About us

Openplan Design is a trading name for Ashlar Mason Ltd (Company Number 03094951), a manufacturer and supplier of natural stone and engineered surfaces for architectural application to its trade and public clients since 1995. In 2012, we expanded to luxury interiors (kitchens, bathrooms, bedrooms, sitting rooms and furniture) in addition to natural stone.

Openplan Design’s state-of-the-art production facility, with its large, ethically sourced selection of stone from around the world, is showcased in our London showroom.

Our kitchen, bathroom and interiors studio is operated by an experienced team of designers and craftsmen. Creative in approach and solutions led, we create bespoke spaces with a fusion of textures, materials and colours. Kitchens are from top German, Dutch, Italian and British companies such as Beckermann Küchen, Zeyko Küchen, Keller Kitchens and Prentice.

Openplan Design offers Subzero & Wolf, Miele, Siemens, Neff, Bosch, BORA, Faber, AirUno and berbel kitchen appliances. Bathroom components include Villeroy & Boch, Saneux and Tavistock. Our natural and synthetic surfaces, bathroom ceramics, steel, glass and brassware are best in class. Each item is carefully sourced for its high-performance and aesthetic qualities.

Please read our terms and conditions here

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