Rule: the durable member edge has shifted from headline sold price (commoditised post-2018) to the deeper structured layer — build articles + products around that, not the just-sold figure

Rule. When writing about MLS value for Ontario agents/brokerages, the affirmative spine is the deeper structured layer (full field history, relisting chains, sub-market absorption, list-vs-sold spreads, off-market activity, ListTrac analytics) — NOT the headline sold price.

Why. HouseSigma — "first in Canada to make sold prices publicly available"; inflection point came shortly after the 2018 SCC-final outcome opening sold data on VOWs + Consumer portals commoditised the "just-sold" edge — practitioner consensus; portals cannot capture local nuances, off-market activity, or hold-offer strategies — consumer portals commoditised the headline figure post-2018. Durable member edge has shifted from headline sold price to the deeper structured layer (relisting chains, sub-market absorption, list-vs-sold spreads, off-market, ListTrac analytics) — the durable edge moved into the deeper structured layer that portals do not fully replicate. Parallels Research notes (capture-layer): the affirmative, inward decision-edge case for data intelligence — information asymmetry applied to pricing, demand, risk, retention, targeting (June 2026) R1 (information edge = counterparty disadvantage) applied to MLS.

How to apply. Open MLS-value articles with the deeper-layer thesis. Do not anchor on "we know the sold price" — readers already see it on HouseSigma. Anchor on what they cannot see: relisting chains, sub-market absorption, off-market patterns, listing-engagement signals.