Original plasterwork, five-metre-high ceilings and a century-old timber staircase provide the framework for the renovation of a 1920s apartment in Kypseli, where new materials, bespoke elements and contemporary technology coexist with the building’s eclectic character.

The Upper House in Athens by A&O Architects and Saint of Athens occupies the first floor of a 1920s building in Kypseli. The 220m² apartment retains characteristics of the eclectic domestic architecture that shaped parts of Athens during the early decades of the 20th century, including ceilings reaching five metres in height, intricate plaster decoration and an unusually generous spatial organization.

Originally built for the family of a Greek industrialist, the residence was reorganized for contemporary use without suppressing these existing qualities. The renovation preserves significant architectural elements while introducing new functions, furniture, finishes and technical systems.

 

 

Preserving the original spatial character

The existing plan provided a sequence of large rooms connected through generous openings, allowing circulation to move easily across the apartment.

Rather than replacing this organization with a radically different layout, the intervention works with the proportions and relationships already present. Two former reception rooms continue to function as living spaces, while a new dining room, principal bedroom with en-suite bathroom, guest bedroom and powder room are incorporated into the domestic programme.

A library, kitchen and pantry complete the arrangement. The functions are distinct, but the existing circulation allows them to remain connected as part of a continuous residential sequence.

At the centre of this relationship between old and new stands the original timber staircase. Carefully preserved, it remains one of the most recognizable elements of the apartment and makes the age of the building immediately legible.

 

Existing ornament as part of the new interior

The original plasterwork is treated as an active architectural layer rather than a decorative remnant.

Ceiling mouldings and ornamental details are retained against a restrained palette, allowing their relief and scale to remain visible. The height of the rooms reinforces their presence and gives the newly introduced furniture and lighting a different scale from that of a conventional contemporary apartment.

The intervention therefore does not attempt to neutralize the eclectic character of the residence. Instead, contemporary additions are inserted within the existing setting, producing deliberate contrasts between historic ornament, modern furniture and new material surfaces.

 

 

Bespoke elements and individual rooms

Custom-made elements play an important role throughout the apartment. A specially designed wardrobe, wall panelling and Japanese wallpaper introduce distinct identities to individual rooms without disconnecting them from the overall composition.

The new elements operate at different scales. Some become part of the architectural surfaces, while others appear as individual pieces of furniture or joinery.

Designer furniture, lighting, contemporary ceiling fans, artworks and objects collected by the occupants are combined with the existing architecture. Their arrangement gives each room a distinct character while preserving the sense that the apartment has accumulated different layers over time.

Rather than pursuing uniformity, the project allows variations in colour, material and furnishing from one room to another.

 

Timber flooring and Greek marble

The material palette connects the different areas while maintaining the contrast between the restored shell and the contemporary intervention.

Chevron timber flooring extends through the principal rooms and establishes a continuous geometric background. Greek marble is introduced alongside it in selected surfaces, particularly in the bathrooms and other areas where a more mineral finish is required.

Timber also appears in the original staircase and in new custom-made elements, allowing historic and contemporary components to share a common material reference without being visually identical.

The combination of timber, marble, painted surfaces, wallpaper and existing plaster decoration creates an interior defined by different textures rather than by a single uniform finish.

 

 

Contemporary systems within a historic apartment

The renovation also incorporates current domestic technology into the historic shell.

Internet of Things systems and contemporary heating and cooling equipment improve the everyday operation of the apartment while remaining visually secondary to the architectural character of the rooms. The technical upgrade is therefore integrated without turning the residence into an overtly technological environment.

This relationship between infrastructure and preservation is central to the project. Contemporary comfort is introduced within an existing spatial framework rather than used as a reason to erase it.

 

A contemporary layer within a 1920s interior

The Upper House is ultimately organized around the coexistence of different periods.

The original proportions, staircase and plaster decoration preserve the architectural identity of the 1920s residence. New joinery, wallpaper, furniture, lighting and technical systems introduce another layer corresponding to present-day domestic life.

A&O Architects and Saint of Athens therefore approach the renovation not as a reconstruction of a historical interior, but as an addition to its ongoing history. The existing building remains clearly visible while contemporary interventions establish a new domestic environment around it.

 

The project was first published in print in Apartments 2025, an annual edition by ek Architectural Publications.