Facts
On March 27, 2013, B.B. and C.B. submitted a building permit application for a single-family house on a plot in the core zone of Muttenz. The neighbor A. filed an objection to the construction project, as she believed it violated the cantonal and municipal heritage protection regulations. However, the Building Inspectorate, the Building Appeal Commission, and the Cantonal Court of Basel-Landschaft dismissed the objection and granted the building permit.
A. then filed a complaint with the Federal Supreme Court. She argued that the construction project contradicted the objectives of the Federal Inventory of Swiss Heritage Sites of National Significance (ISOS) and the corresponding cantonal structure plan.
Considerations
The Federal Supreme Court dismissed the complaint. It stated that while the ISOS serves as a planning basis, it is not directly applicable. Rather, the protection goals of the ISOS must be implemented in the municipal land use planning. The municipality of Muttenz has done this with the Zoning Regulations for…