recession proof cash flow level

[Mike R.]

Hi all and thank you for your replies,

we own several multifamily properties (duplexes and six units) with a buy & hold approach.  All have been cash flow positive since day one and, given they are all in the pacific northwest, has enjoyed significant price appreciation (1x-2x on all of them since '08).  

now the problem, i am concerned about a recession (i bet either by end of '18 or in '19) and longer term i am concerned about 1) public unfunded pension liabilities 2) interest payments on US debt 3) impact that automation will have on employment/renters...basically longer term i am worried about a S^%$ Hitting the Fan scenario.  So my question is, what level of net cash flow (net of all expenses, debt payments, 3-5% rent reserves) is recession proof?  is it $300 per door/month?  $500?  you can assume we have adequate reserves to cover 6 months of expenses.