Constructive trusts — common intention and the family home

The common intention constructive trust is the modern English device by which equity recognises beneficial interests in the family home where legal title does not state, or does not accurately state, the parties’ beneficial ownership. It sits at the junction of land law, unjust enrichment, equity, family property and social policy. It is also one of the least elegant parts of the law of trusts. Its vocabulary is that of intention; its practical concern is often fairness; its legal form remains proprietary.

The problem is familiar. A house is bought for occupation by an unmarried couple or other domestic partners. Title is placed in one name, or in joint names without an express declaration of beneficial shares. Contributions are made in different forms: deposit, mortgage instalments, renovation, household bills, childcare, business support, or the assumption of financial risk. The relationship then ends. The court must decide whether the non-owner has any beneficial interest, or whether joint legal owners hold in equal or unequal shares. Since marriage and civil partnership bring statutory redistributive powers, the sharpest significance of the doctrine is for cohabitants, although the principles are not confined to sexual or domestic relationships.

The doctrine must be distinguished from the resulting trust studied in Week 5. A resulting trust looks, classically, to contributions to the purchase price and applies a presumption as to beneficial ownership. A common intention constructive trust asks whether the parties had a shared intention that beneficial ownership should be held in a particular way, and whether the claimant acted to his or her detriment in reliance upon that intention. The language of common intention is not always literal. The court may infer intention from conduct; after Stack v Dowden and Jones v Kernott it may, at least when quantifying shares, impute an intention which the parties never consciously formed. This is the source of both the doctrine’s flexibility and its intellectual instability.

For Cambridge purposes, the topic repays close attention because it tests method. A good answer does not merely recite Pettitt, Gissing, Rosset, Stack and Jones. It asks what kind of constructive trust this is: institutional or remedial; intention-based or fairness-based; proprietary or redistributive; exceptional or routine. It asks whether sole-name and joint-name cases are governed by the same principles. It explains why express declarations of trust are decisive save for exceptional vitiating factors. It recognises that modern authority has moved beyond the narrow approach in Rosset, while also noting that Rosset has not been formally overruled in sole-name cases. It is essential to keep two questions separate: acquisition, meaning whether a beneficial interest exists at all; and quantification, meaning the size of that interest. Many weak examination answers collapse the two.

The family-home cases are not a licence for judicial benevolence. Equity does not simply redistribute property because a relationship has been long, intimate or economically interdependent. Yet neither does it remain confined to the arid mathematics of purchase-money contributions. The present law attempts to reconcile party autonomy, security of title, domestic reality and relational fairness. Its difficulty is that those values pull in different directions. A strong Tripos answer will expose that tension rather than conceal it.

The modern family-home constructive trust developed against the inadequacy of two older techniques: the resulting trust and the statutory law of matrimonial property. Resulting trusts, in their classical purchase-money form, were well suited to commercial acquisition. If A paid part of the price but title was taken in B’s name, equity could presume that B held proportionately for A. That approach gave priority to financial contribution at the moment of acquisition. It was ill adapted to domestic life, in which parties often do not bargain expressly about ownership, may divide labour on gendered lines, and may make contributions indirectly by enabling the other to pay mortgage instalments or by assuming domestic responsibilities.

Before the modern cohabitation cases, married parties were often considered through a different lens. Matrimonial Causes legislation gave courts powers to adjust property rights on divorce, but those powers did not extend to unmarried cohabitants. In Pettitt v Pettitt and Gissing v Gissing the House of Lords rejected a broad judicial discretion to allocate property according to what appeared fair. That rejection is crucial. English law did not adopt a general community-property regime for domestic partners. The claimant had to establish a recognised equitable entitlement. The constructive trust emerged as the vehicle through which that entitlement could be found.

Gissing supplied the basic architecture. Where there was no express declaration of beneficial ownership, the court could infer a common intention from the parties’ conduct, and equity would prevent the legal owner from denying the claimant’s beneficial interest where the claimant had acted to his or her detriment. But the early authorities remained conservative. Direct contributions to the purchase price or mortgage were treated as the paradigm evidence from which common intention could be inferred. Contributions to housekeeping or family life, unless directly referable to acquisition, were usually insufficient. The result was that many economically significant but non-financial forms of contribution were invisible.

Lloyds Bank plc v Rosset crystallised that restrictive approach. Lord Bridge divided cases into two categories: first, those involving express discussions or agreement, however imprecise; secondly, those in which common intention was inferred from conduct, where direct contributions to purchase price or mortgage would be necessary or at least overwhelmingly significant. Rosset became the standard doctrinal statement for more than a decade. It had the virtue of certainty and protected registered title, lenders and third parties. But it also froze the doctrine in a form that many thought socially unrealistic. It privileged market payments over domestic partnership.

From the late 1990s and early 2000s, judicial and academic dissatisfaction grew. The Court of Appeal in Oxley v Hiscock softened quantification in cases where the claimant had acquired some interest, asking what share was fair having regard to the whole course of dealing. The decisive shift came in Stack v Dowden, a joint-name case. The House of Lords held that where a domestic home is conveyed into joint names, the starting point is joint beneficial ownership. That presumption may be displaced by evidence that the parties’ common intention was different, judged by their whole course of conduct. Jones v Kernott then confirmed that common intention may change over time and that, where actual intention cannot be inferred, the court may impute an intention as to shares which the parties, objectively assessed, should be taken to have had.

