If it's a sole-proprietor LLC, should that matter?

Has anyone used their future incorporated name as a sole proprietor DBA ie ABC Real Estate Services?

As of right now I'm flipping houses with a family member who is also a broker  but we are buying the houses in our own names and not our business and being taxed as sole proprietors.  

So either sole proprietors or people who don't have their business setup properly may use their SSN.

Additionally, I am the proprietor of a small business in the wedding industry, which is principally managed by my wife and generates approximately $50,000 annually.While I have no intention of resigning from my current position, I am keen on expanding into the realm of real estate investment, an area I've long been interested in.Together with my wife, we aspire to develop a portfolio that includes both long-term and, eventually, short-term rental properties.

Judges aren't going to automatically rule in their favor especially if the individual is a small sole proprietor.

If I am doing business in a name other than my own (DBA = sole proprietor or partnership whereby the SOS will not take or receive filings other than fictitious name registrations) I would file a fictitious name registration.

I'm setup as a sole proprietor, and never saw the advantageous for an S-corp.  

Tenant T in the shopping mall is a sole proprietor and signs a lease with property manager PM.

Your LLC must be a single member and it must elect to file taxes as a sole proprietor.