For what it’s worth, CV is an upper-middle class professional area. Such areas tend to have more transient residents and greater turnover than average, due in large part to the nature of the jobs these people have. I have been watching the 92130 MLS for almost 10 years now. I don’t think it’s necessarily any sort of reliable gauge of the overall SD market, but once you’ve done it for a while it’s interesting by itself. SFR inventory was less than 20 (!) units at one point but climbed above 200 last year. Like SD as a whole, total inventory then declined although months of inventory stayed fairly constant (as sales declined). Now inventory appears to be building again.