A villa in old Żoliborz has undergone a metamorphosis! Kate&Co studio breathed new life into a pre-war house

Anastazja Gibas
21 of October '25

In Old Żoliborz, behind the gates of modernist villas lie stories that can still surprise. One such villa, dating from the 1930s, was the subject of a project by Katarzyna Szostakowska of the Kate & Co. studio. The architect turned 250 square meters of a pre-war house into a modern space - orderly, harmonious and full of light.

Przedwojenny dom na starym Żoliborzu projektu pracowni Kate&Co

Pre-war house in old Żoliborz designed by Kate&Co studio.

photo by Yassen Hristov

New life between the old walls

The house the designer faced was full of charm, but also restrictions typical of pre-war buildings. Narrow corridors, an enclosed kitchen, separate rooms - all of these required rethinking from scratch. Szostakowska decided to give the space a new rhythm. She opened up the functional layout, creating a common living area in which the kitchen, dining room and living room naturally intermingle. As a result, light, previously stopped by partition walls, now flows seamlessly from one room to another. The house has gained breath and a sense of freedom. This is not only a change of layout, but also of philosophy - from closed rooms a living space was created, where every meter has its meaning.

Przedwojenny dom na starym Żoliborzu projektu pracowni Kate&Co

Pre-war house in old Żoliborz designed by Kate&Co studio - view of living room combined with dining room

photo by Yassen Hristov

The first floor also underwent significant changes. A bedroom with a dressing room was created from two small rooms, and one spacious and functional bathroom was created from two small bathrooms. The proportions of the windows were preserved, which helped maintain the rhythm of the architecture while introducing modern comfort.

Niebieska kanapa stanowi akcent kolorystyczny wnętrza

A blue sofa is the color accent of the interior

Photo by Yassen Hristov

Where north meets south

Every project has a starting point. In this case, the inspiration came from the investors - a young couple who dreamed of an interior that was simple, but not cool and modern, but with character. From this meeting was born the idea of combining two worlds: Scandinavian restraint and Southern European warmth. Katarzyna Szostakowska treated these two aesthetic languages as conversation partners, not rivals. The result is an interior with a clear rhythm, in which light surfaces intertwine with natural wood, stone and metal. There are no accidental contrasts here. Everything is well thought out - from the proportions of the space to the subtle details. This is an interior that seeks not effect, but balance. One that allows history and modernity to coexist without clashing.

Akcenty błękitu, które stały się motywem przewodnim wnętrza, pojawiają się punktowo, nadając przestrzeni charakteru

Accents of blue, which have become the interior's leitmotif, appear in spots, giving the space character

Photo by Yassen Hristov

Technology in the background

The age of the building necessitated a major upgrade of the installations. The designer took this as an opportunity to introduce future solutions. A smart home system based on Gira's KNX technology is in place throughout the house to control lighting, heating and exterior shades. A heat pump was also introduced, as well as a bio-fireplace in the living room - environmentally friendly, smokeless and energy-efficient. As a result, the house has become fully energy self-sufficient, and modern technologies have been integrated into its structure with discretion. Nothing here disturbs the harmony of the interior - technology exists, but does not dominate.

W salonie znajduje się biokominek

In the living room there is a bio-fireplace

Photo: Yassen Hristov

A detail that builds the whole

What attracts attention in Katarzyna Szostakowska's designs is consistency. Here every detail has meaning and its own role in the story. In the dining room there is a BoConcept table and chairs, over which hangs a sculptural Bolia lamp. In the living room, the center of the composition is a bio-fireplace encased in 41zero42 tiles, on the sides of which Foglio sconces by Flos are symmetrically arranged.

Widok na łazienkę

View of the bathroom

Photo: Yassen Hristov

The theme of the interior became blue - a hue that introduces rhythm and a delicate color accent. It appears in the &Tradition hockers, GUBI Multi-Lite lamps and small decorative elements. It is a color that sets the tone and balance of the interior - it does not dominate, but organizes the space.

Motywem przewodnim wnętrza stał się błękit

Blue has become the leitmotif of the interior

Photo: Yassen Hristov

Kitchen - the heart of the house

In this design, the kitchen is not only a place for cooking, but also the center of family life. Open to the living room and dining room, it has become a natural meeting point. White cabinet fronts introduce a feeling of lightness, and the contrasting blue island adds rhythm to the whole composition. Its character is complemented by stylized retro appliances - a stove and hood by French brand LaCanche in "delft blue" with brass trim. 41zero42 tiles on the wall organize the space and refer to the artisanal tradition of the South.

Kuchnia to prawdziwe serce domu, zachwycające zarówno swoją funkcjonalnością, jak i estetyką

The kitchen is the true heart of the home, delighting in both its functionality and aesthetics

photo by Yassen Hristov

Bedrooms and bathrooms - the private part of the house

Upstairs, the rhythm slows down. The bedroom, with its NAP bed and custom-designed headrest, was designed with tranquility in mind. Gravity bedside lamps by GUBI, with a marble base, bring soft light and subtle elegance.

W domu znajduje się również garderoba ukryta za szklanymi drzwiami

The home also features a dressing room hidden behind a glass door

photo by Yassen Hristov

The bathrooms, kept in a southern aesthetic, are covered with WOW Design tiles, which build a uniform, calm surface. Light from Vistosi wall sconces from the Jube collection is reflected in the texture of the tiles, creating an effect of depth and subtle shine. These are spaces designed with the ritual of everyday life in mind - functional, but also full of atmosphere.

Wnętrze sypialni

Bedroom interior

Photo by Yassen Hristov

Respect for the past, open to the future

The metamorphosis of the Żoliborz house is not just the story of a successful renovation. It is a story about a relationship with a place - about how one can listen to architecture without imposing too much on it. Katarzyna Szostakowska preserved the building's character while opening it up to modernity. Every detail, from the coffee table to the Gira electrical fixtures in the shade of umbra, creates a cohesive whole, where history and modernity mingle effortlessly. Thanks to this realization, the former Żoliborz house has regained its voice - not as a memento of the past, but as a space ready for new life.

Anastazja Gibas

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