Attic insulation is one of those things that I am not sure how much practical effect there is, I only add attic insulation whenever the government subsidizes the cost, and after it's done I don't see any cost saving in my utilities bills (student rentals). 

What are common practices to remove them?  

Additionally, for rate-term refinances, many DSCR lenders have no seasoning requirements at all.Easier qualification: DSCR lenders have much lighter qualification requirements than conventional or portfolio lenders, such as no DTI, income verification, or tax return hurdles that can slow down or disqualify loansFlexibility: While conventional and bank lenders are heavily regulated and follow standardized rules, DSCR lenders have much more flexibility and control over their guidelines.

Bonus depreciation is phasing out, but a cost segregation study can still help with tax benefits.Make sure to stay compliant with local laws and HOA rules, as regulations are strict.

In practicality it attached to all real estate owned in that county, but the plantiff can refile the judgement in multiple counties where the defendant owns real estate. 

It does come down to your goals, your time to allocate, your business sense, your ability to bring or raise capital, and what you are trying to accomplish.I am personally not a fan of short term rentals, as it appears regulations in many cities keep making it harder.

At least that's the practical approach.  

Rent-by-the-Room (Long-Term)If local regulations allow it, renting out units by the room might generate more income than traditional long-term leases.

@Anibal Mijangos - Rental arbitrage is a great business wherever you can find below-market rental units and favorable STR regulations in strong Airbnb markets. 

Careful regulation and oversight are needed to ensure that such programs truly benefit those they aim to help without unintended negative consequences.