Every smart-home product on the market is device-first and building-blind. PropEasy is the layer underneath: what the building is, what is installed in it, and what has happened to it.
A thermostat knows the indoor temperature. It does not know it is regulating a 1926 bungalow with an uninsulated rim joist and a furnace older than its owner's mortgage. A hub knows which lights are on. Neither knows the house. That gap is where the useful decisions live.
Construction era and structure, drawn from assessor records across every metro county, and read against era profiles rather than guessed from a photograph.
What is actually installed — furnace, boiler, water heater, air conditioning — identified from a rating plate or the permit record, with age established rather than assumed.
What an evaluator wrote down about the building, where a point-of-sale evaluation exists, itemised rather than summarized.
Permits pulled, work done, and the weather the building has actually been under, including hail at parcel grain.
Products differ, and pretending otherwise is how automation earns distrust. Host policy — the times you keep, the buffers you want, the things you opt into — is yours and is always shown. What a device can express is shown only when the connected product actually honors it. Where a device is not identified, we say so rather than assume a default.
If you build hardware or a service that acts on a home, you have actuation and telemetry and no building context. That context is expensive to acquire and we hold it at metro scale. Integrations stack: each one rides the same substrate instead of rebuilding it.