Custom Kolibri CRM integration development
Appfront builds custom integrations between Kolibri24 and your own estate agency website, property search portal or application. Via the Kolibri24 API we synchronise property listings with photos and features, write leads and contacts back to Kolibri, and connect matching profiles. This way you always show up-to-date listings, enquiries land directly in your CRM, and your team keeps control of a single source of truth.
What is a Kolibri CRM integration?
Kolibri24 is estate agency software and a property CRM for the Dutch market. Agents manage their property listings, relationships and matching there, and publish listings to Funda and other property portals. Where standard publication stops at the well-known portals, a custom integration begins: making Kolibri data available to your own website, portal or application and writing data back.
In practice, a custom integration means: synchronising property listings with photos, features and status to your own estate agency website; writing leads from your site or enquiry forms back as contacts or enquiries in Kolibri; linking matching profiles so that buyers and renters automatically receive suitable listings; and passing media through properly. Via webhooks or scheduled sync, everything stays current without manual re-entry.
Appfront builds according to the official Kolibri24 developer documentation and the OWASP ASVS security standard. We align the data flows, sync logic and error handling with your actual estate agency processes, so the integration grows with your listings and keeps running reliably even with large volumes of objects.
Up-to-date property listings
Properties with photos, features, price and status flow automatically from Kolibri to your own website or portal. A home marked as sold in Kolibri is shown as sold online straight away, with no manual work.
Leads & contacts back into Kolibri
Enquiries, viewing requests and contact forms on your site arrive as a contact or lead directly in Kolibri. Your agents work in one system, and nothing gets stuck in a loose inbox or spreadsheet.
Linking matching profiles
Search profiles of your contacts are linked to incoming listings, so matching properties are automatically matched and flagged. Buyers and tenants receive relevant homes faster, and estate agents spend less time on manual matching.
Our development process for Kolibri integrations
We work to a proven methodology that removes uncertainty early and delivers a stable integration. From an initial analysis of your property listings, contacts and website through to going live and ongoing maintenance, every step is designed to give you an integration your team can understand and trust.
We map out which property listings and contact and media data you want to expose, whether leads need to be written back, which matching profiles are involved, and which website or portal the integration should connect to.
We design the integration architecture, choose the right authentication and draw up an error-handling strategy.
Implementation with automated tests, structured logging and monitoring. You see working builds along the way.
Controlled go-live with data validation and a safety net, followed by ongoing management and further development.
What a Kolibri integration delivers in practice
Every Kolibri integration is tailored to your property listings, contact management and adjacent systems. Below are the features we most often deliver for estate agencies and firms that use Kolibri as the core of their workflow.
Property listings to your own website
Properties from Kolibri appear automatically on your own estate agent site or property search portal, with price, features and status. A change in Kolibri, such as a new home, a price reduction or a sale, goes live on your site without any manual work.
Contact & lead sync
Contact forms, viewing requests and enquiries on your website are written back to Kolibri as contacts or leads. Duplicate entries disappear and your estate agents work from a single central contact record.
Match profiles & saved searches
Contacts' search profiles are linked to incoming listings, so matching properties are automatically matched and flagged. Prospects receive relevant listings faster, and estate agents save time.
Media & photos
Photos, floor plans and brochures from Kolibri are synchronised to your website too, in the correct order and formats. Imagery stays consistent with what the agent manages in Kolibri, without manual uploads.
Marketing automation
New or updated listings automatically trigger email campaigns, newsletters or social posts via your marketing tools. Prospects with a matching profile receive timely notifications about relevant properties.
BI dashboards & reporting
Listing, time-on-market and contact data from Kolibri flows into a dashboard, for example via a Power BI integration. Management sees portfolio, conversion and time-on-market in one overview.
Typical use cases in practice
A Kolibri integration looks different for every organisation. We see a number of recurring patterns, and for each we have a proven setup that takes into account property listings, contact sync and the right logic for matching profiles and media.
Estate agencies with their own website
Estate agents who want to show Kolibri property listings on their own website rather than only on portals. Listings, photos and status flow through automatically, and enquiries on the site land back in Kolibri as leads. See also our API integrations and the Realworks integration.
Property management
Letting agents and property managers who want to make listings and contacts from Kolibri available through a rental portal or client portal. Available properties, features and media are shown to prospective tenants, while responses and tenant details remain centralised in Kolibri.
Proptech builders
Proptech teams who want to build on Kolibri data: a property search app, a valuation tool or a mortgage flow that needs current listings and match profiles. We expose the right endpoints and safeguard data quality.
Web agencies for estate agents
Agencies that build estate agent websites and need a reusable, reliable Kolibri integration rather than reinventing the wheel for each project. We build a clean integration layer that you can deploy across multiple client sites.
Technology we use
We build Kolibri integrations with the official Kolibri24 API and webhook or polling sync, combined with the backend stack that suits you. The precise choice depends on your website, portal and existing systems, so that your own team can manage or further develop the integration.
Why choose Appfront for your Kolibri integration?
Appfront has extensive experience building API integrations for a wide range of organisations in the Netherlands. We always begin with a thorough analysis of your existing systems and processes. An integration must not only work technically, but also add practical value to your estate agency workflow.
