Blom's latest utility work was a romantic office building, destined to the Gass company Kennemerland in Heemskerk, which he elabored together with his companion Hans van der Eijk. The building signified Blom's charge against the business-like, dispassionate architecture of company buildings. The "Piet Blom building" is surprising in many ways, Its round shape, castle-moat and turrets make the "castle" a true eye-catcher of Heemskerk. Everything in the building is round and oblique. There is no right angle in sight, no room is the same and there are places to explore and level differences. The building is radically changed in 2004. In line with the first designs from Blom, Beltman Architects gave the building considerably more volume an changed it from one office to housing and business units.