Off-market apartments in Vienna are apartments sold without public listings on ImmoScout24, willhaben or other portals. Only buyers whom the agent already knows and whom the owner trusts hear about them. Many people think the portals show the whole market, but some apartments change hands quietly: through recommendations, closed buyer databases and personal contacts. Sellers have different reasons – a wish for privacy, an inheritance, a divorce, a tenanted apartment or simply not wanting dozens of viewings. We focus mainly on apartments for sale, because quiet deals are most common when buying. For buyers, such deals mean less competition but also more responsibility, since the price cannot quickly be compared on a portal. In this article we explain why owners choose a discreet sale, how off-market apartments reach us, how such a deal works legally and what you should check before signing a Kaufanbot. At the end you will find a calculation showing what it costs when nobody has checked the price of an off-market apartment. All information is current as of November 2026.
What off-market means and why these deals are not visible on portals
Off-market is not a separate market but a different route to the same notary and the same Grundbuch. Virtually every purchase is registered in the land register, whether or not the apartment was listed on a portal. According to RE/MAX ImmoSpiegel, which is based on all purchases recorded in the Grundbuch and reported by Leadersnet, 11,915 freehold apartments (Eigentumswohnungen) were sold in Vienna in 2025 for a total of €4.19 billion, at an average price of €316,157 per apartment. There are no official statistics on how many of them were never advertised, but in our work quiet sales come up regularly for certain types of apartments.
We explained how the Grundbuch works and what the extract shows in our article on the Grundbuch in Austria. For buyers of an off-market apartment this is especially important: it is the land register extract that shows who owns the apartment and which encumbrances are registered on it.
Why owners sell without a listing
The most common reason is privacy. Owners of high-end apartments in the city centre, in Döbling or Hietzing do not want photos of their home and the price on the internet, or neighbours and acquaintances to know about the sale. The second group is inheritance. Heirs often want to sell an apartment quickly and without attention, but the probate proceedings must be completed first: for the heirs to be entered in the Grundbuch, a court order transferring the estate (Einantwortungsbeschluss) with confirmation that it is final is required. The situation is similar after a divorce, when a couple needs to sell their shared apartment calmly and without publicity.
The third reason is tenanted apartments. An investor selling a let Vorsorgewohnung often does not want to disturb the tenant with dozens of viewings, and a buyer for such an apartment is easier to find among investors the agent already knows. The fourth is developers who offer some apartments in a new project to regular clients before public sales begin. In that case the buyer’s money is protected by the Property Developer Contract Act (BTVG), which we covered in our article on escrow accounts and the BTVG. Finally, at the end of 2026 another motive has appeared: for sales after 31 December, the effective real estate capital gains tax (ImmoESt) for apartments acquired before April 2002 rises from 4.2% to 6% of the price, unless an exemption applies (for example, for a main residence), so some of these owners want to sell quickly rather than wait months for enquiries from a portal.
For the seller, a quiet sale also has a downside: the fewer buyers see the apartment, the less competition there is for it. We therefore advise owners to start with a database of vetted buyers but to be ready for a public listing if the offers do not match the market valuation. You can read how we prepare an apartment for sale in our article on how to sell an apartment in Vienna.
How off-market apartments reach us
As a rule, an owner comes to us on the recommendation of a former client or after ordering a market price assessment (Marktpreiseinschätzung) from us and deciding to sell. We sign a brokerage agreement with them, often with an exclusive mandate (Alleinvermittlungsauftrag). If the owner is a consumer, additional terms of such an agreement must be made in writing under the Brokers Act (MaklerG). We then match the apartment against the search profiles of buyers who have already contacted us: district, size, budget, financing status. We offer the apartment primarily to those it really suits.
