I utilized a home line of credit on my first primary residence to purchase my following two real estate deals.

We will be moving out at some point and renting the entire property; each likely moving in our own directions with future investments, but both wanting to utilize the HELOC for these investments (e.g. down payment, renovation, etc).

For the other numbers like landscaping and utilities, you should use a general number.  

Don’t forget bringing in 4-6 sets of utilities, driveways, etc. 

Wish I utilized this more early on in my wholesaling ventures. 

Or maybe some utilities.

The larger loans (at least $1M or more), can qualify for more favorable terms.If you are interested in larger multifamily, then you should read up all you can about it and utilize forums like BiggerPockets to ask questions. 

If it is in fact zoned multi family then the city services will have separate addresses because of the utilities and billing.

I’d be okay with having to pay a little rent/utilities myself ~200/mo.

It's definitely something I explored and want to be able to utilize my skills, however, would like to find a way to find some skin in the game of RE.