At that time, the remaining depreciation will be freed up and can be applied against my passive income that I make from the sale (but still not against any active income I make as a real estate agent). 

The in-place plumbing will overkill, so if over time you lock and shut down a couple bathrooms (so you have less to maintain), whatever. 

Now it's stable, and time to take out the hard money with long term institutional debt.

EDUCATE YOURSELF - yes, it will take time, but will lead to a selection that better meets your expectations & avoids potentially costly surprises!

Most will convert over time.

Cant tell you how many times that has saved us form an argument or at court!

That being said, I’m having a hard time understanding why your client is looking to estimate the NPV of his triplex.

marketing times can be 60 days ( quick) to one year or more.

Push relationship-building and learning and make sure that your current house hack is getting fine-tuned all the time.

My current home was a duplex at one time and I was planning to keep it and rent it as one.