LLC Sells Property -- Business Income or Capital Gains?

[Mark Beekman]

I just bought a SFH through my LLC and I'm still not sure if I'm going to flip it or rent it. One thing weighing on my decision are taxes.

If a single-member LLC owns a property, rehabs it, and sells it, are the profits deemed "business income" or "capital gains"? If I owned a home in my name, personally, I would probably rent it out for at least a year before thinking of selling in order to avoid short-term capital gains. Does this work with business owned properties as well?

I also have a self-directed Roth 401k, so I'm wondering how my real estate profits will figure into my contributions.