My target comp here in chicago is $250,000 for the level below senior software engineer and average home price here is $303,559 [0].
Pay is usually max(COL, local market rate). You don't need a super high COL if the local market is very competitive, but COL can raise the pay because you still need to convince people to move to your location and most people won't do that if it has an abnormally higher cost of living without a corresponding pay increase.
The reason house prices are high in Seattle is because geography limits how well they can sprawl to build new houses and lots of people don't like higher density housing.
[0]: https://www.zillow.com/chicago-il/home-values/