Cohabitation Agreement (Hong Kong)

A Cohabitation Agreement in Hong Kong sets out the rights and obligations the parties agree to be bound by.

Hong Kong has no equivalent of Australia’s De Facto Relationships Act or New Zealand’s Property (Relationships) Act. The Matrimonial Proceedings and Property Ordinance (Cap. 192) applies exclusively to married spouses and confers no rights on unmarried cohabitants. Section 4 of Cap. 192 limits ancillary relief applications to parties to a marriage — unmarried cohabitants have no equivalent statutory claim. Under Hong Kong intestacy law (the Intestates’ Estates Ordinance, Cap. 73), Section 4 of Cap. 73 lists the persons entitled to an intestate estate, and an unmarried partner is not among them — unlike a spouse, who is a primary beneficiary.

Without a written cohabitation agreement, an unmarried partner who has contributed financially to a shared home held in the other’s sole name must rely on the equitable doctrines of resulting trusts (where they contributed to the purchase price), constructive trusts (where there was a common intention that both would have an interest), or proprietary estoppel (where they relied on a representation to their detriment) to establish any legal interest. Litigation based on these doctrines is expensive, uncertain, and often distressing. A cohabitation agreement removes this uncertainty by recording the parties’ intentions in writing.

For a cohabitation agreement to be enforceable under Hong Kong contract law, it must satisfy the standard requirements: offer and acceptance, consideration, certainty of terms, and an intention to create legal relations. Domestic arrangements between cohabitants are sometimes presumed not to be intended as legally binding contracts — an express statement in the agreement that it is intended to create legal relations is therefore important. Both parties should receive independent legal advice before signing, and the agreement should ideally be executed as a deed to maximise enforceability.

Property held in joint names as joint tenants (with a right of survivorship under the Conveyancing and Property Ordinance, Cap. 219) is treated differently from property held as tenants in common (where each party holds a defined share). Section 27 of the Conveyancing and Property Ordinance (Cap. 219) governs co-ownership of land and allows parties to sever a joint tenancy in writing. A cohabitation agreement can specify the intended basis of co-ownership and the parties’ respective shares, which serves as evidence in any dispute and can be lodged at the Land Registry. Stamp duty under the Stamp Duty Ordinance (Cap. 117) applies to any instrument affecting property rights.

Where children are involved, provisions about parenting arrangements in a cohabitation agreement are subject to the overriding jurisdiction of the Family Court under the Guardianship of Minors Ordinance (Cap. 13). Section 3 of Cap. 13 provides that the welfare of the child shall be the first and paramount consideration — the court will not enforce any cohabitation agreement provision that conflicts with this principle. Related documents in a complete family planning framework include a Prenuptial Agreement, Postnuptial Agreement, Maintenance Agreement, and Child Custody Agreement.

A Cohabitation Agreement in Hong Kong is needed when unmarried partners wish to document their financial and property arrangements at the outset of cohabitation, rather than relying on equitable doctrines to reconstruct their intentions if the relationship ends.

Partners purchasing property together in Hong Kong need a cohabitation agreement to record each party’s contribution to the purchase price and deposit, the intended basis of co-ownership (joint tenants or tenants in common with specified shares), and the agreed procedure for sale or buyout if the relationship ends. Hong Kong residential property prices make this one of the highest-stakes financial decisions most individuals make, and the absence of written documentation creates serious legal risk if the relationship breaks down.

A partner moving into a home owned solely by the other partner needs a cohabitation agreement to clarify whether they are acquiring any interest in the property through their financial contributions — for rent, mortgage payments, renovations, or household expenses — or whether they are contributing as a licensee with no ownership rights. Without a written agreement, the contributing partner may struggle to recover their contributions if asked to leave.

Partners with significant income disparities need a cohabitation agreement to address ongoing financial support arrangements during the relationship and any transitional support after separation. Hong Kong law provides no statutory right to maintenance for unmarried cohabitants following separation — unlike married couples, who can apply to the District Court or Family Court under Cap. 192.

