I would consult @Jeremy Galloway before making that decision.

To succeed, consult with a local realtor or property manager, split utilities/responsibilities, and explore niche rental platforms like Hipcamp.Good luck!

(Yes, I understand comments provided are simply educational, I will consult with an attorney before moving forward.

Consider if it will truly benefit your tax position, liability protection, or asset management, or if it will just add unnecessary paperwork.If you’re in a state like California, keep in mind that you’ll have to pay $800 annually to the Franchise Tax Board, file a periodic Statement of Information (SOI), and submit a Beneficial Ownership Information (BOI) report.It’s a good idea to consult a real estate attorney to ensure you’re making the best decision for your specific needs.

Have you consulted a financial advisor?

Trying to figure out the optimal strategy that will provide liability protection, proper estate transfer at death, and other strategies that can benefit their tax situation.I have my ideas, but want to consult with someone who has estate and tax planning experience in CA.

Plenty you can do, even at 15.I think a guy your age for example could develop a nice small business of iphone consulting. 

This is something to consult with an attorney about.

I'm an Airbnb/VRBO owner myself, happy to help consult on some design improvements, but it'd be helpful to learn more of what your goals are.

I would recommend consulting with an attorney to find out why you would need a separate LLC for each property.