Career
Van der Sluys designed textile, made designs for carpets, wallpaper and chairs and ceramic decorations on pottery for the first Steenwijker Art Pottery Factory. From 1901 to 1904 he designed Belgian and French Art Nouveau, Arts & Crafts copper work and designs for batiks for the Hague art dealers. Cornelis van der Sluys was the son of Willem van der Sluys (agent) and Anna Constandse.
After training as a decorative painter, he was educated at the Academy of Visual Arts in The Hague from 1894 to 1899 where he was a pupil of amongst others under Johan Thorn Prikker and Eduard Willem Frederik Kerling.
He worked in The Hague from 1901 to 1904 as chief draftsman at art dealers arts & crafts. In 1905 to 1906 he made a tour of Europe, notably in Belgium and England then returned to The Hague, where he kept worked from 1906 to 1944.
Together with Hawaiian Territory. Coolwijk (business manager) they founded the company "Corn. Van der Sluys," located in a house with several showrooms on the Avenue of New East Indies.
Later the firm moved to the Lange Houtstraat.
In 1916, the company is dissolved. In 1916-1918 he established the Office of Interior Architecture and Furniture in the Old Molstraat with Van der Sluys as director From 1918 to 1944 he had his office and house at Noordeinde 162 in The Hague.