Those now have to be replaced - and your state may have similar restrictions, so check into that in advance. 

I walked away from a successul 20-year career as an HR Director in Silicon Valley to do this full fime and I have nearly replaced my corporate income.

The unit was 20 years old and most of what was replaced was at the end of its life cycle anyway .

My replacement CPA retired after I requested he file my extensions.

Most people outside the profession don’t understand the time and capital it takes to make a project come to fruition.Before a single piece of equipment touches the ground, there are years of government meetings, environmental and site assessments, engineering studies, etc.Each step requires significant time, effort, and capital investment.But when done right, it creates a ton of value and transforms communities, which is why I love it.

Hoping to replace my income over time with multifamily units and utilize house hacking.

"Removing a door and leaving it open"  are you pulling the door casing, replacing it with drywall, trim board?

Painting, replacing light fixtures, swapping out carpet. 

Probably replace the wooden porch down the road sometime but happy with my purchase.

I also did a sewer scope as well that showed that the roots has gotten into the sewers and needed to be replaced immediate.