What is a digital twin?

A digital twin is a digital model of a real-world asset that is meant to stay coupled to that asset over time — geometry plus, in the industrial definition, data that updates as the thing changes. Factories, HVAC systems, and some commercial buildings have twins. Listing marketing almost never does, even when the brochure says "digital twin."

How real estate uses the phrase

Vendors of 3D scans (Matterport is the brand people know; see the Matterport profile) describe a captured interior as a twin because it is a navigable model of this property, at this capture date. That is a 3D snapshot, not a twin that updates when the owner moves a sofa. It is still useful. It is just a narrower claim.

A restyled walkthrough is even less of a twin. It is a proposal: the walls are yours, the furniture is not in the house. Calling that a digital twin of the listing would be the kind of overclaim that earns a penalty box next to "Matterport killer."

When the word is fair

• As-built capture used by facilities, construction, or insurance, with a plan to recapture or to attach live data
• A scan that is the system of record for measurements, not only a marketing spin

Example

A property manager commissions a Polycam or Matterport capture of a unit at turnover to document condition. That model is a snapshot twin of the unit as returned. An agent restyling the same unit's listing photo into a furnished Contemporary living room is making a marketing proposal. Both can exist. Only one should be called a twin without wincing.

Related terms

• Photogrammetry — one way to build the geometry
• Gaussian splatting — another representation, used for look-arounds and walks
• 360° virtual tour — the buyer-facing product, twin or not
• As-built — documentation of current condition; opposite of a restyle