When Does a Tenant Become a Sitting Tenant UK - What Landlords and Buyers Need to Know

Find out when a tenant is considered a sitting tenant, the difference between a tenant in situ and a protected regulated tenant, and what this means when buying or selling property

The phrase “sitting tenant” can be confusing because it is used differently in everyday property transactions and in the context of older protected tenancies.

In simple terms, a tenant may be described as a sitting tenant when they are already living in a property and remain there when the property is sold to a new owner. The new owner normally becomes their landlord and the existing tenancy continues.

However, there is an important distinction between an ordinary tenant in situ and a genuine regulated tenant with historic security of tenure.

Does a tenant automatically become a sitting tenant after living somewhere for a certain number of years?

No.

There is no rule saying that a tenant becomes a sitting tenant after living in a property for five, ten or twenty years.

The phrase does not generally depend simply on how long the tenant has lived there.

A tenant who has lived in a property for two years can be described as a tenant in situ if the property is sold with them remaining. Equally, someone who has lived in the property for 30 years may have a different tenancy with stronger statutory protections.

The type and history of the tenancy are much more important than the number of years the tenant has lived there.

What is a sitting tenant in modern property sales?

In today's property market, “sitting tenant” is often used to mean a tenant in situ.

For example, imagine a landlord owns a three-bedroom house in London and rents it to a tenant. The landlord decides to sell the property but does not require the tenant to leave.

The property is sold while the tenant remains in occupation.

The buyer then becomes the landlord and takes on the existing tenancy.

In this situation, the tenant is commonly described as a sitting tenant or tenant in situ.

The tenant does not gain a special lifetime tenancy simply because the property has been sold.

When is someone a genuine protected sitting tenant?

The phrase has a more specific historical meaning when referring to a regulated tenancy under the Rent Act 1977.

Government guidance explains that, for its purposes, a sitting tenant generally refers to someone with indefinite or long-term security of tenure, including tenants whose arrangements are analogous to regulated tenancies under the Rent Act 1977.

A private tenancy that began before 15 January 1989 may potentially be a regulated tenancy, although the exact circumstances and tenancy history must be examined.

These tenants can have significantly stronger protection than ordinary modern private tenants. Shelter notes that regulated tenants retain their protected status despite the private renting changes introduced in 2026.

Does living in a property before 1989 automatically make you a sitting tenant?

No.

The date is an important starting point, but it does not automatically prove that the tenancy is regulated.

You need to establish:

• When the tenancy began

• What type of tenancy it was

• Whether the tenancy was replaced or altered

• Whether the tenant or landlord changed

• Whether any succession took place

• Whether the property has remained subject to the relevant tenancy

A tenancy document from the 1980s can therefore be extremely important when determining the tenant's legal status.

What if the tenant moved in after 1989?

A tenant who started renting after 15 January 1989 would generally not have a new Rent Act regulated tenancy simply because they have lived in the property for many years.

However, they can still be a tenant in situ if they remain in the property when it is sold.

This distinction matters when a property is advertised as being sold with a “sitting tenant”.

A buyer should establish exactly what the seller means by that term before making an offer.

Does a sitting tenant have to leave when the property is sold?

Generally, no.

If a property is sold with a tenancy continuing, the tenant does not normally have to leave simply because ownership has changed.

The buyer takes over as landlord and the tenant's existing legal protections continue according to the applicable tenancy rules.

This is why a property being sold with a tenant in situ can be attractive to an investor seeking rental income from completion.

Can a landlord make a tenant leave just because they want to sell?

Not simply because they want to sell.

For private rented properties in England, the rules changed on 1 May 2026. Most assured shorthold tenancies moved into the new assured periodic tenancy framework, and landlords must generally rely on a statutory possession ground rather than using the former Section 21 route.

The Renters' Rights Act introduced Ground 1A, which allows eligible landlords to seek possession where they genuinely intend to sell the property, subject to the statutory requirements.

A landlord must still follow the correct notice and court process where required.

Can a buyer evict a sitting tenant after purchasing the property?

Buying the property does not give the buyer an automatic right to remove the tenant.

If the tenancy continues after completion, the buyer becomes the landlord and must comply with the applicable possession rules.

This is particularly important when purchasing a property advertised as:

“Sold with sitting tenant”

Before completing the purchase, the buyer should establish whether they are buying:

• A property with an ordinary tenant in situ

• A property with a regulated tenancy

• A property with rent arrears

• A property subject to possession proceedings

• A property with another form of occupancy arrangement

The financial implications can be very different.

Why does a sitting tenant matter to property value?

A tenant in situ can be positive for an investor because the property may produce rental income immediately.

However, it can also reduce the pool of potential buyers if the buyer wants vacant possession.

A genuine regulated tenant can have an even greater impact on value because of the stronger security of tenure attached to the tenancy.

This is why buyers should never rely solely on an estate agent's description of a property as having a “sitting tenant”.

The underlying tenancy documents should be reviewed.

How can you tell if a property has a genuine sitting tenant?

Before buying or selling, obtain and review:

• The original tenancy agreement

• Any subsequent tenancy agreements

• Rent records

• Notices served on the tenant

• Evidence of changes in landlord

• Succession documents where applicable

• Deposit information where relevant

• Records of rent increases

• Any court orders or possession proceedings

If the tenancy may date back to before 15 January 1989, specialist legal advice should be obtained before assuming that it is an ordinary modern tenancy.

How Fraser Bond can help with tenanted property sales

Selling or purchasing property with a tenant already in occupation requires careful preparation, particularly where vacant possession is required or the tenancy may have historic protections.

Fraser Bond can support landlords and property investors with property sales, lettings, property management, tenancy administration and wider property services across London and the UK.

Before marketing or purchasing a property with a “sitting tenant”, establish the exact tenancy status first. The difference between an ordinary tenant in situ and a protected regulated tenant can have a significant effect on the property's value, sale strategy and possession options.