No one can predict the future.

I have never seen Zillow being able to accurately predict the future appreciation of properties, although the past appreciation does seem pretty reliable. 

Future DemandWhile no one can accurately predict the future, you can infer what a market is likely to do by looking at current and recent trends.

Yes market is at a peak and it will fluctuate but you can't go back and buy at a lower price and you can't predict the future. 

The future is almost impossible to predict and your equity growth could stop anytime. 

I see a lot of P&L projections that list taxes and insurance as the only expenses and then use projected rents to calculate income (It's amazing how many rental properties are listed for sale with rental rates far below market rates).The snide replies to your post are predictable from this group.

I’ve seen investors with larger portfolios eventually see it level out and become more predictable since you can spread those expenses out across more buildings/doors.

If you can't sustain the predicted cash flow, you aren't winning.

Studying that area in the past performance of home values can help you predict the future but it is still a little difficult. 

I made a bet and predicted SFR median at 294k, and 17.6% year over year.