Selling property in Dielsdorf: building the value block by block

With three building blocks that can each be checked. The first is the land. The cantonal model puts residential building land in Dielsdorf at CHF 1,809 per square metre for 2025.⁹ Typical model values range from CHF 1,276 to CHF 2,580. For your plot, location, shape and zone count; the model only sets the frame.

The second block is the building: year of construction, living space, condition and what has been renewed in recent years. Your invoices and plans help here. The third block is the comparison with similar houses sold in Dielsdorf or in neighbouring villages.

What this means for you: a valuation of a house in Dielsdorf should disclose all three blocks. If one is missing, part of the justification is missing. A figure without justification is hard to defend in a negotiation. With one, you can answer questions from a buyer on the facts.

For flats there is an official figure, but only just. In 2025, 21 flats were sold on the open market, at a median of CHF 1,030,000.² So half of the flats cost more and half cost less. The figure is 14 per cent below the cantonal median. In 2015 there were only 13 sales and therefore no median.

In 2007 the flat median was CHF 455,000, from 18 sales. By 2025 it had more than doubled. For the tax, it is exactly this gap that counts: in the median example it takes 11.9 per cent of the sale price.¹

What this means for you: a median from 21 sales is a pointer, not a price tag. For your flat, floor, size, condition and year of construction count. It cannot be transferred to a house. And for your tax, what counts is not the 2007 median but your own purchase price back then. You will find it in your purchase contract.

In the median example CHF 122,864, which is 21.4 per cent of the gain.¹ The canton sets the tariff, and it is the same in every municipality. Dielsdorf only levies the tax.

The tax rate of 105 per cent, 200 per cent including the canton, only affects income and wealth.³ On the same income, Regensdorf means about 6 per cent more cantonal and municipal tax, Wallisellen about 6 per cent less. It plays no part in property gains tax.

Two things reduce property gains tax. Documented investments that add value, such as an extension. And a longer period of ownership: after 20 full years the example would come to CHF 109,700.¹ If you lived in it yourself and buy another owner-occupied home in Switzerland, the tax can be deferred. That does not reduce it. What this means for you: find your purchase contract and invoices before you name a price.