Beyond that, you need to become an expert on labor and material rates in your area or get connected with someone else that is. 

My long term investing goals are to build a portfolio and continue investing with my husband after this project.

Continue to do your research and also ask ChatGPT questions as well as I have been finding Ai to be super useful for research lately.

@Val BerechetI’m no expert, but I would just be aware that other countries have different laws, and that investing in the US it’s pretty clear what you are getting yourself into, but it may not be so clear in other countries as a foreign investor.

The tangible/measurable benefits do seem to pan out over the life of the system especially if energy prices continue to rise.

In the meantime I will continue the search for a new PMC and talk to our lawyer with the intent of filing a suit since odds are it will be needed. 

DSCR loans could be a good option if you want to continue to grow your rental portfolio.

There are but we have not continued in that particular area. 

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

However, if you'd like to continue to grow your portfolio and use your own funds (instead of OPM), then I would tend to say take out more than the 50k in order to fund future purchases.