The rules are not limited to owner-occupied properties.
338.3 Nondiscriminatory advertising.
(a) Any bank which directly or through third parties engages in any form of advertising of any loan for the purpose of purchasing, constructing, improving, repairing, or maintaining a dwelling or any loan secured by a dwelling shall prominently indicate in such advertisement, in a manner appropriate to the advertising medium and format utilized, that the bank makes such loans without regard to race, color, religion, national origin, sex, handicap, or familial status.
The OCC doesn't have a requirement any longer as it used to refer to a HUD requirement and HUD removed it. The OCC hasn't seen fit to include it I assume because most lenders always do include it and it matters not whether its business, consumer, owner occupied or not. It's simply a good thing to do. If I'm evaluating a lender, one says it's equal opportunity and the other does not, what message does that send?