Here's a chart from the California Association of Realtors with median home price and sales volume comparsions between 2006 and 2007.

	Median 2007	Median 2006	Price change	# Sales Change
Region
Central Valley	$330,500	$362,910	-8.90%	-30.60%
High Desert	$296,380	$330,380	-10.30%	-49.40%
Los Angeles	$589,150	$584,820	0.70%	-22.60%
Monterey	$731,190	$713,900	2.40%	-28.10%
Nor. Calif.	$381,850	$409,460	-6.70%	-10.50%
Nor. Wine Country	$589,050	$620,040	-5.00%	-23.10%
Orange County	$699,590	$709,000	-1.30%	-22.70%
Palm Springs/Lower Desert	$371,840	$369,700	0.60%	-27.30%
Riverside/S.B.	$381,390	$400,660	-4.80%	-41.60%
Sacramento	$342,730	$374,530	-8.50%	-25.90%
San Diego	$588,700	$601,760	-2.20%	-20.70%
San Francisco Bay	$805,400	$752,820	7.00%	-23.40%
San Luis Obispo	$570,770	$580,800	-1.70%	-14.50%
Santa Barbara County	$801,360	$752,260	6.50%	-16.80%
Santa Clara	$836,775	$775,000	8.00%	-22.70%
Ventura	$673,940	$685,960	-1.80%	-28.80%