Executive Council of the Province of the Western Cape v Minister for Provincial Affairs and Constitutional Development of the Republic of South Africa; Executive Council of KwaZulu-Natal v President of the Republic of South Africa

The governments of the Western Cape and KwaZulu-Natal challenged the constitutionality of numerous provisions of the Local Government: Municipal Structures Act 117 of 1998. The Act formed part of the final phase of transforming South African local government and regulated the establishment of municipalities, their categories, types, internal structures, and committees. The provinces contended that several provisions impermissibly encroached on provincial powers to establish municipalities under section 155 of the Constitution and on municipal powers to determine internal structures under section 160. The national government argued that Parliament enjoyed concurrent legislative competence under section 44 of the Constitution. Given the impending local government elections and the nationwide impact, the matters were brought directly to the Constitutional Court and heard together.

The applications succeeded in part. Certain provisions of the Municipal Structures Act were declared unconstitutional and invalid to the extent that they encroached on constitutionally assigned provincial and municipal powers. The remainder of the challenged provisions were upheld. No order as to costs was made.

This decision is a foundational authority on the constitutional distribution of powers in South African local government. It clarifies that Parliament does not enjoy unfettered concurrent competence over matters regulated in Chapter 7 and affirms the autonomy and constitutional protection of provincial and municipal powers. The judgment remains central to intergovernmental relations and the interpretation of legislative competence under the Constitution.