An owner-customized Olson Kundig condo in Seattle's South Lake Union, listed at $3M.
There's a useful tell in how Tom Kundig designed the Art Stable building: he set the shell — the oxidized exterior, the warehouse doors, the rooftop davit crane built to hoist art and furniture into the upper units — and then left each individual condo for its original owner to customize. That's an architectural philosophy applied to a multi-unit building. The infrastructure carries the brand; the inhabitants carry the variation. It's the opposite of the contemporary luxury condo formula, where every unit is identical and the building has no soul beyond the lobby. Worth studying if you're a developer.