Vejledning om lovliggørelse af ulovligt byggeri – Danish Guide on Legalization of Illegal Construction
The Vejledning om lovliggørelse af ulovligt byggeri is an official guidance document issued by the Danish Transport, Construction and Housing Authority (Trafik-, Bygge- og Boligstyrelsen). Revised on January 31, 2019, this document forms part of the administrative provisions under § 1 - § 47 of the Danish building regulatory framework. It operates within the legal context of the Danish Building Act (Byggeloven) and the Building Regulations 2018 (BR18), providing the procedural basis for how municipal boards (kommunalbestyrelsen) and property owners must address structures erected in violation of current legislation.
The guidance defines the distinction between materiel ulovlighed (material illegality) and formel ulovlighed (formal illegality). It establishes the regulatory scope for all types of construction covered by the Building Act, including new builds and renovations. The document details specific administrative procedures, such as the application of BR18 § 10 and § 11 for documentation requirements, the role of spot checks under BR18 § 46, and the criteria for issuing occupancy permits under BR18 § 43. It also incorporates recent requirements regarding building climate impact assessments as defined in § 297 and § 298.
This reference document provides the criteria for choosing between legal and physical remediation. It outlines the specific obligations of property owners and the discretionary powers of municipal authorities when evaluating non-compliant building projects.
Definition of Illegal Construction
According to the Building Act, a construction project is considered illegal under three specific conditions:
- Failure to meet requirements: The building did not comply with the Building Act at the time of construction or failed to meet the conditions specified in a building permit.
- Lack of authorization: The project was carried out without the necessary building permit or a granted dispensation.
- Invalid permits: The building permit or dispensation previously granted is deemed invalid.
A project may be categorized as either materially or formally illegal. Materiel ulovlighed refers to physical non-compliance with technical or zoning regulations. Formel ulovlighed occurs when the administrative requirement for a permit or dispensation has been bypassed.
Legal and Physical Legalization
There are three primary methods to bring an illegal structure into compliance:
- Retlig lovliggørelse (Legal legalization): The illegal condition is made compliant through a retrospective permit or dispensation, requiring no physical changes to the building.
- Fysisk lovliggørelse (Physical legalization): The illegal condition is terminated by physically altering the building through reconstruction or demolition to meet the law.
- Combination: A mix of both retrospective permits and physical alterations.
Under the principle of proportionality, retlig lovliggørelse should always be preferred over physical intervention if the condition could have been legally permitted at the time of construction.
Owner Obligations and Municipal Enforcement
The duty to legalize an illegal condition rests with the current owner of the property (den til enhver tid værende ejer), as established in Byggelovens § 17, stk. 1. This is an objective liability tied to the property itself.
- Personal liability: Orders for legalization must be directed to the specific owner. If the property is sold, the order must be reissued to the new owner.
- User liability: If the illegal condition involves the use of the property, the obligation to rectify the situation also extends to the user (brugeren).
- Municipal discretion: Municipalities must act upon becoming aware of illegalities, unless the matter is of insignificant importance (underordnet betydning).
Administrative Considerations and Climate Impact
Municipalities must weigh several factors when deciding on legalization, including the purpose of the law, the nature of the violation, and impacts on neighbors. For buildings exceeding climate impact thresholds, specific rules apply:
- Calculation errors: If a climate impact calculation is missing, it is treated as a documentation deficiency under § 297.
- Exceeding limit values: If the building exceeds the CO2 limit values defined in § 298, the municipal board must initiate legalization proceedings.
- Proportionality in climate cases: Authorities may consider if technical changes can reduce the overall 50-year climate impact to bring the building within limits.
Frequently Asked Questions
What is the difference between material and formal building illegality?
Material illegality means the building physically violates technical or zoning rules, whereas formal illegality means the building was constructed without the required administrative permit.
Is a new property owner responsible for illegal construction performed by a previous owner?
Yes, according to Byggelovens § 17, the duty to legalize an illegal condition rests with the current owner of the property, regardless of who caused the violation.
When can a municipality choose not to enforce legalization?
A municipality may refrain from demanding legalization if the violation is of insignificant importance (underordnet betydning) based on a concrete assessment of the Building Act's purpose.
What happens if an illegal building is selected for a spot check?
Under BR18 § 46, if a spot check reveals insufficient documentation or unauthorized deviations, the owner must submit missing materials or bring the building into compliance.
Must a building be demolished if it was built without a permit?
Not necessarily. If the structure could have been granted a permit at the time of construction, retlig lovliggørelse (legalization through a retrospective permit) is preferred over physical demolition.
What role do the police play in building legalization cases?
While the municipality handles the administrative legalization, only the police can issue fines for violations of the Building Act under § 564.