Cohabitants who have or are planning to have children need a cohabitation agreement that addresses parenting responsibilities, the financial support of children, and housing arrangements if the relationship ends. Unmarried fathers in Hong Kong do not have automatic parental rights — a court order under the Guardianship of Minors Ordinance (Cap. 13) or a formal parenting agreement is needed to document the father’s role.

Long-term cohabitants who have built up significant shared assets — furniture, vehicles, savings, business interests, and MPF benefits — need a cohabitation agreement to record the ownership of these assets and the agreed division on separation. MPF nominations are made individually and are not automatically affected by a cohabitation arrangement, making express provisions on MPF important.

Partners with different nationalities or who own assets in multiple jurisdictions need a cohabitation agreement that addresses the governing law (Hong Kong) and any cross-border property issues, particularly given the differences between Hong Kong law and mainland China law regarding property rights of unmarried partners.

A Hong Kong Cohabitation Agreement must include the following key elements to provide effective legal protection for both parties under Hong Kong common law.

Party identification states each party’s full legal name, Hong Kong Identity Card number (HKID) or passport number (for non-residents), current residential address, and any prior name. Precise identification prevents later arguments about which persons are bound by the agreement.

Declaration of intent expressly states that the parties intend the agreement to be legally binding and to create legal relations, overcoming the presumption that domestic arrangements are not intended to have contractual force. Both parties should acknowledge that they have received or have had the opportunity to receive independent legal advice.

Shared home provisions address the most financially significant matter in most cohabitation arrangements. The clause should identify the property by its address and Land Registry lot number, state whether it is held as joint tenants or tenants in common (and if the latter, each party’s share), record each party’s financial contribution to the purchase price and deposit, and set out the agreed procedure for buyout or sale if the relationship ends — including who has the right to remain during any sale process and how the net proceeds are divided after repaying the mortgage under any instrument registered at the Land Registry under the Land Registration Ordinance (Cap. 128).

Financial contributions during cohabitation specify how household expenses — mortgage payments, rent, utilities, food, insurance, and maintenance costs — are divided between the parties. Common arrangements include equal sharing, proportionate sharing based on income, or one party meeting specified categories of expense.

Personal property records ownership of significant assets including vehicles, furniture, artwork, cryptocurrency, and other valuables. Items acquired before cohabitation remain the sole property of the acquiring party; items acquired jointly should have their ownership recorded with the intended share.

Bank accounts and savings address joint and separate accounts, the purpose of each account, and each party’s rights over joint account funds during the relationship and on separation.

Separation provisions set out the agreed procedure and timeline for resolving property and financial arrangements if the relationship ends — including who must leave the shared home, the timeframe for buyout or sale, and how shared property is valued and divided. A clear separation mechanism prevents the most destructive disputes.

Children’s arrangements record any agreed parenting arrangement, financial support for children, and housing provisions, subject always to the paramountcy of the child’s welfare under the Guardianship of Minors Ordinance (Cap. 13) and the Family Court’s jurisdiction.

Debts and liabilities allocate responsibility for existing debts and any debts incurred during the relationship, preventing one party from being liable for the other’s financial obligations.

Dispute resolution provides for mediation before litigation, naming the Hong Kong Mediation Centre or another recognised service. Mediation is strongly preferred in family-adjacent disputes due to its lower cost, confidentiality, and preservation of relationships.

Statutory cross-references: Section 27 of the Conveyancing and Property Ordinance (Cap. 219) governs co-ownership of land and severance of joint tenancy. Section 4 of the Intestates' Estates Ordinance (Cap. 73) lists intestacy beneficiaries, excluding unmarried partners. Section 3 of the Guardianship of Minors Ordinance (Cap. 13) establishes the paramountcy of child welfare. Section 19 of the Personal Data (Privacy) Ordinance (Cap. 486) grants data access rights. Section 4 of the Matrimonial Proceedings and Property Ordinance (Cap. 192) limits ancillary relief to married spouses only. The Family Court, Land Registry, and Hong Kong Mediation Centre are the principal institutions involved in cohabitation dispute resolution.

Governing law and signatures confirm Hong Kong law governs the agreement, and both parties sign before independent witnesses. Forms-legal.com provides this template as part of a family law suite that includes Prenuptial Agreements, Postnuptial Agreements, and Deed of Separation templates.