City of Tshwane Metropolitan Municipality v Brooklyn Edge (Pty) Ltd and Another

On 31 July 2003, the City of Tshwane Metropolitan Municipality (the City) sold immovable properties (erven in Muckleneuk comprising public open space) to Brooklyn Edge (Pty) Ltd (first respondent) for R9.5 million. The deed of sale provided that the properties would be transferred after closure of the public open space and rezoning. A 10% deposit was paid. The balance (R8 550 000) plus interest would be payable against registration of transfer. Interest would only accrue after 18 months or after closure and rezoning, whichever came first. If closure and rezoning were not finalised successfully, the transaction would be deemed mutually cancelled. The City obstructed finalisation of both the closure (failing to submit required closure certificate to Surveyor-General and Registrar of Deeds) and rezoning (unreasonably delaying determination). Brooklyn Edge appealed the rezoning to the MEC who approved it in November 2011, but the required publication had not occurred. Brooklyn Edge instituted action for specific performance. The High Court granted specific performance and ordered the City to submit the closure certificate, assist with publication of the amendment scheme, and transfer the properties upon payment of the balance plus interest.

• Whether the deed of sale contained a tacit suspensive or resolutive condition that closure and rezoning had to be completed within a reasonable time
• Whether the purchase price was void for vagueness due to provisions for set-off of relocation costs
• Whether the City complied with section 79(18) of the Local Government Ordinance 17 of 1939
• Whether section 14(2) of the Local Government: Municipal Finance Management Act 56 of 2003 applied retrospectively to invalidate the transaction
• Whether Brooklyn Edge's claim for transfer was premature
• Whether Brooklyn Edge's claims had prescribed
• Whether the in duplum rule applied to limit interest payable

The appeal succeeded only in respect of the interest calculation. Paragraph 6.2 of the High Court order was deleted and substituted to provide that Brooklyn Edge shall pay R8 550 000 plus interest at the bond interest levied by the City's approved banker, calculated from 1 February 2005 to date of payment (rather than the High Court's order for R17 100 000 being the balance plus interest capped by the in duplum rule). The City was directed to pay 80% of Brooklyn Edge's costs of appeal. The rest of the High Court's order requiring the City to submit the closure certificate, assist with publication of the amendment scheme, and transfer the properties remained in force.

The binding legal principles established are: (1) A tacit term will only be inferred in a contract if it is necessary for business efficacy and both parties would inevitably have agreed to it if asked (bystander test); (2) Legislation does not operate retrospectively to invalidate existing contracts and vested rights unless clearly indicated by the legislature; (3) The in duplum rule applies only to arrear interest (interest that should have been paid but was not) and does not apply to interest that accrues as part of an agreed formula for adjusting a deferred purchase price to account for the passage of time; (4) A "debt" for purposes of the Prescription Act is limited to obligations to make payment, deliver goods or render services - obligations to perform administrative acts like closure and rezoning are not debts that can prescribe; (5) A party cannot rely on its own failure to perform contractual or statutory obligations as a defense to specific performance.

The Court made several non-binding observations: (1) The integration rule may exclude evidence of pre-contractual negotiations where a contract contains an entire agreement clause, particularly where such evidence does not form part of the admissible contextual setting; (2) Even if the evidence of pre-contractual negotiations was admissible in this case, it demonstrated that no suspensive condition was agreed upon; (3) The Court noted it was "prepared to accept, without deciding" that the deemed cancellation clause could be described as a resolutive condition, but did not need to definitively determine its precise legal nature; (4) The Court observed that delays in closure and rezoning processes are "notorious" facts, which supported the interpretation that parties did not intend a time limit; (5) The Court noted it was unnecessary to consider whether relocation costs were objectively determinable since the issue was premature; (6) The Court indicated it was unnecessary to consider whether the City could rely on its own alleged non-compliance with section 79(18) without seeking review of the council resolution, as the alleged non-compliance was not proven.

This case is significant in South African municipal law and contract law for several reasons: (1) It clarifies the test for tacit terms in contracts, emphasizing that they will not be readily inferred and must be necessary for business efficacy and satisfy the bystander test; (2) It confirms the presumption against retrospective operation of statutes, particularly where new legislation would interfere with vested rights under validly concluded contracts; (3) It demonstrates that municipalities cannot rely on their own non-compliance with statutory obligations to avoid performance of valid contracts; (4) It limits the application of the common law in duplum rule to arrear interest only, not to interest that accrues as part of an agreed formula for adjusting deferred purchase price; (5) It reinforces that municipalities must act in good faith in performing their contractual obligations and cannot obstruct processes (like closure and rezoning) required to give effect to valid sale agreements. The judgment protects the sanctity of contracts entered into by municipalities and prevents them from using technical arguments or their own obstructive conduct to avoid valid obligations.