I think response rate is very important because from what I see a lot of calls can be translated into profit even if it's just a referral to a realtor.

Send them a statement with the incremental charges after that's been completed.When they don't pay the full balance you have a stronger case to evict for non-payment than only simple code violations.Depending on the state evicting can be more difficult for only breaking a certain sub-section item of a lease not related to rent, so always try to translate the issues you have back into a non-payment problem.But to your question.  

Facebook Ads and Google Ad words possibly.I think there is phone systems where you can have voicemail's that prospective sellers leave and it translates to an email.

Which still should translate to double digit coc, again, depending on the ARV.

Me, about a year ago*Furiously using Google Translate to convert German tax returns into English as quickly as possible

I would either look at your state/city rental board or pay the hundred or two hundred dollars for a professional translator.

I do believe that reading something and hearing it face to face something gets lost in translation.

He is ready to sell because he has two houses, which translates to 2 mortgages.

There are classes at your community college that could translate into a good paying hourly job like CAD for example.

Yes that 1.67% is monthly which translates to 20% annually.