A spare key is a deceptively ordinary object.
Landlords keep one for perfectly sensible reasons. Pipes burst, alarms go off, and emergencies rarely wait for everyone to compare calendars.
But a key creates physical access, not permission. It can open the door. It does not, by itself, give anyone the right to cross it.
That distinction sat at the centre of a 2018 judgment from Luxembourg District Court.
The case concerned a woman living with her children in rented accommodation. Following a dispute, the landlord entered the apartment without her permission, changed the entrance lock, and did not give her a new key.
On a later evening, he knocked on the door of the room she occupied with her children and entered without waiting for her consent.
The court convicted him of offences under Articles 439 and 442 of the Criminal Code. In doing so, it explained that a home can be any permanent or temporary dwelling where a person is entitled to consider themselves at home, regardless of the legal basis on which they occupy it.
The wider case involved forced entry, threats, and an assault, so it was far removed from an ordinary disagreement about a boiler inspection.
Its central lesson is nevertheless simple: owning a property does not make the tenant's home permanently available to you. That remains true when the tenant rents only one room.
So, can your landlord enter your home without permission?
Only in narrow circumstances, and convenience is not one of them.
A landlord may need to inspect the property, organise repairs, or show it to a prospective buyer. A tenant cannot reject every reasonable request for access.
But except in an absolute emergency, the visit should be arranged beforehand.
Luxembourg's Ministry of Housing and Spatial Planning says that a landlord may keep a duplicate key, preferably with this made clear in the lease. Its use, however, is strictly limited to an "absolute emergency".
The Ministry gives the examples of a fire, flooding, or the need to help someone in danger.
If the tenant is away or cannot be reached, the landlord may enter to protect a person or prevent serious damage from spreading. They must inform the tenant as soon as possible afterwards.
The legal principle extends beyond the spare key. Article 1719 of the Civil Code requires the landlord to ensure the tenant's "peaceful enjoyment" of the property. The Luxembourg Constitution protects private life and states that the home is inviolable.
A tenancy therefore divides control from ownership. The landlord still owns the walls, floors, and troublesome boiler. The tenant controls the home within them, subject to reasonable access for legitimate purposes.
That distinction matters because the relationship is rarely one of equal power. A tenant may worry that objecting will sour relations, threaten the return of a deposit, or cause trouble when the lease is renewed.
An insistent message can feel less like a request than an instruction. But a tenant's reluctance to argue should not be mistaken for agreement.
A landlord who writes "I will enter tomorrow at 10am" has communicated their plans. They have not necessarily made an appointment.
Luxembourg's official guidance does not create a universal 24-hour or 48-hour notice period for every visit. A lease may contain more specific arrangements, but non-urgent access should be agreed beforehand.
The tenant should receive sufficient warning and have a reasonable opportunity to suggest another time.
This does not allow the tenant to keep the door closed indefinitely. The Ministry says that tenants must allow the landlord to check the condition of the property or determine whether repairs are needed.
Refusing without a valid reason may lead to a claim for damages.
The landlord may also arrange visits for prospective buyers, provided that the tenant is warned sufficiently far in advance. The Ministry recommends that both sides agree on the days and times.
Even an agreed visit has boundaries. Letting an electrician examine a faulty socket does not authorise the landlord to open cupboards, photograph personal belongings, or give themselves an unscheduled tour of the bedroom.
In most cases, the solution is a short written exchange confirming why access is needed, who will attend, and when. The landlord gets the access they reasonably require; the tenant retains control of their home.
Nobody needs to turn a boiler check into a constitutional crisis.
Some repairs cannot wait. If a pipe is sending water through the ceiling, the landlord does not have to stand outside composing increasingly polite messages while the flat below fills up.
But a repair can be urgent without justifying immediate, unannounced entry. There may still be time to contact the tenant and arrange access. The Ministry's absolute-emergency exception is for situations in which waiting would endanger someone or allow serious damage to spread.
Tenants have responsibilities too. If they discover mould, water damage, or another defect, they should tell the landlord promptly. According to the Ministry, a tenant whose inaction allows the damage to worsen may be responsible for the additional loss.
Article 1724 of the Civil Code requires tenants to tolerate urgent repairs that cannot wait until the lease ends. If the work lasts more than 40 days, the rent must be reduced in proportion to the length of the disruption and the part of the home the tenant cannot use.
If the work makes the part needed by the tenant and their family uninhabitable, the tenant may seek to end the lease.
The law does not give tenants a veto over necessary work. It requires that the work be carried out without treating their privacy as an inconvenience.
The 2018 judgment does not mean that every unannounced visit is a criminal offence. The precise facts matter.
Article 439 of the Criminal Code concerns entry into another person's inhabited home against their will by specified means, including threats, violence, breaking in, climbing in, or false keys. Article 442 concerns entering without the owner's or tenant's consent and being found there at night.
Both offences can carry imprisonment and a fine.
An unauthorised daytime visit made with a genuine spare key does not automatically meet either definition. It may still breach the tenant's right to peaceful enjoyment, but a civil wrong or breach of the lease is not necessarily a criminal offence.
The time of entry, the way access was gained, whether consent had been refused, and what happened inside the home may all be relevant. A tenant's role is to record those facts accurately.
Deciding which offence, if any, applies is a matter for the authorities.
Unless somebody is inside the home or you feel unsafe, begin by establishing what happened. Ask the landlord in writing who entered, when, why, and how. Ask whether anything was photographed, moved, or removed.
Save messages and photographs, and make a note of the dates.
If there was no emergency and you had not agreed to the visit, state in writing that future access must be arranged with you beforehand. If an inspection or repair is genuinely needed, offer reasonable dates.
This draws a clear boundary without giving the impression that necessary access is being obstructed.
If someone is inside your home and you feel at risk, contact the police. If you believe an offence has already taken place, you can file a complaint and provide the evidence you have gathered.
Civil disputes arising from a residential lease can be brought before the justice of the peace for the area in which the property is located. According to the courts' official guidance, a lawyer is not compulsory in residential tenancy proceedings.
The Ministry's housing legal service, the state's free legal-information service, Mieterschutz Lëtzebuerg, and the Luxembourg Consumers' Union may also be able to help.
Before changing the locks, withholding rent, or refusing all future access, obtain advice based on the lease and the facts. A dramatic response may feel satisfying for an afternoon and remain legally inconvenient for considerably longer.
A landlord may own the property, but during the lease it is someone else's home. A spare key may open the door. Except in an emergency, it does not remove the need to knock.
