Das Gebäude wurde/ist gebaut

Das Gebäude ist gebaut." - The buiding is in a state of having-been-built-ness
"Das Gebäude wurde gebaut." The act of building took place in the past.

The difference between 'werden' and 'sein' is roughly the the same as that between (informal) 'get' and 'be' in English in passive constructions.

So there is a subtle difference in register or you were only comparing this pair of words ('get' and 'be') with similar difference as an exemplary pair which came in handy when explaining how big the difference in meaning between "sein" and "werden" actually is?

In English, the 'get' passive, though useful in theory, is regarded by many as sub-standard. Speakers of standard German can indicate economically and acceptably the difference between a process ('werden') and a state ('sein).

In the English forum, we are sometimes asked whether a word following BE is a past participle, and therefore part of a passive construction, or an adjective. That q