The City of Tshwane Metropolitan Municipality v Blair Atholl Homeowners Association

The City of Tshwane and a property developer concluded an Engineering Services Agreement (ESA) in February 2006 to facilitate the development of the Blair Atholl residential estate, which lay outside the City’s service priority areas. Under the ESA, the developer (and later the Blair Atholl Homeowners Association, a section 21 non-profit company) would fund and construct bulk and internal water and sewerage infrastructure and assume responsibility for maintaining internal services. In return, the City undertook to supply water to the Association at the ‘normal rate of the Municipality’ and not to levy sewerage charges. After occupation of the estate, a dispute arose regarding which municipal water tariff applied. The City billed the Association under Scale D (non-residential consumers), later intending to move to Scale B (residential), while the Association contended that the phrase ‘normal rate’ referred to the bulk water tariff applicable to other municipalities (tariff 6). Litigation ensued, and the High Court separated issues under Uniform Rule 33(4) and interpreted clause 6.16.1 in favour of the Association, relying heavily on extrinsic evidence. The City appealed to the Supreme Court of Appeal.

The appeal was upheld with costs, including the costs of two counsel. The order of the High Court was set aside and substituted with a declaration that clause 6.16.1’s reference to the ‘normal rate of a municipality’ is not a reference to tariff 6 of the City’s Schedule of Tariffs. The remaining issues were remitted to the High Court for further hearing, and costs in the court below were reserved.

The case is significant for reaffirming core principles of contractual interpretation in South African law, particularly the continued application of the parol evidence rule and the limits on the admissibility of extrinsic evidence. It also serves as a strong warning against the inappropriate use of separation of issues under Uniform Rule 33(4) and underscores that such separation should only be ordered where it clearly promotes efficiency and finality. The judgment has broader importance for disputes involving municipal service agreements and tariff interpretation.