Maison Coilliot, Art Nouveau house in Lille, France

Maison Coilliot is a four-story Art Nouveau house at 14 rue de Fleurus in Lille, built of cut stone, brick, lava, wrought iron and ceramic. Its street facade is framed by green enameled lava tiles and topped by a wooden gable roof; a band of tiles reads "CERAMIQUE" and "COILLIOT". A recessed loggia with wooden railings and iron columns sits above the shopfront.

Architect Hector Guimard designed this residence in 1900 for Louis Coilliot, a ceramic manufacturer who operated his business from the ground floor. The building was completed during the height of the Art Nouveau movement, when architectural innovation transformed urban living spaces.

The building demonstrates how a ceramic maker displayed his craft on his own home, turning the facade into a working showcase for his products. The glazed lava tiles themselves were among the finest materials he manufactured and sold.

The two facades can be easily viewed from public spaces, allowing you to observe the details of the tilework and ironwork from multiple angles without restriction. Visiting during daylight hours is recommended to fully appreciate the color and texture of the materials, particularly the green enameled surfaces.

Louis Coilliot's plot covered 744 m² and reached back to rue Fabricy, where a block of flats at 13–17 rue Fabricy was built in reinforced concrete by Hennebique's firm. Its glazed-brick elevation carries ceramic cartouches, and inside, a neo-Renaissance Longwy ceramic fireplace bears the salamander of François I. The flats and rear workshops were listed in May 2009 and fully restored in 2011.