The total replacement cost will be a fixed amount, and once she get's up to $400 the plan is to have it replaced.

The total rents are $2,300, and heat in the winter runs $200/mo, and water runs $100/mo.

I own 2 homes in the DC area and have a total of about 400k equity on one and 100k equity on the other.

Is there an "average" total tax percent I could use across deals to get close before I dig deeper for the actual numbers  or do they vary significantly? 

This happen 8 yrs ago I was young and made some mistakes imma totally different person now.

in the total payments and he just makes the payments for those items when they're due?    

Your shares should be based on the total investment dollars needed.

Penfed.org a credit union based out of OR I believe will go up to 80% LTV with a 2nd position HELOC but the problem is they have a limit on the number of total financed properties at 3 max including your primary (last I checked with them).

@Michael Ehmann, Im not totally sure, ideally Snellville or somewhere near the Gwinnett/Dekalb line.

Additionally, I worry about your approach as it really relies heavily on appreciation in those areas, which traditionally do not appreciate much.