And in many cases this may be warranted as health and safety issues may be present.  

The bank had a problem with my holding LLC and after speaking with the law firm who created the LLC they were still confused. 

Of course, with all things, the answers to all these matters will depend on the circumstances.California tends to have more laws on the books and requirements and restrictions that it can be a good idea to form a CA LLC for out of state property so that you as a CA resident are covered, and to try to have your contracts fall under the purview of CA courts.

I’m especially interested in spots with strong short-term rental (STR) demand, where the laws are favorable to investors.I have around $250,000 USD to put down as a deposit, and I plan to finance the rest through a mortgage.

.), please describe for me the worst-case scenario for an eviction process if the tenant refuses to leave at the end of a lease term (assuming I do everything properly according to MA laws)?

I invest with my brother in law, Jeff Harding.

And in certain markets like SF bay area if the sewer line is of a certain age its mandatory to replace it before close of escrow its a law.

The difference between a safety line and a safety net is that a safety net (your words) can break one line and still hold a fish. 

It's a flexible approach, suitable for both single-family homes and multi-unit properties, and can be tailored to fit your lifestyle and financial goals.It's important to research local housing laws and market conditions to ensure a successful house hacking venture.

Taking legal action against another party necessarily involves questions of law and can result detrimental legal impacts on him if he files a lawsuit without proper grounds to do so, or where the opposing party may have counter-claims against him.