where to go for antique/reclaimed/tchotchke hauls?

recently moved to the area from the east coast. the city i previously lived in had a phenomenal second-hand warehouse* of antique furniture, lighting, kitchen items, and building materials (things like hardwood floors from renos, tile, fireplaces, radiators, etc.) i'm dying to fill that void, but part of me thinks that place is a unicorn? *when i say warehouse, i mean literally a 250,000 square foot warehouse.

is there anywhere in the seattle metro area that is similar?