This allowed them to grow their RV park portfolio even further.In determining how to select a cost segregation company to work with, here is an article that may help.

The article has some great graphs that are informative as they illustrate the housing price trends of 7 major metropolitan areas in the US, including the San Francisco Bay Area over a 20+ year period.

While certainly not as extreme as the examples in the article you shared, I've seen condo owners in many states hit with special assessments. 

Are you willing to start in less popular markets before competing with experienced companies using the big markets?

I saw your post and links and I also found articles about other states but not for MA.

I would read this article on the "core 4".

STR's are one of the more popular forum topics and 'complicated' investment categories (especially for newbies) so I wanted to share some recent investor and operator experiences on the Oregon Coast and why a coastal STR vacation rental home is worth considering. - Feasibility & Permit-ability: If you know where to look you can still secure a STR permit in most cities or counties from Brookings to Astoria.

Terrific article by WSJ writers about what retirement actually looks like if you are managing rental real estate.  

Seen this pop up on several “top 10 trends going out of style in 2022” type articles.

Nope - DSCR is typically the best option now for refinances - I actually published an article on this exact topic last year here on BiggerPockets - ALl the options for BRRRR financing (including refis) and pros/cons, etc - hope it helps!