Personally, I would ignore the 30 day delinquencies. They can be skewed for a variety of reasons and in some months can be quite high. A good example is when HOA fees go up – it can take several months for homeowners to adjust and therefore they will show up on the delinquent list for the delta between the old and new fee rate.
I would watch the 90 days or more category, and from my experience having 5% or less in this category is typical. 10% would start raising my eyebrows, and if you get much higher than that I would start asking questions.
