It's called a boom like breaking a sound barrier

HOUSING: DataQuick real estate news compiles the LA Times' home sales data, monthly and divided by zip code. House and condo prices in 91335 trend up, and the number of sales is up from Feb.
Sales of Single Family Homes...85, nearly double Feb.'s 48, which was down from 55 in Jan.
Median Price: Single Family Homes...$473,000 a steady increase from Feb.'s $450,000, a continued increase from Jan.'s $438,000
Price % Chg from Feb. '04...31.3% is swinging up from the previous month's 25%, down from Jan.'s 26.2 increase of '04%
Sales Count of Condos...23 steps up from Feb.'s 18, a dip from 25 in Jan.
Median Price: Condos...$315,000 removes previous gains of $345,000 in Feb. and Jan.'s $335,000
Price % Chg from Feb. '04...13% from a year ago trends down from the previous month of 32.1%, ticking up from the Jan.'s 31.4% increase from '04
Median Home Price per Sq. Ft...$351 about halves the Feb. increase of $345 over Jan.'s rate of $337
via the Times:

Although not on a par with the record-breaking pace of early 2004, the number of home sales across the board is "way above the norm," said John Karevoll, chief analyst at DataQuick Information Systems

Speaking of that, this:
'04
Feb.'s post
Jan.'s post