We mainly flip houses together but I also have a W9 job. 

I do 2 houses at a time as a part of our agreement.

The house + the land around it is what's being sold (Multi-Property Land for Sale, is what the sign reads - and it's a lot of land).

The house is currently rented for $2,150. 

I was in the military and bought a house in Fayetteville, NC since I was stationed there-which I now rent out...That was two years ago, and I have not made much movement to further my real estate investing journey, until now!

Lastly, house hacking lets you live in a multi-family property while renting out the other units to cover your mortgage.

Hey Jean, no hard rule to this but with properties I've sold, I always think it's best to communicate with your tenants to get ahead of any potential issues.1) Potential buyers will likely need to walk the property, so you'll have to schedule with your tenants.2) They might see the house on Zillow, Redfin etc and think "Am I going to get kicked out?

My question is: should i do separate water meters now as something for the future or keep the water under one house meter?

I have seen banks sell a house in Detroit for instance for 8k and broker charged 5k.. 

The only time I recommend an investor take a negative cashflow deal is if they have a high W-2 job and need to offset taxes, and /or they can afford to wait for a house to appreciate.