Bygningsreglementets vejledning om boligindretning – Danish Housing Design Guidance
The Bygningsreglementets vejledning om boligindretning is the official secondary edition, published in September 2022 by the Danish Authority of Social Services and Housing (Trafik-, Bygge- og Boligstyrelsen). This document serves as the regulatory guidance for the Danish Building Regulations 2018 (BR18), specifically addressing Chapter 9, § 196 to § 241. It outlines the framework for planning residential units that meet quality standards for multi-story housing, terraced houses, and semi-detached houses. It does not apply to detached single-family dwellings.
The guidance shifts focus from prescriptive measurements to performance-based requirements (funktionskrav). It establishes the necessary considerations for developers and consultants, such as architects and engineers, regarding the diversity of residents and the functional organization of the home. The content is structured into three primary divisions: residents' needs, general planning principles (including building context, compact construction, and technical installations), and specific residential activities ranging from cooking and dining to acoustic privacy and daylighting.
By referencing established standards such as SBi-anvisning 249 for accessibility and SBi-anvisning 272 for general building regulations, this document provides the interpretive basis for fulfilling the functional objectives of BR18 in modern residential construction.
Housing Flexibility and Resident Categories
The document defines the relationship between the physical structure and the residents' ability to create a home. It categorizes adaptable housing into three distinct types to accommodate changing household compositions and physical needs over time.
- Den generelle bolig (General Housing): Units where rooms are dimensioned for multiple functions without structural changes, ensuring static walls do not block access to essential services.
- Den fleksible bolig (Flexible Housing): Units designed for internal reorganization through movable walls, double doors, or modular furniture systems.
- Den elastiske bolig (Elastic Housing): Units that can expand or contract in area by incorporating or renting out adjacent rooms (e.g., guest rooms or teenage annexes).
Daylight and Atmospheric Requirements
Daylight is regulated as a critical factor for health and comfort. The guidance specifies how window placement, facade thickness, and neighboring structures influence internal light levels.
- Himmelgrænseplan (Sky Visibility Plane): A sketching tool used to define the boundary between areas receiving direct sky light and those receiving only reflected light, calculated from the top of neighboring buildings through the window opening.
- 10 pct.-reglen: A reference to the rule requiring glass area to be corrected based on factors that reduce light access, such as deep facades or external shading.
- Orientation: Specific considerations for north/south versus east/west orientations to balance sunlight variation and prevent overheating.
Acoustic and Technical Planning
Acoustic integrity is addressed through insulation requirements between dwelling units and internal room layout strategies. While internal sound insulation between rooms in the same unit is not legally mandated, the document advises on the placement of sensitive zones like bedrooms.
- Lydklasse C: The standard for acoustic conditions where up to 20% of residents may still perceive noise conditions as poor despite compliance.
- Trinlydniveau (Impact Sound): Requirements for floor constructions to limit noise transmission between stories, with specific leavening for bathroom floors.
- Technical Installations: Guidance on grouping ventilation and drainage to minimize floor area loss and maintain layout flexibility.
Functional Activity Zones
The document provides detailed planning parameters for specific activities within the home, focusing on practical workflows and spatial efficiency.
- Kitchen Workflows: Optimization of the distance between the sink, stove, and refrigerator, and the requirement for sufficient workspace on both sides of cooking surfaces.
- Entrance Zones: The function of the entrance as a transition between public and private spheres, requiring space for storage of outerwear and footwear.
- Outdoor Spaces: Principles for balconies and terraces, including how external elements like franske altaner (French balconies) or deep balconies affect internal light and facade composition.
Frequently Asked Questions
Does this guidance apply to detached single-family houses?
No, the document specifically states it only covers multi-story housing (etageboliger), terraced houses (rækkehuse), and semi-detached houses (kædehuse).
What is the 'himmelgrænseplan' used for?
It is a planning tool to calculate how much daylight enters a room by drawing a line from the top of the neighboring building through the window head to determine the distribution of direct sky light.
What are the three categories of adaptable housing mentioned?
The guidance identifies the general housing (den generelle bolig), the flexible housing (den fleksible bolig), and the elastic housing (den elastiske bolig).
Are there specific sound insulation requirements inside a single dwelling?
No, there are no legal requirements for internal sound insulation between rooms in the same dwelling, though strategic placement of bedrooms away from noise sources is recommended.
What is Lydklasse C?
Lydklasse C is the acoustic classification defined in DS490 that typically applies to residential buildings meeting the minimum requirements of the building regulations.
How should kitchen workspaces be planned according to the guide?
Workspaces should be placed with appropriate distances between the sink, stove, and fridge, with landing space on both sides of the cooktop for preparation and serving.
