Designer Lorenzo Castillo has combined two apartments in Oviedo, Spain, to create a single personal retreat. He shares the home with his partner, Alfonso, and their dog, Tana.

Color provides the central design language of the residence, setting the mood across the newly unified living spaces. Rather than treating the paired properties as separate units, the project frames them as one coherent domestic environment.

The home reflects Castillo's approach to decoration, in which atmosphere and visual character guide the arrangement of an interior. Architectural Digest's profile of the project identifies color as the defining element of the Oviedo residence.

For apartment owners and developers, the project underscores the design potential of consolidating neighbouring homes. A successful combination depends not only on creating more floor area, but on establishing a clear identity that makes the enlarged residence feel intentional.