Minor fluctuations.

In reality I have more than enough cash flow each month to cover the repairs and maintenance of the units even as it fluctuates month to month.

That can fluctuate quite a bit. 

I’m sure they fluctuate between brokerages and localities.Any help would be greatly appreciated.

Your credit score can fluctuate wildly.

@Azmat Hossain - Since there are too many factors that cause price fluctuations, and given that we have not seen this type of situation in more than a generation, taking a "wait and see" approach is best, as market direction should become clearer over the next several months.

Keep in mind that C & D class neighborhoods tend to need more major repairs than A & B class neighborhoods, so the allocated percentage will fluctuate. 

Yes it is very unprecedented times and I worry that the worst is still ahead of us, as far as a potential housing crisis that ensue in the upcoming months depending on how long this lasts and what happens with rent / mortgages, but I do think real estate is a safer investment than stocks right now in the fact that you won't see houses fluctuate 30% in one month, but there definitely is a lot of fear and uncertainty in my local market right now for sure. 

I want to learn how the value of a house fluctuates and also how it can affect my career.

Although a HELOC has little to no cost it's an interest only payment and will fluctuate based on the prime rate.