The gap between free and paid real estate data APIs is real — but it's not always about data quality. It's mostly about scale, freshness, and support. Here's what to expect at each tier.
What Free APIs Typically Offer
- 100–500 requests/day
- The same underlying data as paid tiers
- No SLA or uptime guarantee
- Community-only support
- Rate limiting without burst allowance
What Paid Tiers Add
- Higher request limits (5,000–100,000+/day)
- Burst rate allowances
- Priority support and SLA
- Historical data access
- Bulk export endpoints
- Webhooks or push notifications for data updates
When to Upgrade
The free tier is appropriate for: development, prototyping, personal tools, and low-volume production apps (< 80 ZIP codes/day). Consider upgrading when: you're screening 500+ ZIP codes, building a commercial product with multiple users, or need guaranteed uptime for a revenue-generating application.
| Scale | Tier Recommendation | Monthly Cost (approx) |
|---|---|---|
| Development / prototyping | Free | $0 |
| Personal investor tool | Free or Basic | $0–$10 |
| Small commercial app | Basic / Pro | $20–$50 |
| High-volume commercial product | Pro / Enterprise | $100+ |