For every integration, we write clear documentation and make sure your own team, or any future supplier, can understand and manage it. No black box, just transparent code and clear agreements on monitoring, alerting and maintenance.
You work with a dedicated point of contact who understands both the technical and the functional side. This keeps communication short, prevents misunderstandings and speeds up decisions when choices need to be made during development.
See also our wider services around API integrations, middleware, custom software development and web app development.
- Experience with the Kolibri24 API, objects, contacts and media
- Specialist in integrations with estate agency and property CRMs
- Familiar with listing sync, writing back leads and match profiles
- Secure by default — tokens in vaults, scoped permissions per tenant
- Structured error handling and retry mechanisms
- Comprehensive logging and monitoring from day one
- Clear documentation your team can read and manage
- A fixed point of contact, no account managers passed around
- Ongoing maintenance and proactive further development
- A way of working aligned with your existing IT landscape
Security and privacy in Kolibri integrations
A Kolibri integration processes contact and personal data of buyers, sellers and tenants, alongside commercially sensitive listing information. That is why Appfront builds to the OWASP ASVS security standard and the best practices in the Kolibri24 developer documentation. This includes storing tokens in secure vaults, scoping permissions per tenant, validating incoming and outgoing sync, and carrying out regular audits of the data flows between Kolibri and your website.
Authentication runs through the Kolibri Identity Server using OAuth 2.0 and OpenID Connect, with the unique office ID included in every request. We document the data flows, endpoints and processed fields so that your record of processing activities is complete and you can demonstrate compliance with the GDPR. This way you stay in control of which personal data your website receives and writes back.
More on our security approach: information security policy and CVD policy.
- GDPR-compliant data processing and data minimisation
- Encryption in transit (TLS 1.2+) and at rest
- Role-based access and least-privilege principles
- Audit logs with traceable data flows
- Automatic retries and dead-letter queues
- Monitoring and alerting for anomalies
- Secrets management in line with best practice
- Documentation for your record of processing activities
Frequently asked questions about Kolibri integrations
Answers to the questions we are asked most often about Kolibri integrations.
A Kolibri CRM integration is a technical link between Kolibri24, the estate agency software from Kolibri, and another system, such as your own estate agent website, a property search portal, lead forms, marketing automation or a BI dashboard. Property listing, contact and media data is exchanged programmatically via the Kolibri24 API. An integration can be simple (synchronising listings to your own site) or extensive (writing leads back to Kolibri, linking matching profiles and building reports).
Kolibri is strong for the Dutch estate agency market: managing property listings, relationships and matching, with publication to Funda and other property platforms. A direct Kolibri integration is a good fit when you want to show listings on your own website or portal, have leads land directly in Kolibri, or automate a specific workflow. If your listings mainly run through the NVM and Funda standards, we will work out together whether an integration built on those standards, or directly on the Kolibri24 API, is the best fit.
A simple integration, syncing property listings from Kolibri to your own website with photos and features, is usually quicker to deliver than a two-way integration that also writes leads and relationships back or links matching profiles. After an intake meeting, in which we map out the required data flows and endpoints, we will give you a realistic estimate.
We work with the official Kolibri24 API, which has a RESTful architecture and handles authentication through the Kolibri Identity Server using OAuth 2.0 and OpenID Connect. Kolibri is a multi-tenant environment in which each estate agency is its own tenant, so every request includes the unique office ID. We access object, relationship and media endpoints and build the backend in the stack that suits you — Node.js, Python or PHP — using webhook or polling-based sync.
The cost depends on the complexity of the data flows, the number of systems to connect, the required sync frequency and the amount of custom business logic, for example writing leads back or linking matching profiles. Ongoing maintenance, monitoring and support also affect the total investment. We always provide a clear quote following a no-obligation review of your situation.
Yes. A Kolibri integration processes relationship and personal data of buyers, sellers and tenants, as well as commercially sensitive listing information. Authentication runs through the Kolibri Identity Server using OAuth 2.0 and OpenID Connect. Appfront builds to the OWASP ASVS: tokens are held in secure vaults, permissions are scoped per tenant, incoming sync data is validated, and rights are strictly separated. We document the data flows so that your record of processing activities remains complete and you can demonstrate GDPR compliance.
Yes. Appfront regularly takes over existing integrations, including those originally set up by another party. We review the API integration, the sync of property listings and relationships, the webhook or polling configuration and the error handling, document the current setup and propose improvements. From that point on, we handle changes, extensions and monitoring, including timely token rotation.
A Kolibri integration is a good fit for estate agency firms that want to show listings on their own website or portal, property managers who want to open up listings and relationships, proptech builders who want to build on Kolibri data, and web agencies that build estate agency websites and need a reusable Kolibri integration. If you work with a different estate agency CRM, we also build integrations for those platforms.
Ready to get your Kolibri integration built?
Tell us which property listings and contacts you want to make available, and on which website, portal or application Kolibri should connect. We are happy to think along about listing sync, writing leads back, matching profiles and reporting. A no-obligation first conversation will give you a clear picture of the possibilities within half an hour.