Subdividing a plot: can you split off part of your land and sell it?

This depends on your land's condition, not its size. Is a house already standing on it, or is there already a building permit? Then the split itself needs its own permit under building law¹. That also applies if you only want to separate the back part of the garden. An exception applies to a compulsory transfer (Zwangsabtretung) by the public authorities¹.

If your land is not yet built on, and not yet permitted either, you can split it without that separate process¹. The new boundary still needs to go into the land register (Grundbuch).

What surprises many people: the permit requirement depends on the house, not the garden. For most owners with a house already lived in, that means one thing. Clarify the question with the building authority (Bauamt) before you talk to any buyer. What this means for your own land, the land potential check shows.

The new boundary alone is not enough. Both parts – the plot you sell and the part you keep – must still meet every building rule afterwards¹. Can the remaining plot still build as much floor area as its floor-area ratio (Ausnützungsziffer) allows? Does your house still meet the distance rule (Grenzabstand) to the new line? Is access – driveway, water, power – still secured for both parts? Only once all three are yes does the municipality approve the split¹.

One more point applies. These measures only apply in their new form once your municipality updates its own building and zoning code. Municipalities have time by law until 29 February 2028 at the latest¹. Until then, some older terms still apply, for example building height (Gebäudehöhe) instead of facade height (Fassadenhöhe).

What this means for you: the exact figures sit in your municipality's own code, not in one cantonwide table. We check this in the land potential check, before you talk to anyone about a sale.

No. The split itself is neither a sale nor a change of zone. Both of those only trigger a payment later.

The cantonal value-capture levy belongs to a rezoning into building land. It only becomes due on building approval, or on a change of ownership through a sale². If the added value instead comes from other rezonings, your municipality may raise its own levy, if it has decided to. It then becomes due only once the land is built on, not on sale². The duty passes to the buyer instead. More on this is on our value-capture levy page.

Property gains tax (Grundstückgewinnsteuer) – the tax on the profit – also only becomes due on an actual sale of the plot³. The split on paper does not trigger it. What it would come to for your new plot is shown by our property gains tax calculator.

What this means for you: the split costs you nothing in tax. What matters is the later moment when you actually sell or build.

For most owners, a simple split is enough: a new boundary through an existing plot, plus a survey and a land register entry. For a plot already built on, it also needs the building-law permit. Two related procedures go further.

A boundary adjustment (Grenzbereinigung) applies when the existing boundary line prevents sensible building¹. Then a small, unbuildable plot can be swapped with the neighbouring plot, or the municipality can assign it there¹. No whole area gets replanned for this.

An area development plan (Quartierplan) is the bigger tool. It replans several plots in an area together, including access roads and services¹. The municipality opens it at an owner's request, or on its initiative. Once it has been conclusively opened, no actual or legal changes may be made to the plots without the local council's approval¹.

What this means for you: if it is just your own garden, a simple split is enough. An area development plan only comes into play once several neighbouring plots would need to be replanned together.