Wilma Petru Kooij and Magdalena Maria Kruger and Jacobus Christoffel Kruger (In their capacities as Trustees of Daleen Kruger Trust) v Middleground Trading 251 CC and Dirk Jakobus Fourie

On 30 September 2005, the Daleen Kruger Trust (the Trust) entered into an agreement with Middleground Trading 251 CC (Middleground) regarding peat extraction from a wetlands area on the Trust's farm. The agreement was described as a "Rent and rental Agreement" and required Middleground to pay a minimum of R15,000 per month, with additional payments based on the volume of peat extracted above 600m³ per month. The agreement was initially for three years but was extended twice to September 2014. Middleground paid the minimum monthly amount for the first ten months while setting up operations, with these amounts reflected as credits in reconciliation statements. On 17 November 2011, the Department of Environmental Affairs issued a Compliance Notice directing that peat extraction cease immediately, all machinery be removed, and access points be barricaded. Middleground stopped extracting peat and made its last payment in February 2012. The Trust subsequently claimed arrear rental of R1,051,796.99 for the period March 2012 to September 2014.

• Whether the agreement was a lease of immovable property or a grant of dominant right to extract peat
• Whether the minimum monthly payment of R15,000 constituted rental or prepayment for peat to be extracted
• Whether a tacit term should be imported into the agreement that payments were only due while Middleground could legitimately extract peat
• Whether the Compliance Notice issued by the Department of Environmental Affairs constituted vis major of a permanent nature excusing Middleground from its payment obligations

The appeal was dismissed with costs.

The ratio decidendi is that in determining the nature of a contract, courts must look beyond labels and terminology used by parties to examine the substance of rights and obligations created. Where an agreement grants rights to extract and consume the substance of property (ius abutendi), this is the dominant characteristic even if the agreement contains lease-like elements such as payment of monthly amounts and access to property. The proper test is to consider the agreement as a whole in its commercial context. A prepayment for goods to be extracted (subject to reconciliation based on actual extraction) is fundamentally different from rental payable for use and enjoyment of property regardless of what is extracted. Where the primary purpose is extraction of a resource, payments linked to and reconcilable against actual extraction constitute prepayment for the resource, not rental. Additionally, where performance becomes impossible due to regulatory prohibition that is not attributable to the obligor's fault and where the prohibition is of a permanent nature making resumption of activities highly unlikely within the contract period, this constitutes supervening impossibility excusing further performance.

The Court made observations regarding the admissibility of evidence of subsequent conduct in contract interpretation. While such evidence may be used, it is subject to three provisos: (1) it must indicate a common understanding of the terms and meaning of the contract; (2) it may be used as an aid to interpretation and not to alter the words used by the parties; and (3) it must be used as conservatively as possible. The Court noted that where parties' subsequent conduct does not establish a clear common understanding, it should not be given weight. The Court also observed that the fact a party does not file a counterclaim for amounts it claims are owed cannot be used to infer acceptance of the opposing party's characterization of the agreement, as there may be various commercial reasons for not pursuing such a claim.

This case clarifies important principles in South African contract law regarding: (1) the interpretation of agreements and the principle that labels and terminology used by parties are not determinative - courts must examine the substance and true nature of performance agreed upon; (2) the distinction between lease agreements and agreements granting dominant rights (particularly ius abutendi - right to consume or dispose of the substance); (3) the circumstances in which tacit terms will be imported into contracts based on business efficacy; (4) the doctrine of supervening impossibility of performance and vis major in the context of regulatory intervention; (5) the application of the Oudekraal principle that administrative action remains in force until set aside. The judgment demonstrates how courts will look beyond contractual labels to ascertain the true commercial substance of agreements, particularly in the context of mineral/natural resource extraction rights.