Frequently Asked Questions

PropertyOS is a data infrastructure platform for European property markets. We provide ML-powered pricing intelligence, 52 economic datasets, and quality-graded indices across 28 countries (27 EU member states + United Kingdom). Our platform enables developers, marketplaces, and enterprises to build property features without the cold start problem.

We cover all 27 EU member states plus the United Kingdom, totaling 28 countries. This includes major markets like Germany, France, Spain, Italy, and Netherlands, as well as emerging markets in Central and Eastern Europe.

FairRent is our flagship product for rental pricing intelligence. It provides ML-powered rent predictions with A-F accuracy grades, confidence intervals, market tension indicators, and savings guidance. FairRent is built on top of PropertyOS infrastructure.

Sign up for a free account to get your API key. Our API follows RESTful conventions with JSON responses. Check out our developer documentation for quick start guides, code examples, and endpoint references. Most integrations take less than a day to implement.

We offer a 99.9% uptime SLA for all paid plans. Our infrastructure is hosted on Microsoft Azure with automatic failover and redundancy. You can monitor our real-time status at status.propertyos.eu.

Yes, we provide official SDKs for JavaScript/TypeScript, Python, and Go. Community-maintained libraries are available for other languages. All SDKs are open source and available on GitHub.

Rate limits depend on your plan. Free tier: 100 requests/day. Starter: 10,000 requests/month. Growth: 100,000 requests/month. Enterprise: Custom limits with dedicated capacity. All plans include burst allowances for traffic spikes.

Our data comes from official sources including Eurostat, ECB, national statistical offices, and regulatory bodies. We also integrate commercial data partnerships for market-level granularity. All data sources are documented in our transparency reports.

Quality grades reflect data reliability, completeness, and freshness. A+ (90-100): Excellent data with high confidence. A (80-89): Very good quality. B (70-79): Good quality. C (60-69): Fair, use with caution. D (50-59): Poor quality. F (<50): Failing, not recommended for production use.

Update frequency varies by dataset. Economic indicators: Monthly or quarterly (following source publication). Market data: Weekly. Model predictions: Real-time via API. We provide metadata with last update timestamps for all data points.

Accuracy varies by country and data availability. We publish live R² scores for each country model on our transparency dashboard. Production-ready markets (R² > 0.3) include Greece, Czech Republic, and Latvia. We continuously improve models with bi-weekly retraining.

Yes! Our free tier includes 100 API requests per day, access to basic datasets, and community support. It is perfect for testing and development. No credit card required to start.

Yes, you can upgrade or downgrade your plan at any time. Upgrades take effect immediately. Downgrades take effect at the next billing cycle. Unused credits are prorated.

Yes, we offer custom enterprise plans for high-volume users, custom SLAs, dedicated support, and data licensing agreements. Contact our sales team for a tailored quote.

We accept all major credit cards (Visa, Mastercard, Amex) and SEPA direct debit for EU customers. Enterprise customers can pay via invoice with NET 30 terms.

Yes, we are fully GDPR compliant. Our infrastructure is hosted in EU data centers (Azure Sweden Central), we provide data processing agreements, and support all GDPR rights including access, rectification, and erasure.

All data is stored in the European Union. Primary infrastructure is in Azure Sweden Central, with backups in Azure West Europe (Netherlands). We do not transfer data outside the EU unless explicitly requested.

API keys are hashed and never stored in plain text. We support key scoping (read-only, write, admin), IP whitelisting, and automatic rotation. You can revoke keys instantly from your dashboard.