Gelbes Haus, Traditional farmhouse in Flims, Switzerland.

Gelbes Haus is a former farmhouse on the Hauptstrasse in the Flims Dorf district of Flims, Graubünden, rebuilt by Valerio Olgiati in a conversion completed in 1999. The building was fully gutted, its entrance moved from the street to the east side, and it is now painted entirely white, with a roof of white-painted slate slabs. Nearly square, deeply recessed windows on three facades make it read as a heavy monolith; a natural stone wall in the lower part belongs to the oldest building fabric, and a column running through the intermediate floors divides each storey into four.

The building began as a farmhouse on the Hauptstrasse in Flims Dorf, its walls plastered and painted yellow, which gave it its name. In 1999 Valerio Olgiati completed a conversion that gutted the interior, moved the entrance to the east side and covered the roof with white-painted slate. The transfer to the municipality of Flims was tied to Rudolf Olgiati's condition that the house be painted entirely white.

The name Gelbes Haus comes from the yellow paint that covered the plastered farmhouse before its renovation. Since 1999 the building has been run by the association «Das Gelbe Haus», which organises exhibitions and conferences on alpine architecture; the house received the Hasen in Gold in 1999, a Graubünden award for good buildings in 2001 and a Neues Bauen in den Alpen distinction in 2006.

Gelbes Haus stands on the Hauptstrasse in the Flims Dorf district, not on Via Nova. The 1999 conversion moved the entrance to the east side, so approach from there. Since 2023 the surrounding ground has been white-tinted concrete level with the building, forming a continuous surface around it.

In 2023 Valerio Olgiati reshaped the ground around the house with white-tinted concrete, so the building now merges with the surface it stands on. The house received the Hasen in Gold in 1999, a Graubünden award for good buildings in 2001 and a Neues Bauen in den Alpen distinction in 2006.