To echo previous posts, buying is a decision to make when you're planning on staying for a MINIMUM of 5 years. I think you need to be willing to stay for 10 if need be, in case economic conditions dictate that.
In the short term, the lower-end of WS real estate may underperform other areas of the city that are similarly located in proximity to downtown due to the viaduct traffic mess. I would guess by the time things are done, that will recover back to normal.
When we moved here, my drive to Fremont rarely exceeded 25 minutes during peak commuting time. Now, it can easily be 45. That will dissuade some people from moving to WS.
However, from an affordability perspective, from 1993-2003, median housing prices averaged 4-5x the median family income in King County. Currently they are close to 5x median family income, but from 1993-2003, 30 year fixed mortgage rates fluctuated between 6 and 9%.
With current rates in the 3.75 - 4.5% range, the mortgage payment on that median home is going to be 20%-40% lower than it would have been 15-20 years ago, relative to median income.
Although prices may not be increasing rapidly anytime soon, any time you can buy an asset for 20-40% less (on a monthly payment basis) than it historically costs, you're making a good purchase.
So if you're ready to stay in the place for 5-10 years, then it's a great time to buy.