The most comprehensive guide I've found is at https://www.therealestatecpa.com/guide-to-qualifying-as-a-real-estate-professional (no affiliation)

To assist investors in understanding their options, I propose creating a comprehensive guide to down payment strategies.

I now have a comprehensive list of people to call for anything.

There are so many so be sure to filter by your location. 4) Review this comprehensive 64 page deck on the state of the 2023 housing market for real estate investors put together by Dave Meyer and available for all BiggerPockets members.5) Consider meeting with a few agents in your area even if you are just getting started!

I posted an introduction a while back but got taken down due to me being new to the forums and not being aware of the rules yet (rookie move). 

There are so many so be sure to filter by your location. 4) Review this comprehensive 64 page deck on the state of the 2023 housing market for real estate investors put together by Dave Meyer and available for all BiggerPockets members.5) Consider meeting with a few agents in your area even if you are just getting started!

@Rob Kulp Unless someone from the same location has posted a list, you're not going to find a comprehensive list, because what requires a permit in one location may or may not in the next.  

Ultimately, the decision should be based on a comprehensive financial analysis and a clear understanding of the potential costs and benefits.

Any number of things could be happening and I'd prefer to come up with hypothesis there until further info is provided.If the HOA etc does not openly provide the above info, and say it is an issue with a more comprehensive boiler related/design issue, there should be some recourse for you. 

Crushing It in Apartments and Commercial Real Estate" by Brian H Murray is a great primer and introduction if you want to go bigger and focus on commercial real estate.