Discretion does not suspend the rules. Before a buyer who is a consumer signs an agreement with the agent, the agent must give them a written overview of all expected costs, including the commission (§ 30b KSchG). In addition, under anti-money-laundering rules the agent must identify both seller and buyer and check that the source of funds is plausible. To gain access to off-market offers, it is therefore worth preparing an identity document, proof of own funds and a preliminary loan approval from the bank in advance.
| Seller’s motive | Typical apartment | What buyers should check |
|---|---|---|
| Privacy | High-end apartments in sought-after districts | Market valuation and comparable sales |
| Inheritance | Apartments in old buildings, often unrenovated | Einantwortungsbeschluss and condition of the building |
| Divorce | Family apartments with 3–4 rooms | Consent of both owners and mortgages in the Grundbuch |
| Tenanted apartment | Vorsorgewohnung, Altbau apartments | Lease, rent and term |
| Sale before marketing starts | New-build apartments | BTVG contract and payment schedule |
Case study: what an unchecked price costs
The main risk in an off-market deal is the price. Without dozens of similar listings alongside, it is hard to tell whether the seller has valued the apartment fairly. The immowelt portal also points to this risk: without a market comparison, buyers can easily overpay. Average transaction prices can serve as a guide: according to Otto Immobilien data reported by Leadersnet, an apartment in an existing building in Vienna cost an average of €4,536/m² in the first quarter of 2026, and a new-build apartment just under €7,300/m². For a specific apartment, however, you need a valuation based on comparable sales in the same district, as we explained in our article on valuing an apartment in Vienna.
Taras was looking for an 85 m² three-room apartment in Döbling. The owner, who had inherited the apartment, offered it to him without a listing for €520,000, or about €6,118/m². Our market valuation based on comparable sales in the district came to about €5,700/m², and after negotiations both sides agreed on €495,000 (≈ €5,824/m²). The loan is 80% of the price over 30 years at 3.6%. We calculate the additional costs using the same method as in our article on the 7 mistakes that cost apartment buyers thousands of euros: 9.7% of the price, which includes the agent’s commission (up to 3% plus 20% VAT, i.e. up to 3.6% of the price, according to Infina), plus 1.2% of the loan amount.
| Item | Unchecked price | After valuation and negotiation |
|---|---|---|
| Apartment price | €520,000 | €495,000 |
| Additional costs (9.7% of the price) | €50,440 | €48,015 |
| Loan (80%) | €416,000 | €396,000 |
| Mortgage registration fee (1.2% of the loan) | €4,992 | €4,752 |
| Equity required | €159,432 | €151,767 |
| Monthly payment | €1,891 | €1,800 |
| Interest over 30 years | €264,877 | €252,142 |
| Total: price, costs and interest | €840,309 | €799,909 |
With additional costs and interest over the full loan term, the €25,000 difference in price grows to €40,400. Taras needs €7,665 less equity at the start, and his monthly payment is €91 lower. The names are fictitious and the calculation is illustrative, but the pattern is typical: an off-market apartment is not automatically a good deal. We explain how to avoid mistakes with the first price offer in our article “Vienna Property Market: 10 Insights from Our Experience”.
Conclusion: how to buy an off-market apartment in Vienna with less risk
Off-market apartments in Vienna give buyers access to offers that may never appear on ImmoScout24, and less competition for them. At the same time, the same rules apply as for any other purchase: checking the Grundbuch, the minutes of owners’ meetings, the lease and the market price before signing the Kaufanbot. The best route to such apartments is therefore to get into an agent’s database early, with a clear search profile and financing in place.
At VigoImmobilien we work with off-market apartments for sale in Vienna: we receive them from owners who entrust us with a discreet sale and offer them only to buyers with a matching profile. We prepare a market price assessment (Marktpreiseinschätzung), check the building’s documents and the Grundbuch, negotiate with the seller and support you through to signing the contract at the notary, while coordinating legal questions with a lawyer or notary. Find out more in our article on the services of a real estate agent in Austria.
This article contains general information as of November 2026 and is not legal, tax or financial advice. The case study is generalised, the names are fictitious and the calculations are illustrative; for your specific situation, please consult a lawyer, notary or tax adviser.
