Yeoman's Row Management Limited (Appellants) and another v Cobbe (Respondent)

Proprietary estoppel does not provide expectation-based relief merely because a party has behaved unconscionably. A claimant must identify a sufficiently certain proprietary interest and the matter which the defendant is to be estopped from asserting. An experienced commercial party who knowingly relies on an incomplete and legally unenforceable land agreement, anticipating further negotiations and a formal contract, has only a speculative expectation.

A constructive trust should not ordinarily be imposed over land owned before an abortive joint venture where the parties’ arrangement remained incomplete. If services were knowingly supplied for reward in anticipation of a contract which never materialised, the provider may instead recover a quantum meruit. The measure is the reasonable value of the services and expenditure, not the resulting increase in the land’s value.

In Yeoman's Row Management Limited (Appellants) and another v Cobbe (Respondent), an experienced property developer obtained planning permission for the redevelopment of the appellant company’s land. He acted under an oral agreement in principle whose principal financial terms had been settled, but both parties knew that it was not legally binding and that further terms required negotiation. After permission was obtained, the landowner repudiated the agreed financial terms.

Etherton J held that proprietary estoppel entitled the developer to half the increase in the property’s value and secured that award by a lien. The Court of Appeal dismissed the company’s appeal in [2006] EWCA Civ 1139, although it allowed Mrs Lisle-Mainwaring’s separate appeal concerning extension of the lien to her leasehold interest.

The central issue before the House was whether the developer was entitled to a proprietary remedy reflecting his disappointed expectations or only to personal restitutionary relief for the services and expenditure from which the landowner benefited.

1. Appeal allowed unanimously. Lord Scott of Foscote delivered the leading speech. Lords Hoffmann and Brown agreed with his reasons. Lord Mance also agreed, save that he expressed no view on whether the appellant’s £150,000 offer indicated the amount of the quantum meruit. Lord Walker reached the same result in a separate concurring speech.

2. Proprietary estoppel. Per Lord Scott, unconscionable conduct may justify a remedy, but it cannot substitute for the ingredients of proprietary estoppel. There must be clarity about what the defendant is to be estopped from denying or asserting and about the proprietary interest which that assertion would otherwise defeat. The developer expected further negotiations to produce a formal contract; he did not expect to acquire a certain interest in the land independently of that contract. His expectation was therefore speculative.

   Lord Walker similarly emphasised that equitable estoppel must be applied in a disciplined manner. Both experienced parties knew that their arrangement was not legally binding. Conscious reliance on the other party’s honour did not create an equitable entitlement. Lord Scott regarded the landowner’s conduct as unconscionable but insufficient to establish estoppel; Lord Walker regarded it as unattractive but not unconscionable in the equitable sense. This difference did not affect the result.

3. Statutory formality. Per Lord Scott, section 2(1) of the Law of Property (Miscellaneous Provisions) Act 1989 made the abandoned contractual claims untenable. The agreement was also incomplete. It was therefore unnecessary to decide whether proprietary estoppel could ever enforce a complete agreement rendered void by section 2. Lord Scott’s provisional view was that equity could not contradict the statute. Section 2(5), however, expressly preserved resulting, implied and constructive trusts.

4. Constructive trust. Per Lord Scott, a constructive trust may arise where joint venturers agree to acquire identified land for their joint purposes and one acquires it in his own name before seeking to retain it exclusively. That principle did not apply here. The company owned the property before the negotiations, the arrangement was incomplete and unenforceable, and the developer never expected an interest except under a future enforceable contract. Unconscionable withdrawal alone did not justify divesting the company of a beneficial interest.

5. Personal restitutionary relief. Per Lord Scott, the company was unjustly enriched because it received the developer’s services in obtaining planning permission without paying for them. The enrichment was the value of those services, not the full increase in the property’s market value. The developer was entitled to a quantum meruit comprising reasonably incurred expenditure and an appropriate fee for an experienced developer, without double counting consultants’ fees. A restitutionary claim based on total failure of consideration would be co-extensive.

6. Order. The proprietary orders were discharged. Subject to permitting use of the architects’ plans, the quantum meruit was to be agreed or assessed in the Chancery Division. The developer was required to repay the £2 million previously received, with the quantum meruit set off against that liability and £150,000 retainable pending assessment.

• House of Lords: In Yeoman's Row Management Limited (Appellants) and another v Cobbe (Respondent) [2008] UKHL 55, the House unanimously allowed the appeal, discharged the proprietary orders and substituted an order for a quantum meruit.
• Court of Appeal: In [2006] EWCA Civ 1139, the court dismissed the company’s appeal from the principal proprietary-estoppel order. It allowed Mrs Lisle-Mainwaring’s separate appeal against extension of the lien to her leasehold interest.
• High Court, Chancery Division: Etherton J held on 25 February 2005 that proprietary estoppel entitled Mr Cobbe to half the increase in the property’s value attributable to planning permission, secured by a lien. A supplemental judgment of 12 August 2005 addressed valuation and extended the lien.