As Oy Kupittaankatu 57, Turku

As Oy Kupittaankatu 57 is a Finnish residential housing cooperative (asunto-osakeyhtiö) located in Turku, Finland. The property is managed by Retta Isännöinti, part of Realia Group, which provides full-service property management including financial, technical, and administrative services. As a housing company, it represents the collective ownership structure common in Finnish residential real estate.