@Abhijit JoshiFirst, please understand that, for federal income tax purposes, an LLC can choose to be treated as a corporation, as a partnership or as a sole proprietor.  

I called a CPA for advice on it and was advised not to, and to just go ahead and when tax time comes, file as sole proprietor.

If you are the only owner, the IRS will see the LLC as a sole-proprietor, so your taxes will be no more complicated than they are now.  

@Anastasia G.I have a SEP IRA SDIRA account (non LLC)@Brian EastmanI am a sole proprietor LLC non-incorporated so the Solo 401k does not apply as I don't take a salary, but thanks for the tip.

Many businesses are run as sole proprietors. 

Also, there is no difference from a taxation standpoint between a single member LLC and a sole proprietor.  

Forming an LLC for each property may seem extreme to some, but perfectly rational to some.The real cost of owning a property under an LLC as opposed to just buying it under your own name is similar to why people don't feel its wise to do business as a sole proprietor as opposed to an LLC or a corporation.

This means that then new LLC is a single member LLC and has elected to be taxed as a sole proprietor. 

It also must have elected to file taxes as a sole proprietor. 

My question - can I issue a 1099 NEC/MISC to my realtor as a sole proprietor (using my name as Company name ) or do I need to incorporate/form an LLC first?