10% down 2nd home loan and savings from the proceeds of already owned STR's.

These names frequently come up in investor circles because of their reliability.Speak Directly to Their Team: Legitimate lenders will have knowledgeable representatives willing to explain their loan products and processes in detail.

If so what are his loan requirements?

Most 1-4 unit real estate investors are using DSCR loans right now for any buy and holds while flippers lean on higher leverage bridge/fix and flip loan options with higher interest rates.

DSCR loan How did you add value to the deal?

Or, depending on the property you could go non-QM with like a DSCR loan and close in an LLC or partnership.

Are you needing a long term or bridge loan?

Hi Treza,Not sure where you are in the process there, but when your ready to exercise financing options please reach out, it's very difficult to find a ground up program for inexperienced borrowers without having an experienced GC sign on the loan with you which in turn is not easy to find. 

However, consider STR seasonality, local regulations, and management demands, and ensure your equity loan and new primary residence costs fit comfortably within your budget.

For active investments I advocate considering how you can diversify WITHOUT ceding your competitive advantage nor the superior profitability of the niche your in.As an example my business is running an investment fund and syndication high interest commercial mortgage loans secured by income producing real estate.