Study. Lilyfield, Sydney, New South Wales, Australia. Architecture by Danny Broe Architect. Interior design assisted by Toby Andrews. Photography by Karina Illovska.

Organizing and decluttering are all the rage these days. For that we can largely thank the present-day titan of tidiness,Marie Kondo, whose KonMari method has fueled several books, a Netflix series, and invigorated an entire industry devoted to helping people maintain control over their physical...