If a LL asked required income and credit before hand then that is a red flag and I would be avoiding that property like te plague... giant red flag about that landlord... it is perfectly fine though if they list the qualifications and ask if the tenant meets those qualifications. (biggerpockets.com)
To a business owner a prospective employee who asks to see a detailed job description is waving a giant red flag. (inc.com)
Anything below a 1:1 ratio is a giant red flag that you have negative working capital — even if you have cash in the bank at the end of the month. (ondeck.com)