eveonline.corporation_office(meandmyfancytitles) returns things
Location
ID
Rent
Permissions
Give-me-time-to-think-of=more
PS: I saw the part about doing an inventory to locate the ID.
The only way we expose things in the addin for corporation offices are in the tags on assets in corporation_assets.
The info is not in ESI as far as I can see from the api explorer, but I could be mistaken as I’m running very light test corporations for testing purposes. But it sounds like a very useful thing to have, if it were available.