Based on the last cycle, 3-5 years after the peak. Admittedly your area may very. My bestie and Temecula guy got smoking deals in Temecula earlier, because it crashed earlier. I bout in MV in Aug 12 and missed the bottom by 9 months or so.
If my memory serves me the peak was somewhere between Aug of 05 and Aug of 06, depending on which set of numbers you were looking at. I tend to remember it as the former. So for me the bottom came 6 years after. The last cycle was ahistoric and the largest ever seen so our mileage may very.
Also if mortgages go back above historical averages, something like 8% on a 30 year fixed I’m guessing it’ll be time to buy.