Supreme Court rules property tax on redevelopment land void

The Supreme Court ruled that property tax assessments on land within urban redevelopment zones are null and void if the land is designated for public use or remains under construction.

In a decision released March 12 in case 2025Du35308, the court affirmed a lower court ruling favoring a housing reconstruction association challenging levies imposed by a local government. The dispute centered on whether land set aside for parks and roads, which reverts to the municipality without compensation, qualifies for tax exemptions.

The court clarified that land where topographic maps have been announced under the Urban and Residential Environment Improvement Act falls under the same non-taxable category as land designated under the Framework Act on National Land Planning and Utilization. This interpretation aligns with the legislative intent of the Local Tax Act, which aims to exempt public facility lands from the urban portion of property taxes regardless of the specific planning statute used for designation.

The ruling also addressed land where construction is ongoing but incomplete at the time of assessment. The court held that such properties qualify as unexecuted land eligible for a 50 percent reduction in property taxes under the Local Tax Special Restrictions Act. The justices noted that the 2016 amendment to the act specifically added the requirement for land to be unexecuted as of the tax base date to distinguish it from completed projects, meaning active construction sites still fall within the relief scope.

The judgment emphasized that when legal principles regarding tax exemptions are clear and leave no room for interpretive dispute, a tax office's failure to apply them correctly renders the resulting assessment invalid due to a major and obvious flaw. The court stated that interpreting clear statutory language incorrectly without reasonable grounds does not create a legitimate dispute over legal theory.