It's easy to obtain, costs very little, and doesn't require extra, on-going effort to maintain.

They'll be all sorts of SIGNIFICANTLY EXTRA tenant complaints!

So I went with the advice to just get extra liability on my properties and call it good.

@Deepak Malhotra and @Pat HeidingsfelderCan you please give some data points? 

Before investing $1,500, I'd recommend checking if there is data showing potential tenants actually need/want this amenity.

On a fixed mortgage, i could pay extra payments (or a one time lump sum payment) and apply it towards principal.

As you said, they show up, answer questions about the local market, provide useful data when needed, and just are a general value add to the forums.I think it's fair for consumers to take what an agent says about the market with a grain of salt, but over time, their reputation for giving good info without the smarm wins.

What happens if the tenant takes an extra three days to move out?

The property is 3B1B and I plan to add an extra bathroom it 3B2B.

You need to look for a Securities Attorney (not a real estate attorney)As @John Sayers mentioned, you can get ownership with a GP by doing other things, like bringing the deal, asset management, data research, etc.