Whatever would be appropriate for an interview in your field at a regular place of business

Business casual or a suit. No jeans.

it must be past my bedtime. I read, "Job interview in someone's home…in my underwear?"

LOL

Ok back to business. Underwear, under your suit.

Suit

I would wear regular interview attire- it's still a real interview

I have an interview for a small company where everyone works from home. Their headquarters is the owner's home, which is where I will go for my interview. How should I dress? I feel like regular interview attire, such as a pantsuit, might seem too formal in that setting. Yet, I don't want to be disrespectful by underdressing. Maybe a buttondown shirt, khakis or black pants with low heels or flats?