotland) Act 2006 s.125 — “‘HMO’ means any living accommodation occupied by 3 or more persons who are not all members of the same family or of one or other of two families” Source
• Housing (Scotland) Act 2006 s.141 — “The licence holder may cancel the HMO licence at any time by returning it (and any certified copy issued under section 140(3)) to the local authority.” Source
• Dundee City Council, HMO notes — “After a period of vacancy, all fire detection, emergency lighting and firefighting equipment must be fully tested prior to tenants resuming occupancy.” Source
• Income Tax (Trading and Other Income) Act 2005 s.784 — “This Chapter provides relief on income from the use of furnished accommodation in an individual's only or main residence.” Source
• Income Tax (Trading and Other Income) Act 2005 s.789 — “The basic amount for a tax year is £7500.” Source
• GOV.UK, The Rent a Room Scheme — “You can let out as much of your home as you want.” Source
• HMRC Helpsheet HS223, Rent a Room Scheme 2026 — “The Rent-a-Room Scheme allows owner occupiers and tenants to receive tax-free rental income if you provide furnished accommodation in your only or main home.” Source
• Protection from Eviction Act 1977 s.3A — “(b)immediately before the tenancy or licence was granted and also at the time it comes to an end, the landlord or licensor occupied as his only or principal home premises of which the whole or part of the shared accommodation formed part.” Source
• GOV.UK, Your lodger’s tenancy type — “In this case, you only have to give them ‘reasonable notice’ to end the letting - and you will not have to go to court to evict them.” Source
• Santander, A straightforward guide to your mortgage — “You mustn’t take in tenants or let the property or any part of the property without first obtaining our written permission unless we’ve already discussed this with you and agreed to provide you with a Buy to Let mortgage.” Source
• GOV.UK, How to sublet your Help to Buy home — “Renting out a room is permitted, but subletting the whole property is not allowed, except in specific circumstances.” Source