Portal Export Explained: Listings to ImmoScout24, Immowelt and OpenImmo Portals

When you market a flat, you want it visible on as many portals as possible – without maintaining each listing separately. That's exactly what OpenImmo is for: an open standard that unifies data exchange between management software and property portals. And where a portal prescribes its own route – as ImmobilienScout24 does with its API – that route is used.

What is OpenImmo?

OpenImmo is an XML-based exchange format that has become the industry standard in German-speaking markets. It describes a property in a structured way: type, location, areas, prices, fit-out, texts and images. Because Immowelt and many other portals and marketing service providers understand OpenImmo, listings can be handed over automatically from one piece of software – instead of typing them into each portal by hand.

Why manual entry is expensive

Creating the same flat on ImmobilienScout24, Immowelt and a third portal by hand means doing the work three times – and risking errors three times.

Aspect	Manual per portal	Export from one source
Effort	repeated per portal	once, centrally
Consistency	error-prone	uniform
Updates	repeat everywhere	one path
Deactivation	easy to forget	automatic

Typical consequences of the manual route: one portal shows the old rent, another the new one; a let flat accidentally stays online; and every change must be repeated everywhere. Exporting from a single data source removes this.

Three channels – always with your own credentials

Immo Manager does not act as a middleman towards the portals. You export with your own portal credentials, your contract with the portal is untouched, and listings appear under your provider account.

ImmobilienScout24 – Import/Export API. ImmobilienScout24 accepts listings through its REST interface. To use it, register your own API access at selfservice.immobilienscout24.de with the permission "Kundenwebsite / Immobilienverwaltungssoftware" (customer website / property management software), then authorise Immo Manager in the app. From then on, listings, updates and deactivations are transferred directly via the API.

Immowelt – OpenImmo over FTP. Immowelt imports OpenImmo packages over FTP. Request FTP access from Immowelt support, store the credentials once in Immo Manager, and the export runs automatically over that connection.

Other portals and services – OpenImmo over SFTP or FTP. Any portal that accepts OpenImmo can be connected with the SFTP or FTP details it provides. That also covers regional portals and marketing service providers, without waiting for a dedicated integration.

How export works in practice

The flow is simple:

1. You store your own credentials once per portal – API access for ImmobilienScout24, FTP access for Immowelt, SFTP/FTP details for other portals.
2. You maintain the property data and images once, centrally, in your software.
3. The software transfers the listing over the matching channel: via API to ImmobilienScout24, as an OpenImmo package over FTP to Immowelt, or over SFTP/FTP to other portals.
4. Updates and deactivations run through the same path.

The result: a consistent presence across every connected channel, with minimal effort.

Data quality is the key

An export is only as good as the underlying data. Complete details on area, energy and fit-out, good images and a clean description decide how a listing performs on the portal. Keeping master data maintained per unit lets you market a vacant flat in minutes instead of hours – a direct lever against vacancy.

From listing to tenancy

The real advantage appears when export doesn't end at the portal but is part of a continuous process: enquiries from the portals flow back into the same platform, become prospects – and the chosen applicant becomes a tenant without duplicate data entry.

In Immo Manager, portal export to ImmobilienScout24, Immowelt and OpenImmo portals is part of exactly this chain. For an overview of all capabilities, see our features page.