UK Landlord Compliance Glossary
Plain English definitions of the compliance terms UK landlords run into most often, updated for the Renters' Rights Act 2025. Each term links directly, so you can share a definition by sending its anchor link.
Additional Licensing
Additional licensing is a discretionary scheme a council can introduce to license HMOs that fall below the mandatory licensing threshold. It lets local authorities regulate smaller shared houses that would otherwise need no licence. Because it is set locally, whether it applies depends on the specific borough or council.
Article 4 Direction
An Article 4 Direction removes permitted development rights in a defined area, and is often used by councils to control the conversion of family homes into HMOs. In an Article 4 area, a landlord must obtain full planning permission before converting a property to an HMO. Check with your local planning authority before purchasing or converting a property.
Assured Periodic Tenancy
The assured periodic tenancy is the new default tenancy type in England from 1 May 2026 under the Renters' Rights Act 2025. It rolls on a monthly basis with no fixed end date, so tenants are no longer locked into a fixed term. A landlord can only bring it to an end by using one of the statutory possession grounds.
AST (Assured Shorthold Tenancy)
An Assured Shorthold Tenancy was the standard form of private tenancy in England, usually granted for a fixed term of six or twelve months. It was the default tenancy type until 1 May 2026, when the Renters' Rights Act 2025 replaced it with the assured periodic tenancy. Existing ASTs converted automatically to periodic tenancies on that date.
Awaab's Law
Awaab's Law is a new legal duty requiring landlords to investigate and fix reported hazards within strict timeframes. It is named after Awaab Ishak, a two-year-old who died from prolonged exposure to mould in his home. It is expected to apply to the private rented sector through the Renters' Rights Act 2025.
Building Safety Levy
The Building Safety Levy is a charge on developers of high-rise residential buildings, intended to help fund the remediation of unsafe cladding and other building safety defects. It commences on 1 October 2026. It applies to developers rather than to individual buy-to-let landlords, but it affects the wider cost and supply of new residential housing.
Civil Penalty
A civil penalty is a financial penalty a local authority can impose directly on a landlord or agent as an alternative to criminal prosecution. From 1 May 2026 the maximum civil penalty rose to £40,000 per offence. Because it does not require a court conviction, a council can issue one relatively quickly once a breach is established.
Decent Homes Standard
The Decent Homes Standard is a minimum standard for the condition of rental properties that originally applied only to social housing. The Renters' Rights Act 2025 extends it to the private rented sector for the first time. Once in force, all private rental properties must meet baseline standards for repair, thermal comfort, and modern facilities.
Deposit Protection
Landlords who take a deposit on an assured tenancy must protect it in a government-approved scheme and serve the prescribed information within 30 days of receiving it. Failure to protect the deposit can expose the landlord to a penalty of one to three times the deposit amount. It also blocks the landlord from serving a valid possession notice until the position is put right.
EICR (Electrical Installation Condition Report)
An Electrical Installation Condition Report is a formal assessment of the fixed electrical installation in a property carried out by a qualified inspector. It is mandatory for rental properties in England and must be renewed at least every five years. A copy must be provided to tenants within 28 days of the inspection.
Energy Act 2011
The Energy Act 2011 is the legislation that introduced Minimum Energy Efficiency Standards for the private rented sector. It prohibits letting a property with an EPC rating below the minimum standard, currently an E, unless a valid exemption is registered. Penalties for non-compliance are up to £5,000.
EPC (Energy Performance Certificate)
An Energy Performance Certificate rates a property's energy efficiency from A, the most efficient, down to G, and is required before a property can be let. The current minimum standard for rental properties is an E rating. The government has proposed raising the minimum to a C rating by 2028 to 2030, although this has not yet been confirmed in law.
Fitness for Human Habitation
Under the Homes (Fitness for Human Habitation) Act 2018, landlords must ensure a property is fit for human habitation throughout the tenancy. Tenants can take legal action directly if it is not, without needing to go through the council. The duty covers issues such as damp, structural problems, water supply, drainage, ventilation, and natural lighting.
Gas Safety Certificate
A Gas Safety Certificate, also known as a CP12, records the annual inspection of gas appliances and flues by a Gas Safe registered engineer. The inspection is required every year for any property with gas appliances. A copy must be given to existing tenants within 28 days of the check and to new tenants before they move in.
Ground 1 / Ground 1A
Ground 1 and Ground 1A are possession grounds that let a landlord recover a property for their own occupation (Ground 1) or in order to sell it (Ground 1A). Under the Renters' Rights Act 2025, Ground 1 cannot be used in the first 12 months of a tenancy. Both grounds require a minimum of four months notice.
HHSRS (Housing Health and Safety Rating System)
The Housing Health and Safety Rating System is the risk-based assessment tool local authorities use to evaluate hazards in residential properties. It covers 29 categories, including damp, excess cold, falls, fire, and overcrowding. A Category 1 hazard requires mandatory enforcement action by the council.
HMO (House in Multiple Occupation)
A House in Multiple Occupation is a property occupied by three or more people who form two or more separate households and share facilities such as a kitchen or bathroom. Larger HMOs, generally those housing five or more people across three or more storeys, require a mandatory licence. Many councils also run additional or selective licensing schemes that capture smaller HMOs, so the exact requirement varies by area.
