You’re right that the inventory level will jump between now until March, but the market isn’t completely dead.
According to Sandicor (MLS), there are 18,922 SFRs and condos on the market right now. Inventory typically does dip going toward the end of the year, but there were predictions on this board of 30,000 listings this fall – it didn’t happen.
There have been about 15,000 sales of SFRs and condos in the past 6 months, and there are 4600 in escrow right now – somebody’s buying.
If you want to see a dead market, check out the Phoenix area – with a similar population as San Diego County, they have an inventory iof 53,000 homes on the market.