A Flatmate Agreement is a written contract used in England and Wales to set out the rights, responsibilities, and house rules between individuals sharing a flat, house, or other residential property. Unlike a formal tenancy agreement between a landlord and tenant, a flatmate agreement typically governs the relationship between the people living together in the property, covering practical matters such as who occupies which room, how rent and bills are divided, the rules for guests, cleaning, pets, smoking, and the procedure for ending the arrangement.

The legal status of a flatmate depends on their relationship with the property and the main tenancy. There are two principal categories. First, a flatmate may be an excluded occupier (or licensee), which is the most common arrangement where one person holds the main tenancy and allows another to share the property. An excluded occupier does not have exclusive possession of the property and shares living accommodation with the tenant. Under the Housing Act 1988 and the Protection from Eviction Act 1977 (section 3A), an excluded occupier has significantly fewer statutory protections than an assured shorthold tenant. In particular, the tenant (or resident landlord) does not need to obtain a court order for possession and is not required to protect the excluded occupier's deposit in a government-approved scheme under the Housing Act 2004.

Second, a flatmate may be a joint tenant, meaning they are named alongside the existing tenant(s) on the main tenancy agreement with the landlord. In this case, all joint tenants are jointly and severally liable for the full rent and all other obligations under the tenancy, and each has full statutory rights under the Housing Act 1988, including security of tenure and the right to have their deposit protected.

It is important to understand that even where a written agreement labels the arrangement as a 'licence', the courts will look at the substance of the arrangement rather than the label. Following the landmark Supreme Court decision in Street v Mountford [1985] AC 809, if the occupier has exclusive possession of a defined space, pays rent, and there is no genuine sharing of living accommodation, a court may find that a tenancy has been created regardless of what the agreement says.

Flat-sharing is extremely common in England and Wales, particularly in cities such as London, Manchester, Birmingham, and Bristol where housing costs are high. A well-drafted flatmate agreement helps prevent misunderstandings and disputes by recording the expectations of all parties clearly. While a flatmate agreement between occupiers is not a substitute for a formal tenancy agreement with the landlord, it serves an important complementary function in managing the day-to-day practicalities of shared living.

A Flatmate Agreement should be used in any of the following situations in England and Wales:

When an existing tenant wishes to bring in a new person to share the flat or house. This is the most common scenario and typically arises when a flatmate moves out and a replacement is needed. The incoming flatmate will usually be an excluded occupier (licensee) who pays a share of the rent to the lead tenant, who in turn pays the landlord. The lead tenant should check their tenancy agreement to confirm that subletting or sharing is permitted; many assured shorthold tenancies require the landlord's prior written consent under section 15 of the Housing Act 1988.

When a group of friends or colleagues decide to rent a property together and one person is named as the lead tenant. The flatmate agreement records the internal arrangement between the flatmates, including how rent and bills are split, even though the formal tenancy agreement with the landlord may name only one person.

When a resident landlord lets individual rooms in their own home to multiple occupiers. In this case, each occupier is an excluded occupier under paragraph 10 of Schedule 1 to the Housing Act 1988, and the landlord does not need to provide the statutory prescribed documents or protect deposits in a government-approved scheme.

When students share university accommodation under a joint tenancy. A flatmate agreement supplements the main tenancy and helps manage expectations around cleaning, quiet hours, and shared expenses.

A Flatmate Agreement is NOT a substitute for a formal tenancy agreement with the landlord. If you are a landlord letting a property to tenants, you should use an Assured Shorthold Tenancy (AST) Agreement or, if you are a resident landlord, a Lodger Agreement. The flatmate agreement governs the relationship between the occupiers themselves.

Before entering into any flat-sharing arrangement, all parties should be aware that the lead tenant remains liable to the landlord for the full rent and all tenancy obligations. If a flatmate fails to pay their share, the lead tenant is still responsible for paying the landlord. This is why a written flatmate agreement with clear payment terms and a deposit is essential for protecting the lead tenant's financial position.

A well-drafted Flatmate Agreement for England and Wales should include the following key elements:

1. Parties: The full names and contact details of the lead tenant (or resident landlord) and all flatmates. If there are multiple flatmates, all should be named so that the house rules bind everyone.

2. Occupier status: A clear statement of whether the flatmate is an excluded occupier (licensee) or a joint tenant. This is the single most important legal distinction in the agreement, because it determines the flatmate's statutory rights. An excluded occupier has no security of tenure under the Housing Act 1988 and does not benefit from the tenancy deposit protection requirements of the Housing Act 2004. A joint tenant has full statutory rights and obligations.

3. Room allocation: A clear description of which room the flatmate will occupy and a list of the shared facilities (kitchen, bathroom, living room, garden, etc.) that the flatmate may use in common with the other occupiers.

4. Rent and bills: The flatmate's monthly rent contribution, the due date, the payment method, and to whom the payment is made (lead tenant or landlord directly). The arrangement for splitting household bills (gas, electricity, water, broadband, council tax) should also be clearly stated.

5. Deposit: The amount of any deposit, who holds it, and the terms for its return. For excluded occupiers, the statutory deposit protection requirements do not apply, but the agreement should state when and how the deposit will be returned and the circumstances in which deductions may be made.

6. Notice period: The notice required by either party to end the arrangement. For an excluded occupier, there is no statutory minimum notice period under the Protection from Eviction Act 1977 (section 3A), but the agreement should specify a reasonable period, typically one calendar month.

7. House rules: Clear rules covering guests and overnight visitors, cleaning rotas and responsibilities for shared areas, pets, smoking, quiet hours, and the use of communal spaces. These provisions are essential for preventing the most common sources of flatmate disputes.

8. Termination: The procedure for ending the agreement, including the notice period, the requirement to return keys and remove personal belongings, and the timeline for returning the deposit.

9. Dispute resolution: A provision encouraging the parties to resolve disputes by informal discussion or mediation before resorting to legal proceedings.

10. Governing law: The laws of England and Wales.