A single-space zone, also referred to as open space or open space, is an architectural solution that combines several functional functions in a single area, not divided by partitions. Most often it concerns the living area in residential buildings - where the living room, dining room and kitchen form one continuous area - but the principle of single-space is also applicable in offices, commercial spaces, cultural facilities and public buildings. The absence of physical divisions does not mean a lack of structure - a well-designed single-space zone is internally organized by a differentiation of levels, materials, lighting and furniture, which delimit individual areas of activity without resorting to walls and doors.
The popularity of single-space solutions in residential architecture is due to several interrelated factors. First of all, the open day zone visually expands the space - the absence of partitions makes even a relatively small area seem more spacious and bright. The free flow of natural light between the kitchen, dining room and living room improves comfort of use and reduces the need for artificial lighting during the day. Equally important is the issue of social integration - in the single-space day area, the person preparing the meal remains in visual and verbal contact with the rest of the household, which promotes bonding and spending time together. It is this aspect that makes open space in the living area the standard in modern housing construction, both in single-family houses, as well as in apartments in multi-family buildings.
Designing a single-space zone requires special precision and experience - this is one of the most difficult tasks in interior architecture and functional design. The apparent simplicity of the open plan hides a number of challenges that only become apparent in everyday use. The first is acoustics - the kitchen generates noise, smells and heat, which in the open space freely spread to the seating and dining area. The absence of walls also means the absence of natural sound barriers, which can be a nuisance when watching TV, working remotely or resting other household members. The solution is properly selected finishing materials with sound-absorbing properties, thoughtful arrangement of the kitchen island as a separating element and the use of efficient exhaust ventilation. In the case of individual project the architect has the opportunity to design a single-space zone taking into account all these nuances from the very beginning - adjusting the layout, proportions and selection of materials to the specific needs and lifestyle of the investor.
Technical requirements for ventilation in single-space zones are especially relevant due to the combination of the kitchen with the living space. Regulation of the Minister of Infrastructure on the technical conditions to be met by buildings specifies the minimum requirements for air exchange in kitchen and residential premises, however, for open spaces, it is crucial to design the ventilation system as a whole - taking into account the air flow between the zones and the effective elimination of kitchen odors. Insufficient ventilation in a single-space zone is one of the most frequently reported utility problems in modern apartments and houses.
The single-space zone also places special demands on heating and air conditioning. A large open space requires careful design of the heating system - underfloor heating works much better here than traditional radiators, as it evenly distributes heat over the entire surface without creating zones of differentiated temperature. A precise analysis of the heat balance of such a space is possible thanks to the technology BIM (Building Information Modeling), which allows you to simulate the heat flow, temperature distribution and efficiency of various heating systems even before the start of construction. For the investor, this means confidence that the chosen system will work as expected - without costly adjustments after the reception of the building.
It is worth noting that a single-space zone is not a universal solution and does not always meet the needs of all users. Families with young children, remote workers or seniors may prefer a more traditional layout with separate rooms, which provides more privacy, silence and the ability to carry out different activities simultaneously without interfering with each other. The trend of a return to closed kitchens and separated living rooms, seen in design after 2020, is partly a response to the experiences of working and remote learning in homes, where open space has proven to be a source of conflicts between household members. Living Space Research Institute Eurofound regularly publishes analyses on the quality of living space in Europe, indicating the growing importance of the possibility of separating a quiet work and rest area within the apartment.
An alternative to full monospaciousness is a hybrid solution - a partially open day zone with the possibility of separating individual areas with the help of sliding walls, large door sashes or movable fittings. This approach combines the advantages of an open plan with the flexibility of a closed layout and is enjoying increasing popularity among investors looking for a compromise between spaciousness and functionality. At adaptation of the finished project modifying the layout of the living area - for example, opening the kitchen to the living room or vice versa - is one of the most frequently made changes, however, requiring verification in terms of building design and ventilation regulations.
The role of the architect in the design of a single-space zone is to find the optimal balance between openness and functionality - one that responds to the specific lifestyle of the residents, and not to the current aesthetic trend. The best projects are those in which a single-space living area seems to be a natural consequence of the way a family lives every day: cooks, eats, rests and spends time together. Achieving this effect requires not only technical knowledge, but above all the ability to listen and a deep understanding of the needs of future users of the space.
