This is super important because if you miss on point #1 above, you still have a "buffer" to insulate you to some degree from short term market fluctuations.3)I ALWAYS make sure financially I can easily afford to hold the property through thick and thin.

@Joel Owens  my small city was ranked number one in highest appreciating markets during the last housing crash because it doesn't fluctuate up or down ever...A duplex that someone bought in the 90s for $50,000 (If it's still standing) still is bought for $50,000 today.  

Plymouth and Ann Arbor "fluttered", but as long as you were not forced to sell, you were fine...actually more than fine.The cash flow being positive allows the REI to still profit during those times of flux...whether they are large or small spreads in that fluctuation. 

People's credit scores fluctuate over time.

@Atwan Kwan,My accounts fluctuate, but usually my checking has the largest balance.

I would look at experience level and if they have adequate insurance coverage to protect holding your 1031 funds as an intermediary.Costs are pretty similar for a basic exchange on rates with minor fluctuations.

Sure, there is volatility there, which is why buying right is important to insulate you from short term market fluctuations, but if you hold for the longterm I believe it is perfectly reasonable to assume the long term average.

I'll update this forum again when I have "official" rental numbers to report (mostly for my own accountability).Being a first time homeowner/house hacker I fluctuate wildly between excitement and terror but so grateful for the advice/support of the BP community!

To make things even more fun, some lenders price discount points (additional upfront fees) into the rates that are quoted without clearly disclosing that to you, AND rates can also fluctuate throughout the day.

Seller costs will not fluctuate with the type of financing the buyer chooses to take out.