Must an existing apartment building comply with current fire detection standards?
An existing apartment building remains, in principle, subject to the rules applicable at the time of its construction or last significant transformation. The Royal Decree of 7 July 1994 establishing basic standards for fire and explosion prevention applies fully to new constructions, but its application to existing buildings depends on the nature of the works undertaken. A co-owner or property manager cannot therefore be compelled, without grounds, to equip the entire building with a detection system compliant with current requirements if no significant transformation has taken place. This does not mean the building escapes all obligations: maintenance of existing equipment (fire extinguishers, emergency lighting, possible detection in common areas) remains due, and the emergency zone (hulpverleningszone) may, during an inspection, require corrective measures if a clear danger is identified.
What is the difference between requirements for new buildings and those for existing ones?
The difference lies in the triggering event of the obligation: new construction is fully subject to basic standards from the permit application, existing buildings are only subject to them for the transformed part. A building constructed before a standard came into force is not retroactively found at fault for what has not changed. However, as soon as an intervention affects common circulation areas, technical shafts, compartmentation or common electrical installation, the rules in force at the time of the works apply to that intervention. Concretely, replacing a collective boiler or redoing the electricity in common areas may be sufficient to bring current standards into play for that work package, without necessarily imposing a general upgrade of the entire building if the rest of the structure is not affected.
In which cases does a fire detection upgrade become mandatory?
An upgrade becomes mandatory in three main situations: a major renovation affecting the structure, compartmentation or evacuation routes, a change of use (for example offices converted into apartments, or a commercial ground floor reconverted), and an order from the emergency zone (hulpverleningszone) following an inspection revealing a danger to occupants. In these three cases, the property manager or project owner must apply the requirements in force at the time of the project, including for detection and fire alarm in common areas. A cosmetic renovation (painting, floor coverings, replacement of joinery without impact on evacuation) does not, however, entail any such obligation, since it modifies neither the structure nor the safety of occupants.
What is the role of the property manager in fire compliance of a condominium?
The property manager is responsible for managing common areas and, as such, for the compliance and maintenance of fire safety equipment located there: possible detection in circulation areas, emergency lighting, fire extinguishers, fire doors. They must have the periodic inspections required by NBN S 21-100-2 carried out when a detection installation exists, keep maintenance reports, and inform the general meeting of co-owners of any non-compliance identified. If major renovation works are planned, the property manager should consult a certified installer or prevention advisor before submitting the permit, in order to anticipate the requirements that will apply to these works. However, they do not have the power to impose a general upgrade on their own initiative: this decision falls to the general meeting, except in case of safety emergency.
How is an apartment building classified according to its height?
The Royal Decree of 7 July 1994 classifies buildings according to the height of the highest level relative to the average level of the vehicular roads surrounding the building: low-rise building (height less than or equal to 10 metres), mid-rise building (between 10 and 25 metres) and high-rise building (greater than 25 metres). This classification determines the level of requirements for compartmentation, evacuation and detection in common areas, both for new construction and for transformations subject to current standards. An apartment building classified as mid-rise or high-rise is subject to stricter requirements for detection and alarm in common circulation areas than a low-rise building, which must be verified as soon as a renovation or change of use project is planned.
| Building class | Height of highest level | Typical impact |
|---|---|---|
| Low-rise building | ≤ 10 m | Basic requirements, simple compartmentation |
| Mid-rise building | > 10 m and ≤ 25 m | Enhanced detection and alarm in common areas |
| High-rise building | > 25 m | Strictest requirements, coordination with emergency zone |
What are the steps to assess whether an upgrade is necessary?
The assessment begins by identifying the exact nature of the planned works and their impact on the structure, evacuation or common installations of the building. The property manager or project owner must then verify whether these works constitute a major renovation or change of use within the meaning of the regulations.
- 1.Qualify the project (light renovation, major renovation, change of use).
- 2.Consult the emergency zone (hulpverleningszone) or a prevention advisor for a preliminary opinion if the project affects fire safety.
- 3.Have a compliance note drawn up, if necessary, by a BOSEC-certified installer or specialized design office.
- 4.Integrate detection and alarm requirements into the urban planning permit file.
- 5.Plan periodic inspections according to NBN S 21-100-2 once the installation is installed or modified.
This approach avoids unpleasant surprises when submitting the permit and secures the property manager's liability vis-à-vis the co-owners.