Section 45 of the KwaZulu-Natal Planning and Development Act 6 of 2008, which provides for an appeal from municipal planning decisions to a provincial Appeal Tribunal, is constitutionally invalid because it constitutes impermissible provincial interference in municipal planning, which is an exclusive municipal competence under section 156(1) of the Constitution read with Part B of Schedule 4. Provincial legislation cannot give a province the power to exercise executive municipal powers or administer municipal affairs through an appeal mechanism, even if administered by an "independent" tribunal. The Constitution allocates different planning responsibilities to each sphere of government, and municipal planning decisions - including zoning and land use decisions of any magnitude - lie within the exclusive competence of municipalities. Provincial and national spheres may not assume powers not conferred on them by the Constitution and must respect the constitutional status, institutions, powers and functions of other spheres of government.