Real Estate APIs let you add real estate capabilities without building from scratch. Every entry below is profiled with trust signals — pricing model, authentication requirements, CORS support, rate limits, and live uptime checks — so you can compare options and pick production-safe choices instead of guessing from a link list.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| RapidAPI Real Estate RapidAPI Real Estate: property listings, market data, and rental estimates across US markets. | Freemium | API Key | Yes | Profile | |
| RentCast Retrieve real-time property and rental data for real estate in the United States | Freemium | API Key | No | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.