The feature, theme, or element that ties together a space or multiple spaces.
The golden thread (originally referred to as the “red thread” in Swedish and Nordic culture) is a concept or feature that exists in every part of something, binding it together and giving it value. It comes from the Greek myth of Theseus and the Minotaur, in which Theseus found his way out of the trap of the Minotaur’s labyrinth by following the red thread he was given by Ariadne.
In an interior, the idea of the red thread is manifest through the recurrence of materials, colors, or other artifacts in a design. While it’s certainly not possible or necessary to use a physical thread to tie together a space, the repetition of like elements can lead to a more unified design overall. These repeated core elements add strength and cohesion to a project that could be seen as disjointed (whether through spatial conditions or eclectic clashes of material) and can cue recognition of these elements from one room to another.
There are several ways in which a conceptual thread can be used to tie together a design
Color
Selecting a base color for each space (typically a neutral white) or introduces a subtle tone that functions as a background for the addition of furniture and other elements.
Material
Using consistent touch, weave, and placement of the various materials used in the space.
Detailing
Including details that are repeated in common design elements (door frames, counters), or that show how the connections of surfaces are resolved. This can occasionally be changed if an element needs emphasis.
Theme
Choosing an approach that aggregates from room to room. Often the art in a space is an element that can be used to support a theme. Teasing out themes and patterns in the selection and placement of art, and using similar mounting heights and framing types can bring consistency to a space.