Whether a residential building needs emergency lighting is decided by national building law, not by the European standards. In Germany, ordinary apartment buildings generally do not require safety lighting, even in the stairwell; exceptions include high-rise buildings above 22 m, windowless internal stairwells in buildings over 13 m, large enclosed car parks and buildings whose permit or fire safety strategy requires it. Other countries set their own thresholds, and voluntary emergency lighting is worthwhile in windowless stairwells, basements and underground car parks.
Who decides whether a residential building needs emergency lighting?
The European standards EN 1838 and EN 50172 describe how emergency escape lighting must perform and be installed and tested. They do not say which buildings must have it. That decision is made nationally, mainly through building regulations and, for workplaces, occupational safety law.
For residential buildings, workplace law rarely applies because nobody is employed there. What remains is building law: height, building class, number of dwellings, layout of the stairs and any special use. A country-by-country overview is available in Emergency lighting rules in Europe; the general triggers are covered in When is emergency lighting required?.
This article provides an overview and is not legal advice. What is binding is the building law of your country or region, the building permit and, where one exists, the fire safety strategy for the building.
Example Germany: when is it required in apartment buildings?
In Germany, the building codes of the federal states, based on the Model Building Code (MBO), do not require safety lighting – lighting that switches on automatically from its own energy source in a mains failure – for ordinary residential buildings. Usually it is only required that stairwells and corridors can be lit, for example by normal stair lighting with switches or motion sensors. The main exceptions, based on the model regulations, which the states have partly adapted:
| Situation | Typical basis (model rules) | Usual requirement |
|---|---|---|
| High-rise: floor of a habitable room more than 22 m above ground | Model High-Rise Guideline (MHHR) | safety lighting on escape routes, including stairwells and required corridors |
| Required internal stairwell without windows, building over 13 m high | Section 35 MBO or state building code | safety lighting in the stairwell |
| Large enclosed car park (more than 1,000 m² usable area) | Model Garage Ordinance (MGarVO) or state law | safety lighting and marked escape routes |
| Special use, e.g. student residence, assisted-living group, holiday letting with more than 12 guest beds | special building rules, individual permit | as set out in the permit and fire safety strategy |
| Commercial unit in the building, e.g. shop, surgery or restaurant | workplace law, possibly special building rules | for that unit, based on the risk assessment |
| Condition in the building permit or fire safety strategy | individual case | as specified there |
Building height in the German sense is measured from ground level to the floor of the highest storey containing a habitable room, not to the ridge. A five-storey building may therefore fall just below or just above 13 m.
How do other European countries approach it?
Many countries follow a similar logic: no general requirement for small residential buildings, increasing requirements with height, number of occupants and the absence of natural light.
There are differences in emphasis. In the UK, for example, guidance for purpose-built blocks of flats generally expects emergency escape lighting in common corridors and stairways, particularly where there is no adequate natural or borrowed light. Other countries tie requirements more strictly to height categories in their national building codes.
When does voluntary emergency lighting make sense?
Even where it is not required, emergency lighting can make a real difference to safety in a residential building. Typical cases:
- Windowless or internal stairwells, which are completely dark during a power cut even in daytime.
- Elderly residents or people with reduced mobility, for whom a dark staircase is a serious fall risk.
- Long access corridors in buildings with many flats per floor.
- Underground car parks, basements and bike stores, which have no natural light at all.
- Fire combined with a power failure: smoke and darkness together make orientation very difficult, and the main escape route in a residential building almost always runs through the stairwell.
Who is responsible: owner, owners' association or managing agent?
Stairwells, corridors, basements and car parks are usually common parts of the building. Responsibility therefore lies with the owner of a rented building or, in owner-occupied buildings, with the owners' association – in Germany the Wohnungseigentümergemeinschaft (WEG) – usually acting through a managing agent.
- Where emergency lighting is required, the owner or association must arrange for installation, testing and maintenance. The managing agent typically organises this and keeps the test records.
- Where it is installed voluntarily, owners' associations usually need a formal decision. In Germany this is generally a resolution of the owners' meeting on a structural alteration under Section 20 of the Condominium Act (WEG).
- In all cases, a general duty of care applies: stairwells and entrances must be safe to use and adequately lit, which mainly concerns the normal stair lighting.
What is the typical solution for a stairwell?
In residential buildings, self-contained luminaires are the usual choice: each luminaire has its own battery and is connected to the existing supply. No battery room and no fire-resistant wiring are needed, which makes retrofitting existing buildings much easier. Central battery systems are mostly found in high-rise blocks and large estates, see Self-contained vs central battery.
A typical stairwell layout:
- one luminaire per landing or floor, so that every step receives direct light
- one luminaire at the main entrance and at exits to the basement, courtyard or car park
- in car parks and long basement corridors, exit signs or exit sign luminaires to ISO 7010 at exits and changes of direction
- non-maintained operation, switching on only in a mains failure
Where emergency lighting is required, design follows EN 1838 and installation and testing follow EN 50172 plus national supplements. EN 1838 requires luminaires near stairs to be positioned so that each tread receives direct light. Compact ceiling or recessed luminaires with a wide optic, such as the NOTLUX compact emergency light with its 140° optic, cover landings and flights well and are easy to retrofit.
How much maintenance is involved?
Required emergency lighting must be tested regularly: under EN 50172, a monthly function test and an annual test over the full rated duration, each recorded in a logbook. Voluntary installations are not legally subject to testing, but the same intervals make sense because batteries age. Details are in Emergency lighting testing intervals.
For managing agents, the monthly walk-round is often the most tedious part. Self-testing luminaires to EN 62034 carry out the tests automatically and report faults via a status LED or an app, see Self-testing emergency lights. With NOTLUX, results are recorded in a digital logbook via the app; with the maintenance contract NOTLUX takes care of the annual inspection, replacement of all batteries in year 5 to 6 and repairs – the easiest option for managing agents.
Frequently asked questions
Do stairwells in blocks of flats need emergency lighting?
It depends on the country. In Germany, ordinary apartment buildings generally do not need safety lighting in the stairwell; exceptions include high-rise buildings, windowless internal stairwells in buildings over 13 m and buildings with a corresponding permit condition. In the UK, guidance for purpose-built blocks of flats generally expects emergency lighting in common escape routes.
At what height does a residential building need emergency lighting in Germany?
A building is a high-rise when the floor of at least one habitable room is more than 22 m above ground; the model high-rise guideline then requires safety lighting. For windowless required stairwells, the Model Building Code requires it from a building height of more than 13 m. The binding rules are those of the relevant federal state.
Does an underground car park under a residential building need emergency lighting?
Often yes if it is large. In Germany, enclosed car parks with more than 1,000 m² usable area generally require safety lighting under the model garage ordinance, while smaller car parks usually do not, though escape routes must be marked. Other countries have their own thresholds.
Can an owners' association install emergency lighting voluntarily?
Yes. Because stairwells and basements are usually common parts, the owners decide collectively – in Germany through a resolution of the owners' meeting. The managing agent prepares the decision and then organises installation and maintenance.
Do voluntarily installed emergency lights have to be tested?
A legal testing duty applies only to required installations. Even so, voluntary luminaires should be tested monthly and annually, because an aged battery can fail when it is needed. Self-testing luminaires greatly reduce the effort.
Emergency lighting without worries.
Luminaires, installation and maintenance from a single source – every inspection documented digitally in our app. We start with a free on-site survey and standard-compliant design.