Choosing the right real estate data API depends on your specific use case. This comparison looks at ZipMarketData and Zillow API across coverage, freshness, pricing, and developer experience.
At a Glance
| Feature | ZipMarketData | Zillow API |
|---|---|---|
| ZIP-level market stats | ✓ Market + rental + yield | Property-level estimates |
| Rental yield calculation | ✓ Built-in (HUD data) | Manual calculation required |
| Affordability index | ✓ 900+ metros | Not available |
| Individual property data | Aggregate only | ✓ Zestimate + listing details |
| Free tier | ✓ 100 req/day, no CC | Limited; requires account |
| Daily updates | ✓ | Weekly on most data |
ZipMarketData Strengths
- ZIP-code aggregate market stats — yields, cap rates, DOM in one call
- HUD SAFMR rental data built in — no separate rent data integration needed
- Affordability index across 900+ metros with Census income data
- Daily updates; free tier available without credit card
Zillow API Strengths
- Property-level Zestimate valuations for individual addresses
- Listing photos and property details for consumer-facing apps
- Broader brand recognition among consumers
- Walk Score and school data integrations
Use Case Recommendation
Use ZipMarketData for investor market screening, yield analysis, and developer tools. Use Zillow's API for consumer-facing apps that need property-specific valuations or listing images.
Developer NoteZipMarketData's free tier includes 100 requests/day with no credit card required — ideal for prototyping. Interactive docs are available at /docs.