The final sign that you're in a really hot market is how the top end fares. And the top end in Alexandria, Arlington and Fairfax is faring very well. 
Would you believe we have less than a months' supply for homes in the $700,000-$800,000 range (0.99 months' supply)? That means if no more homes come on the market and buyers keep snatching up houses at that rate, all the houses in that price range could be sold in less than 30 days.
It's a telling story across the board if you look at the table below. Luxury homes are selling at just as fast a rate as their lower-priced counterparts.
Lots more is going on in today's D.C. area market.  Weichert Realtors in McLean, Virginia is offering a Market Update Seminar, Saturday, April 27, 10 a.m. Call (703) 821-2300 for more information. We're located at 6257 Old Dominion Drive, McLean VA. See you there!
Luxury homes are also in a tight market