Selling a house in Switzerland without an agent: the full process

No. The law does not require an estate agent for the sale of a house. For the purchase contract, it prescribes only one form: public notarisation by a notary, in the Canton of Zurich at the notary office.¹ Without this deed, the contract is invalid, and so is a preliminary contract.¹

You may therefore negotiate and complete a sale directly with a buyer at any time. The notary office walks you through the contract and drafts it.¹³ Price, listing and negotiation stay your task.

An estate agent voluntarily takes on tasks you would otherwise do yourself: judging the price, placing the listing, running viewings, negotiating. Anyone weighing up an agent will find the twelve questions to ask under choosing an estate agent.

What this means for you: the decision is not a legal one, but a practical one. It comes down to your time, your market knowledge and who reliably avoids the costly mistakes further below.

The price is the lever with the biggest effect. Set it too high, and viewings often stay away, so the house can be seen as «difficult» within a few weeks. Set it too low, and you give away money, often without ever noticing.

Your view of your own house is rarely neutral. A renovation that cost a lot, or a memory attached to the house, shifts your own view of the price. The market does not know that story and does not pay more for it automatically.

An independent assessment separates these two things: your own attachment to the house and the price a stranger actually pays. The ways to get a valuation, and their limits, are shown on house valuation.

What this means for you: get a second, independent opinion on the price before the listing goes online. A free review also shows what remains after mortgage and tax.

At a viewing, honesty counts more than sales talent. Disclose defects you are aware of as well, such as an ageing heater or a damp wall. Defects you fraudulently concealed remain your liability even if you exclude the warranty.¹

Once a buyer comes forward, a reservation often follows. It binds no one legally, not even the buyer. In 2014 the Federal Supreme Court struck down a fixed payment for withdrawing from a reservation that was not notarised. The seller had claimed 192,000 francs.^{4 5}

So ask about financing before you agree to anything. Payment usually follows only at the transfer of ownership. The buyer's bank gives an irrevocable payment promise for it.⁶ A written financing confirmation beforehand shows you sooner whether the bank is on board.

What this means for you: negotiate the price first, the dates second. Both sides are only ever bound by the notarised deed, not by an agreement to buy.

A contract for the sale of land is only valid if a notary notarises it publicly.¹ In the Canton of Zurich, the notary office also acts as the land registry.¹³ Once you sign, you and the buyer are bound by the contract, but you remain the owner for now.³

The notary office needs fixed details for this. These cover marital status, any mortgage, the date of transfer and how the warranty is handled.¹⁴ Settle these points before the appointment, not only during the meeting.

Ownership and usually most of the price only change hands once the land register application is filed. That is not already when you sign. You, as the seller, must file that application.^{2 3} The whole path to the money is shown on the selling process. Everything on the notary and land registry is on notary and land registry.

What this means for you: the notary appointment is not paperwork at the end. It is the one form the law prescribes, and the moment that really binds you.

As seller, you are liable for assured qualities and for significant defects, even ones you did not know about.¹ This liability is called the warranty (Gewährleistung). It can be excluded in the contract, and according to the Zurich notary offices this is very widespread.⁷

Two limits always remain. No exclusion covers a defect you fraudulently concealed.¹ If the house was newly built less than two years before the sale, the buyer can demand free rectification. Since 2026, that right cannot be waived in advance.^{1 8}

Without an exclusion, since 2026 the same rule applies to every purchase of land: 60 days to report a defect, from discovery for hidden ones, and a five-year limitation period. Neither can be shortened to the buyer's disadvantage.^{1 8}

What this means for you: a contract pulled from the internet often handles the warranty unclearly. Have the notary office draft this one section carefully, and disclose what you know about the house.

What is taxed is not the sale price, but the gain. The gain is proceeds minus acquisition costs: the earlier purchase price and documented value-adding investments.¹⁰ Without proof for a renovation, it usually does not count for tax, even if it cost real money.

Within 30 days of the change of ownership in the land register, you file the tax return with the municipality. The tax falls due on day 90, with interest from day 91.^{10 11}

The house is additionally liable for the tax through a statutory lien held by the municipality.¹⁵ That is why the buyer may demand security for the estimated tax, for example from the price and recorded in the contract.¹¹

What this means for you: have the old purchase contract and every renovation invoice ready before you name a price. Estimate the tax yourself in advance with the calculator for the Canton of Zurich.

A mortgage is normally repaid on sale; in the contract this is called redemption. Banks usually sign entirely new contracts with the buyer and so create a new debt.¹²

A transfer of the debt within the notarised contract is nonetheless possible. You are then released from the debt. The exception: your bank declares in writing within a year that it wants to keep you liable.^{2 12} Settle this early, directly with your bank, not only at the notary appointment.

With a fixed-rate mortgage, the interest rate is fixed for several years. If you redeem it early, the bank can demand compensation for that. This compensation is called an early repayment charge and can be noticeable depending on the remaining term.

What this means for you: talk to your bank early, before you set the price publicly. The likely order of magnitude is shown by the early repayment charge calculator.