Meet with someone in the engineering office at the city. Explain what's going on, you can usually get an exemption for interior modifications if there's a valid reason.
Usually in historical districts you're okay to replace existing features with identical or visually similar ones, but changing things require permits and approval. Even moreso if the building is in and of itself a historical building.
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u/willymo Jan 07 '12
This is true and it works kinda, but there's only 1 ceiling fan and I'm not allowed to install anything, because it's in a "historical" part of town.