The Dutch Property Data API
Two APIs. Complete coverage.
Property Aggregator API
Real-time Dutch property listings
Every rental and sale listing from 1,200+ sources, deduplicated and normalized with ~1 minute freshness.
- Search by location, price, size, type
- Webhook notifications for new listings
- Source transparency with original URLs
- 99% deduplication accuracy
const listings = await voseno.listings.search({
city: "Amsterdam",
type: "rental",
min_rooms: 2
});
// 127 listings from 34 sourcesProperty Data API
The Golden Address Record
Complete property context for any Dutch address: building attributes, valuations, neighbourhood stats, and environmental risk.
- BAG-anchored identity
- WOZ valuations with history
- CBS demographics and income data
- Livability and environmental risk scores
const property = await voseno.properties.lookup({
postcode: "1015DT",
house_number: "123"
});
// Complete property contextEverything you need to build with Dutch property data
Technical Specifications
& Capabilities
1,200+ Sources
Every major portal plus long-tail broker sites
~1 Min Freshness
Near real-time listing detection and updates
99% Accuracy
Advanced deduplication across sources
BAG-Anchored
Official building IDs for reliable data joins
Complete Context
WOZ, CBS, energy, livability, and risk data
Webhooks
Real-time events for listings and price changes
Source Links
Original URLs for every listing source
Developer-First
Modern REST API, great docs, SDKs
Self-Serve
Instant API keys, no sales calls required
More capabilities launching soon
Historical Listings Archive
12 months of listing history for trend analysis and comps
Automated Valuation Model
ML-powered property valuations trained on Dutch transaction data
Rent Ceiling Calculator
WWS points estimation from property attributes
Broker Performance API
Agent stats: days on market, price achievement, volume
Portfolio Monitoring
Track your properties with automated alerts and reports
Belgium Expansion
Same unified API, expanded to the Belgian property market
Trusted by industry leaders
Huisly
Aggregator B2C
Voseno's real-time feed allowed us to scale our alerts system to cover the entire Dutch market with zero latency.
Huisly.nlZepilo
Broker CRM
The property data API gives our broker clients NVM-level insights without the red tape. It's a game changer.
Zepilo.comPricing
Free
For evaluation and prototyping
- 1,000 API calls/month
- Amsterdam only
- Core fields
- Community support
Growth
For growing PropTech products
- 100,000 API calls/month
- All cities + webhooks
- All fields + livability
- Priority support (24h)
- Bulk lookup endpoint
Enterprise
For large institutions
- Unlimited calls
- Custom SLAs (99.95%+)
- Dedicated support
- On-premise option
- Bespoke source integration
All plans include: Instant API keys • Full documentation • No credit card for free tier
Enterprise-ready from day one
Data Residency
Data processed and stored in EU (Netherlands)
Privacy First
No personal data in API responses (PII scrubbed)
Transparency
Field-level provenance for licensing transparency
Security
Regular security audits and penetration testing
Compliance
GDPR Compliant
Certification
SOC 2 Type II (2026)
Ready to build with Dutch property data?
Get your API key in minutes. No credit card required.