Owner-occupier stock is scarce by policy and culture: most of Zurich rents, and large apartments convert slowly. Seefeld and the lake shore are the trophy book; Wiedikon, Aussersihl and Oerlikon are the professional book where bidding decides the price.
Stockwerkeigentum dominates new supply, with renewal-fund health as the core diligence — the Swiss cousin of the service-charge file. Minergie certification moves both price and rentability.