We prefer to just say on or before 30 days to give everyone time to breathe.This has been a successful formula the past several years.

Thanks Jon, I've got Excel, would you have the formula I'd need to calculate each payments amount to principle and amount applied to interest?

I had them make a custom formula to try to match the original paint in one of our apartments, and I've used that formula for all our units ever since.I've heard that expensive brand names like Dunn are better paints.

Simplistically, the model is develop, build, rent, sell - with the formula being:Sale value - costs = profits (if you are long term hold then: cash flow / equity = return on costs)So often we see folks get in love with their projects, then start to lose site of the "gut check", keep gut checking at every level, every step if you can, keep your model/proforma open, and update each time you get a new data point on rent, costs, etc.Ann and Weston have the advantage of having done it before, so they likely have some general sense of sale values when a small apartment project is complete, and Ann for sure has the costs dialed in.

So your  "50% rule" cash flow calculation looks something like:CF = (FM_rent / 2) - PIBut if you have actual expenses that you can use, then the cash flow calculation looks like:CF = FM_rent - expenses - PISo try adjusting your formulas accordingly.

How you know you have found a deal that fits into this exclusive group is to learn the math formulas that biggerpockets can teach you such as in this blogpost https://www.biggerpockets.com/renewsblog/easily-an...I only skimmed this post but it looked accurate.

I have been studying it for some time in its entirety but I will tell you that my eyes still go glassy, trying to figure out the formulas for more complicated scenario's. 

Just depends.But if you own 4 rentals and say you did 4 deals, I'm going to estimate your bill around $800 - including the individual return, which I believe truly is fill in the blank work once you get past the real estate stuff.I'd be curious to know from @Nicole W. and/or @Arlan Potter , how many properties they own and how many transactions they did (i.e. say flips) to see if that formula rings true at all. 

We use the same formula with all the buildings we own.  

The laws which govern the formula for distribution (called laws of consanguinity) are always state statutes.