Modest housing at that, not the "luxury" apartments that are springing up everywhere.
This reminds me of Berlin where rent control is being proposed. For reference the average rent prices there are 7€/m² and rent control will limit it to 5€ per m² for buildings that are older than 50 years (not an exact number).
How do you expect to ever profitably build something for 5€/m²? It's impossible and therefore won't happen. New buildings will probably start at 10-12€/m² and go down once they are 20 years old.