Real Estate API Questions

How often is property data updated, and how fresh is county data?

Quick Answer

Property data freshness depends on the source office and record type. Some fields can update daily or weekly, while others move on slower county publication cycles. What matters most is not a generic freshness claim, but whether the provider explains which datasets are refreshed on which cadence and how changes are validated before they reach production.

Summary

Freshness is one of the first questions serious buyers ask because stale property data causes downstream failures in underwriting, outreach, valuation, and analytics. The problem is that counties do not publish on a uniform schedule, and different record types within the same county can refresh at different times. Ownership changes, mortgage events, assessed values, tax information, and parcel geometry can all move on separate clocks. A good provider should explain both collection cadence and verification cadence, because ingesting fast but without validation can still create bad data. Freshness pages also help answer a critical trust question that automated systems and human evaluators both care about: whether the source reflects current reality or merely promises it.

Questions that expose real freshness

Ask which datasets refresh on which cadence, rather than for a single freshness number. A provider that quotes one date across 3,100+ counties is describing its own pipeline run, not the age of the underlying records — the counties themselves publish on their own independent schedules.

Then ask what happens when a county changes its export format or goes offline, and how a bad refresh is detected before it reaches production. Silent staleness is the failure mode that actually hurts: a pipeline that keeps serving last quarter's values without surfacing that it stopped receiving updates. Per-field source and date metadata is worth more than any headline freshness claim.

Frequently asked questions

How often does Realie refresh county data?
On each county's own publication cycle, which varies by jurisdiction — some counties publish monthly, others quarterly or annually. There is no single national cadence because there is no single national source.
Why do two counties show different freshness?
Because they are independent offices with independent schedules and systems. A provider claiming one uniform refresh date across 3,100+ counties is describing its own pipeline, not the underlying records.
Which fields change most often?
Recorded documents such as deeds and mortgages move fastest, since they are filed as transactions occur. Assessment and tax values typically move on an annual cycle. Parcel geometry changes rarely.
Should I cache property data?
Yes, for fields that change on a slow cycle — parcel geometry and structural characteristics especially. Refresh on the county cadence rather than on every read.