Selling property in Ossingen: 2015 like the district, 2025 no median

A first reference point is the land. The cantonal model puts residential building land in Ossingen at CHF 696 per square metre for 2025.⁷ In 2015 it was still CHF 475, a rise of 46.5 per cent in ten years. Typically the model ranges from CHF 489 to CHF 996 per square metre.

A second measure exists only for the canton as a whole. Residential building land actually sold in 2021 to 2025 fetched a median of CHF 1,742.⁷ One is a model, the other a median of prices paid. Both only serve as rough orientation; Ossingen's model value sits well below it.

The model only estimates undeveloped land, not your own plot and not the building on it. For a house in Ossingen, the building comes on top, with its age, condition and fit-out. Nor does the 2015 flat median replace that derivation: it is ten years old and applied to flats only.

In 2015, Ossingen genuinely had its own figure: 27 condominiums changed hands, at a median of CHF 644,000.² That was well above the threshold of 15 sales, from which the canton works out a median at all.

By 2025 little of that remains. Only 8 flats changed hands, and 9 houses.² Both figures sit below 15, so the 2025 statistics show no median at all, not for houses and not for flats. What happened between the two years, two reference points alone do not show.

The district of Andelfingen, to which Ossingen belongs, still has enough sales for an official figure. In 2025 the flat median there was CHF 900,000, from 129 sales, 40 per cent above 2015.² In 2015, the Ossingen flat median of CHF 644,000 sat almost exactly on the district median of the time, CHF 641,000. Whether that still holds in 2025, the statistics do not show. Your own house or flat therefore needs a derivation via location, plot and building.

The tariff is the same throughout the canton; Ossingen only levies it.¹ It rises in steps with the gain: 10 per cent on the first CHF 4,000, 40 per cent on the part above CHF 100,000. Ownership then brings a reduction, 20 per cent in the example after 10 full years.

From 20 full years the reduction is highest, 50 per cent. In the example, CHF 46,500 would then be due instead of CHF 74,400.¹ Documented value-enhancing investments reduce the gain further; mere maintenance does not.

Buy a new home to live in afterwards, and the tax can be deferred. You must have lived in the old home yourself and replace it in Switzerland.⁹ If the new home costs less than the proceeds, the difference is taxable at once. If it costs no more than the old purchase price and investments, nothing is deferred.⁹ And deferred does not mean waived.