Slovenia runs its enforcement sales through a single state portal and everything else through a layer of private ones, and the difference between those two worlds is the first thing to learn. Court-ordered sales in execution proceedings are published and conducted centrally; bankruptcy sales are not yet unified the same way, and administrators use commercial providers instead. So a search that covers only the official system misses a large part of what is actually for sale.
That is why the portals matter here more than in bigger markets. The ones listed below index across both worlds, and across the Croatian border as well — the two markets are small enough, and close enough, that buyers routinely look at both. Between them they cover property, vehicles, machinery, artworks and the distinctively Slovenian category of rights: trademarks, business shares and receivables sold out of insolvency.
The mechanic to understand is the second round. A Slovenian auction that fails comes back with a reduced reserve, and at least one portal maintains a dedicated section for those repeat sales. Knowing which round a lot is in tells you more about what it will fetch than any other single fact. As everywhere in this region, the notice published by the court or the administrator is the binding document — not the portal's summary — and the land register, not the listing, is what tells you what you are buying.