Building-land label alone cannot block residence exemption

The Conseil d'État (9ème et 10ème chambres réunies, 30 September 2026, n° 511096)LegifranceLegifrance rejected the public-accounts minister's appealLegifrance and left standing the Marseille appeal court's discharge of capital-gains tax, social contributions and penaltiesLegifrance on a 46,155 m² Nice family propertyLegifrance sold with co-owners on 30 January 2017Legifrance. The property comprised two dwelling houses used as the principal residences of the taxpayer and her sistersLegifrance, a private chapel and adjoining land. The tax administration had limited the principal-residence exemption of article 150 U-II of the code général des impôts to a 4,339 m² fractionLegifrance and taxed the balance, sold as building land, for 2017Legifrance; the Nice tribunal upheld that in July 2024, and the Marseille court in November 2025 annulled the judgment and discharged the remaining assessmentsLegifrance.

Two holdings matter. First, on the law: the building-land character given by the administration to most of the property does not by itself exclude qualification as dépendances immédiates et nécessaires of the two houses under article 150 U-II-3° CGI, which exempts the principal residence held on the day of sale (1°) and its immediate and necessary dependencies sold at the same time (3°). The appeal court therefore made no error of law in refusing to treat that classification as dispositive. Second, on the facts: the court's finding that the whole adjoining ground was such a dependency — resting on the uncontested indispensability of the area carrying the houses' individual sanitation systemLegifrance, the private and functionally linked use of the pool, chapel, terrace and tennis courtLegifrance, and the private amenity use of the gardens, lawns and woods — was a sufficiently reasoned sovereign assessment, not open to cassation review absent distortion of the record. The State will pay the taxpayer 1,000 euros under article L. 761-1 of the code de justice administrative.

The practical consequence is narrow but real: where land sold as building land genuinely functions as the immediate and necessary dependency of the principal residence, its planning classification alone does not defeat the exemption — the use test controlsLegifrance. Advisers should note the standing administrative doctrine remains stricter on its face: the BOI (BOI-RFPI-PVI-10-40-10, §340) says that where property is sold as building land, only parking annexes, courtyards, passages and access ways qualifyImpots, because building land cannot in principle be an immediate and necessary dependencyImpots. The decision itself does not discuss that doctrineLegifrance; its holding is that the classification is not conclusive by itselfLegifrance, and it turns on the concrete functional link proved here. Files should therefore be built on evidence of functional attachment — sanitation footprint, private amenity use, functional links — and on simultaneous sale with the residence.

Legal basis: Conseil d'État, 9ème et 10ème chambres réunies, 30/09/2026, n° 511096 (ECLI:FR:CECHR:2026:511096.20260930); code général des impôts, article 150 U-II-1° and 3°. For the administration's published reading, BOI-RFPI-PVI-10-40-10 (§330–340).