Mostly this would just be a problem if all 4 tried to take a shower at once.As far as billing, you could put the gas on a separate meter (of the owner meter, if there is one), then put separate metering devices on each HW lead to the 4 units.

He says it would improve home resale value and we could use 3-prong outlets (that actually serve a purpose) so things like PC's and other devices that require that plug could have grounding.Has anyone done this or have any insights? 

Taking away ground will make a device more sensitive to damage from ESD (shocks, power surges, lightening).

Then I create a cell with the current date.

I can't sign a new cell phone plan and then demand unlimited data after the fact. 

Do you have things in your possession worth money that you don’t need (think fancy new devices when older ones would work)?

**So I tend to share more ideas along those themes vs Buy/Rehab/Flip and pocket Highly TAXABLE one time income.ok pm me and Ill share my cell and I'll be glad to keep you posted on my 'classes'.  

My best friend of 35 years and business partner 10years passed away Oct 2019, Sadly small cell Lung cancer stole his life in 6 months.

It is a low power way for devices to communicate.

Do you have listening devices/cameras in your listings?