Not a deal. If you count on 50% of your rent going to expenses, which you should, then you’re left with less than $700 a month in profit for 20 units. You need to get the price way down for this to be worth your time.
Purchase price: $700000
20% Down payment: $140000
Net Operating Income: $10000/mo * 12 mo/year * 50% expenses = $60000/year
Mortgage: $560000k for 20 years @ 7.1% = $4375/mo = $52500/year
Cash flow = NOI – Mortgage = $60000 - $52500 = [u]$7500/year[/u] ($31 per unit per month)
Return on Investment = Cash flow/Down payment = $7500/140000 = [u]5.4%[/u] (Ignores closing costs and misc. out of pocket expenses)
This is awful using almost any criteria.
If you pay $600k and keep the terms the same, your cash flow becomes $15000/year ($62/per unit per month) with an ROI of 12.5%.
Anything you can do to get your cash flow up here would be a good thing: lower purchase price (well duh), longer term loan (interest only?), larger down payment, etc.