The historical movement is therefore from contribution to intention, and from intention towards contextual fairness. But the law has not wholly abandoned the older structure. Express declarations remain dominant; acquisition remains harder than quantification; sole-name cases still require proof of a common intention and detrimental reliance; and the Supreme Court has repeatedly denied that the court enjoys a free-standing discretion to do what is fair. That is the doctrinal tension which defines the topic.

1. Begin with title and any express declaration. The first question is always legal title. Is the property in the sole name of one party, or in joint names? If title is joint, is there an express declaration of beneficial ownership, for example in the transfer form? An express declaration of trust as to beneficial interests is normally conclusive, absent fraud, mistake, undue influence, proprietary estoppel or other vitiating circumstances. The common intention constructive trust is not a device for improving a bad bargain or revisiting a clear declaration because the relationship has become unhappy.

1. Distinguish sole-name and joint-name cases. In a sole-name case, the claimant must establish that he or she has acquired a beneficial interest. The legal owner is presumed to hold beneficially as well as legally unless the claimant proves otherwise. In a joint-name case, the starting point after Stack v Dowden is that equity follows the law: joint legal owners are presumed to be joint beneficial owners. The burden is on the party asserting that beneficial ownership differs from legal ownership. This distinction is central. A sole-name claimant is trying to enter the proprietary picture; a joint-name claimant is usually trying to depart from equal beneficial ownership.

1. Acquisition in sole-name cases requires common intention and detrimental reliance. The claimant must show a common intention, shared between the parties, that the claimant should have a beneficial interest, and detrimental reliance by the claimant on that intention. The common intention may be express or inferred. Express discussions need not be contractual; domestic arrangements are often informal. But there must be something more than unilateral hope, moral expectation, or the mere fact of cohabitation. Detrimental reliance ensures that the trust is not imposed simply because of intention in the abstract. Equity intervenes because it would be unconscionable for the legal owner to deny the claimant’s interest after the claimant has acted on the shared understanding.

1. Express common intention. The strongest case is one involving words: for example, assurances that the home is ours, that the claimant will have a share, or that title is in one name only for convenience. Rosset accepted that express discussions, however imperfectly remembered, may found a common intention. But words must be examined carefully. Loose domestic language is not always proprietary. A statement of emotional belonging is not necessarily a declaration of beneficial ownership. Conversely, the domestic setting means the court need not demand commercial precision. The question is whether, objectively assessed in context, the parties shared an understanding that the claimant was to have a beneficial interest.

The landmark cases show a movement from suspicion of judicial discretion to a more contextual account of domestic ownership. Pettitt v Pettitt and Gissing v Gissing set the initial boundaries. They rejected the idea that courts could reallocate beneficial ownership merely because fairness required it. Lord Diplock’s speech in Gissing became the foundation for the common intention constructive trust: equity might enforce a shared intention, inferred where appropriate from conduct, where the claimant had acted to his or her detriment. But the early doctrine remained limited. It recognised that intention could be inferred, while giving little room to infer it from non-financial domestic contributions.

Lloyds Bank plc v Rosset then became the classic restrictive statement. Lord Bridge identified two routes: express agreement or arrangement, and inferred intention from conduct. In the second route, he treated direct contributions to the purchase price or mortgage as the necessary or near-necessary evidence. Rosset is still indispensable in exams because it marks the high point of formalism. It also illustrates why lenders cared about certainty: the dispute arose in the context of a bank seeking possession. A proprietary interest discovered too readily after the event can prejudice third parties.

The Court of Appeal in Oxley v Hiscock shifted the emphasis at the quantification stage. The parties had both contributed, but in unequal and informal ways. Chadwick LJ held that where the court could not ascertain the parties’ actual agreement about shares, each was entitled to the share the court considered fair having regard to the whole course of dealing. This was not yet the final form of the law, but it prepared the ground for Stack.

Stack v Dowden is the watershed. The property was in joint names, but the parties had maintained unusually separate finances and made unequal contributions. The House of Lords held that the presumption of joint beneficial ownership could be rebutted. Baroness Hale’s speech listed factors capable of evidencing a different common intention and made clear that the domestic context could not be reduced to initial purchase contributions. Stack is often misunderstood as creating a general fairness discretion. It did not. It adopted a contextual search for shared intention, albeit one in which fairness plainly influenced the evaluation.

Abbott v Abbott, a Privy Council decision delivered shortly after Stack, reinforced the move away from Rosset’s narrowness by emphasising the parties’ whole course of conduct. Jones v Kernott then resolved, or appeared to resolve, a central problem: what if the parties had once held equally but their intentions later changed? The Supreme Court held that common intention may alter over time and that, where actual intention as to shares cannot be inferred, the court may impute an intention. Jones therefore legitimates imputation at quantification.

Later cases reveal continuing limits. Curran v Collins shows the difficulty for sole-name claimants who cannot prove an express or inferred common intention. The claimant had worked in family businesses and lived with the defendant for many years, but the Court of Appeal refused to find a beneficial interest. The case is a warning against treating cohabitation, contribution to life together, or general unfairness as sufficient. The modern doctrine is broader than Rosset, but it remains tethered to intention and detrimental reliance.

See practice questions section below.

See further reading section below.