Giant parking garages for one, yes (which mostly go below ground). Also, many people who work in Seattle live in Seattle. Probably not a majority, but not a sma

Giant parking garages for one, yes (which mostly go below ground). Also, many people who work in Seattle live in Seattle. Probably not a majority, but not a small minority either. The rate at which new housing is being constructed in the downtown area (including Capitol Hill, SLU, etc.) is staggering[0]. Much of the job growth the city is experiencing has corresponding housing growth within walking distance to work. [0]: Which I view mostly as a good thing -- late last year they hit a saturation point that resulted in the first month-to-month decrease in rent for new leases; my hope is that this will alleviate some of the upward rent pressure on the lower end of the market and make the city livable for a broader range of incomes. Whether that will actually happen remains to be seen, but it's far more likely if rents for the new construction face downward pressure from inflated supply.