Do nothing...the tenant isn't renting that area and has no right to dictate how you use it as long as it poses no security/safety risk to them. 

Building out my portfolio with strategic, secure passively cash-flowing assets to continue to build leveraged equity.

I can tell you that you won't secure a REFI term longer than the term that is left on your lease. 

Sometimes it’s the smartest move to gain liquidity and to secure your position with your remaining properties.

While I'm not entirely discouraged, I feel like I've invested significant resources (LLC, website, domain) without securing a deal that generates cash flow.Any advice or guidance would be greatly appreciated. 

I’m curious, what’s been the biggest hurdle for you when it comes to securing funding for your real estate projects?

You will have sunk about 14k plus closing costs into the deal.In a few months the work is done and you get a PM to find you a tenant and get a lease and collect first month and security and now you can do a 75% cash out on that 215k. 

Well there's a reason they screen their borrowers, secure their loans with a first position trust deed/mortgage and charge a small fortune to make such a loan.

Investment Info:

Single-family residence fix & flip investment.

Purchase price: $600,000

Cash invested: $100,000

Here is an investment Flip Property I found for my clients in the highly desirable...

Quote from @Jason Taken: did you actually have a secured lien?