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You've chosen the wrong form. "intermediario" is correct for a broker, but we use "agente " for a real estate broker. This is related to a particular contract we have in our laws, (contratto di agenzia) which applies to real estate as well, among other things..
The google terms should have warned you (449) and the 0 ov searches too.
AgentiImmobiliari.com would be better for sure, but is regged since a while, as the singular.
No luck with AgenzieImmobiliari too..
If you need a bit of help in future, just PM me before registering