How to Rent Guide
The How to Rent guide is the official government document that landlords in England must provide to tenants at the start of a tenancy. Failure to provide it previously blocked a landlord from serving a valid Section 21 notice. Since Section 21 was abolished it remains a legal requirement, but the consequences of failing to provide it have changed.
Improvement Notice
An improvement notice is a formal notice served by a local authority requiring a landlord to carry out specified repairs or improvements within a set timeframe. It is typically issued after an HHSRS assessment identifies a Category 1 or Category 2 hazard. Failure to comply can lead to prosecution or a civil penalty.
Landlord Licensing
Landlord licensing is the collective term for mandatory HMO licensing, additional licensing, and selective licensing schemes that require a landlord to hold a licence to let a property. Requirements vary significantly by council area. Operating without a required licence is a criminal offence that carries a civil penalty of up to £40,000.
Landlord Registration
Landlord registration is a legal requirement to record yourself as a private landlord with the relevant authority before letting a property. It applies in Scotland through Landlord Registration, in Wales through Rent Smart Wales, and in Northern Ireland through the Landlord Registration Scheme. England does not currently operate a national landlord register.
Making Tax Digital (MTD)
Making Tax Digital is HMRC's requirement for landlords with rental income above £50,000 to keep digital records and submit quarterly updates from April 2026. The threshold drops to £30,000 from April 2027. It changes how landlords report rental income, not the amount of tax owed.
MEES (Minimum Energy Efficiency Standards)
Minimum Energy Efficiency Standards set the lowest EPC rating at which a property can lawfully be let. The current standard is an E rating, and letting a property below this without a valid exemption is unlawful. A government consultation on raising the minimum to a C rating closes on 30 June 2026.
Pet Permission
Under the Renters' Rights Act 2025, a landlord cannot unreasonably refuse a tenant's written request to keep a pet. A landlord may require the tenant to take out pet damage insurance as a condition of consent. A refusal can be challenged through the new Pet Request Process (PRP).
Prescribed Forms
Prescribed forms are the official government forms that landlords are legally required to use for notices and statutory documents. They were updated under SI 2026/354 with effect from 1 May 2026. Serving a notice on an out-of-date form can make the notice invalid, so using the current version matters.
Property Licence
A property licence is the document issued by a local authority confirming that a property meets the conditions of a licensing scheme. Conditions typically cover fire safety, room sizes, amenity standards, and property management. A licence is usually valid for up to five years.
Property Ombudsman
The Property Ombudsman is a government-approved redress scheme that resolves disputes between consumers and property businesses. Letting and managing agents are legally required to belong to an approved redress scheme. Membership gives tenants and landlords a route to escalate complaints without going to court.
Rent Increase (Section 13)
A Section 13 notice is the statutory mechanism for increasing the rent on a periodic tenancy. The new Form 4A must be used from 1 May 2026. A tenant can challenge the proposed increase at a First-tier Tribunal if they believe it exceeds the market rent.
Rent Repayment Order (RRO)
A Rent Repayment Order is an order made by the First-tier Tribunal that requires a landlord to repay rent for certain housing offences, such as operating an unlicensed HMO. The tribunal can order repayment of up to 24 months of rent. Both tenants and local authorities can apply for one.
Rent Smart Wales
Rent Smart Wales is the mandatory registration and licensing scheme for the private rented sector in Wales. Every landlord with property in Wales must register, and anyone carrying out letting or management work must be licensed and trained. Operating without the required registration or licence is a criminal offence.
Renters' Rights Act 2025
The Renters' Rights Act 2025 is the most significant reform of the English private rented sector in a generation. It abolished Section 21 no-fault evictions, replaced fixed-term assured shorthold tenancies with periodic tenancies, and introduced new possession grounds. Its main provisions came into force on 1 May 2026.
Right to Rent
Right to Rent is the legal obligation on landlords to verify a tenant's immigration status before granting a tenancy in England. Checks must be carried out on all adult occupiers, not only the lead tenant. Failure to comply can result in a civil penalty of up to £10,000 per tenant for a first breach.
Section 8 Notice
A Section 8 notice is the possession notice a landlord serves to seek to end a tenancy on one or more specific legal grounds, such as rent arrears or anti-social behaviour. With Section 21 abolished, it is now the principal route to possession. From 1 May 2026 the notice must be given on the updated Form 3A.
Section 21 Notice
A Section 21 notice was the no-fault eviction notice that allowed a landlord to end an assured shorthold tenancy without giving a reason. It was abolished on 1 May 2026 by the Renters' Rights Act 2025. Where a valid Section 21 notice was already served before that date, the deadline to apply to court is 31 July 2026.
Selective Licensing
Selective licensing is a scheme a council can designate that requires every private rented property in a defined area to hold a licence, whether or not it is an HMO. It is used to tackle issues such as poor housing conditions or anti-social behaviour. Operating an unlicensed property in a selective licensing area can attract a civil penalty of up to £40,000.
Stay legal. Avoid fines. Get the weekly compliance briefing. Start with the free digest and know what changed before it costs you.