Insights & Updates

Tutorials, comparisons, and deep dives into real estate data — from the team building RealtyAPI.

More Articles
Uptime Guarantee Explained: SLAs, Real Numbers & Demands

Uptime Guarantee Explained: SLAs, Real Numbers & Demands

Cut through SLA marketing in this 2026 guide. Learn what uptime guarantee numbers mean, how credits work, and how to hold vendors accountable.

August 13, 202613 min
Cache Invalidation Strategies for Real Estate APIs

Cache Invalidation Strategies for Real Estate APIs

Learn proven cache invalidation patterns for API-backed real estate data. Covers TTL, webhooks, versioning, CDN purge, and concurrency controls.

August 12, 202614 min
Circuit Breaker Pattern: Build Resilient Systems in 2026

Circuit Breaker Pattern: Build Resilient Systems in 2026

Master the circuit breaker pattern for building resilient systems. Learn state transitions, threshold tuning, and code examples in JS, Python, and Go.

August 11, 202615 min
Is There a StreetEasy API? Yes — How to Get NYC Listing Data

Is There a StreetEasy API? Yes — How to Get NYC Listing Data

StreetEasy has no public API. Here's what actually works in 2026: scraping options compared, plus hosted StreetEasy endpoints with code you can run today.

August 11, 202610 min
Running a Comparative Market Analysis With a Real Estate API

Running a Comparative Market Analysis With a Real Estate API

Pull comps programmatically, build a CMA adjustment grid in code, and write a simple AVM. Real endpoints, real responses, and honest failure modes.

August 11, 202614 min
Best Real Estate Listing APIs in 2026, Compared

Best Real Estate Listing APIs in 2026, Compared

An honest comparison of the best real estate listing APIs in 2026: RealtyAPI, RentCast, ATTOM, Bridge and SimplyRETS, with real pricing and limitations.

August 11, 202613 min
Free Real Estate APIs: What You Actually Get Without Paying

Free Real Estate APIs: What You Actually Get Without Paying

What's genuinely free in real estate data: government APIs, research CSVs, and free API tiers with verified quotas, real limits, and working code.

August 11, 20269 min
How to Calculate Home Equity Loan Payments (Formula + Example)

How to Calculate Home Equity Loan Payments (Formula + Example)

The exact formula behind home equity loan payments, a worked $150,000 example, LTV borrowing limits, payment tables, and why APR beats the quoted rate.

August 11, 202611 min
Is RealtyAPI Legal? How We Source Data and What You Can Build

Is RealtyAPI Legal? How We Source Data and What You Can Build

Is RealtyAPI legal? A direct answer from the team: how we source public listing data, what US courts say about it, and what our terms let you build.

August 11, 202610 min
Mastering Energy Efficiency Rating for PropTech

Mastering Energy Efficiency Rating for PropTech

PropTech developers: Master energy efficiency rating. Our guide covers global standards (EPC, HERS), data sourcing, and API integration.

August 10, 202614 min