NAR VOW policy — minimum of 3 years of sold data required in IDX/VOW feeds

reference · Scope: business · Status: current

Created 2026-06-21

Summary

Claim. NAR VOW policy requires a minimum of 3 years of sold data in IDX feeds; vendor sources (Realtyna) note VOW feeds can include sold listings going back five years or more, expired listings, full sales history per property, original list price, price changes, and days on market.

Source. nar.realtor (primary on the 3-year minimum); Realtyna (vendor blog) corroborates the upper end. Accessed 2026-06-21.

Confidence. Verified for the 3-year minimum (NAR primary); single-source/industry-consensus for the upper-end "5+ years" framing.

Caveats. "Minimum of 3 years" is the floor; individual MLSs commonly carry more. The 5+ year framing is Realtyna's vendor account, not NAR policy.

Implication / use. Floor figure for the historical layer's depth. Use as the conservative baseline; PropTx's 3/5 figures are board-specific.

Related entries

Depends on

research-notes Research notes (capture-layer): inside the MLS box — what an Ontario member agent's account exposes, what goes unused, and what they're licensed to do with it (June 2026)

reference VOW (Virtual Office Website) — password-protected, requires established broker-consumer relationship, carries the deeper historical/sold/off-market layer

Referenced by (1)

research-notes Research notes (capture-layer): inside the MLS box — what an Ontario member agent's account exposes, what goes unused, and what they're licensed to do with it (June 2026) · relates-to