It checks your pool water at times you select and sends you a message after each reading.It connects to your Wi-Fi.

Since we have commercial loans we only get 20 year terms and the bank requires us to keep at least 25% equity and I do like some additional equity cushion but above that I like to re-fi out my down payment and renovations asap-- so that we can use the money to buy more propeties.

By year 12-15, re-fi 1 and sell 1.

Target re-fi within 6 months3.

My wife and I hit our FI goal; we have time and can live off of our assets.

Cash buy with sweat equity in renovation allowed for quick re-fi.

So anyone thinking short-term appreciation, or i'll re-fi in a couple of years, or is doing this with limited liquidity will get royally screwed.

House Hacking in NJ has gotten my wife and I to FI in a relatively short period of time you can house hack anywhere in all honesty. 

Then later sell the re-fi one in another 5-7 years and have 3 very good properties with cash reserves and 0 debt.

Only garbage, water/sewer & Wi-Fi.