One workspace is a layout question. Two is an acoustic question, and the apartment either has two acoustically separable positions or it does not. That is checkable in a twenty-minute viewing.
The problem is calls, not desks
Two desks fit in most apartments. Two people on calls at the same time, in the same acoustic space, do not.
So the requirement is two positions that are separable, which means a door between them or enough distance and soft material that neither is audible on the other's microphone. A single open-plan living room cannot supply that regardless of its floor area.
Establish this before anything else, because it determines whether the apartment works at all rather than how well it is arranged.
The three configurations that work
Two rooms with doors. The only arrangement that is comfortable five days a week each. It usually means paying for a second bedroom, which in a Luxembourg apartment is a real cost and which also widens the pool of future buyers and tenants.
One room with a door plus one well-placed corner. The most common workable compromise. The person with the most calls takes the room; the other takes a corner out of the circulation route with side light and a wall behind.
Two corners with staggered schedules. Viable where calls can be scheduled rather than continuous. It requires coordination rather than architecture, and it fails on days when both diaries are full.
Testing acoustic separation at a viewing
Two exercises, both under a minute, and they measure different things.
Stand in each candidate position with the window closed and stay silent for thirty seconds. Anything you hear is transmission through the building, which is a property of the structure and, in a copropriété, is not fixable by an occupant since the floors between lots are common parts.
Then have one person speak at normal volume in one position while the other stands in the second. If the words are intelligible, the positions are not separable. In the converted townhouses that dominate Limpertsberg, Belair and the Gare district, timber floors and thin partitions transmit far more than the street does.
What can be improved and what cannot
Reverberation is entirely a furnishing problem: a rug with underlay, curtains hung outside the window reveal so they clear the glass when open, felt pads under every chair leg, and a bookcase with books on it behind each desk. Irregular mass scatters sound better than any flat panel.
A draught excluder at the base of an interior door attenuates speech noticeably and costs almost nothing, which is the single highest-return acoustic purchase in this situation.
What cannot be improved is the structure. Improvement works in a co-ownership require an absolute majority of all millièmes at the general assembly, present or not, which in a building with absentee owners is genuinely hard to assemble.
Power and light, which two desks double
Two workstations need power in two places: laptops, screens, chargers and three light sources each. Older converted buildings frequently have very few sockets per room, and unfurnished Luxembourg lettings frequently come with bare ceiling fixtures or none.
Count the ceiling points and the position of every socket at the viewing, and note which sockets are switched from the wall. A position with no socket within reach becomes a position with an extension lead across a walkway, which is both a nuisance and a hazard.
Anything wired requires the landlord's consent in a rental and, in an owned apartment, frequently the general assembly's authorisation for anything touching the building's common systems.
Daylight for two positions
The sun sets before half past four in late December and a large share of days between November and February are overcast, so both positions are lit artificially from mid-afternoon for five months.
Each needs side daylight where possible, a task light that does not throw a shadow across the work, and one diffused source in front for calls. Facing a window produces glare on the screen; sitting with a window behind puts you in silhouette.
Check the compass bearing of each room and the angle to the top of whatever faces the window. Above roughly forty-five degrees, a south-facing room on a low floor receives very little direct winter sun.
The cross-border variable, which may set the pattern
For anyone employed in Luxembourg and resident in France, Belgium or Germany, the number of home-working days is partly governed by rules rather than preference, and two independent thresholds apply.
The fiscal threshold for residents of France and Belgium is 34 days a year worked outside Luxembourg, with any partial day counting as a whole day. The German threshold has been revised and should be verified directly. The social threshold is separate: under the European framework agreement in force since 1 July 2023, a cross-border worker may telework up to 49.9% of working time and remain affiliated to Luxembourg social security, on request through an A1 certificate issued by the CCSS.
Where both people in a household are cross-border workers, their patterns may not coincide, which changes how often the two-position problem actually arises.
What to check at a viewing
Six things, none of which appears in a listing. The number of rooms with doors. The distance between the two most plausible positions. Thirty seconds of silence in each. The speech test between them. The socket count and positions. And the compass bearing and obstruction angle for each.
An apartment that fails the speech test is one where two people will negotiate their calendars every morning for as long as they live there.
Three questions we are asked
Is a bedroom acceptable as the second office? Yes, provided the desk faces a wall rather than the bed and the room has a socket within reach. Turning the desk resolves the camera problem entirely.
Do headphones solve it? For what you hear, largely. For what your microphone picks up from the other person in the apartment, not at all.
Is it worth paying for a third bedroom? For two people working five days a week each, frequently yes, and it also improves resale since two modest bedrooms address more household types than one large one.
Three questions we are asked
Can a corridor work as a second position? Where it is wide enough that a chair pulled out does not block it, and where a socket is within reach. It is frequently more separable acoustically than a corner of the living room.
What about a shed or a cave? The cave is not a workspace: most co-ownerships restrict its use, ventilation is poor and it is frequently damp. Check the base of the walls for salt bloom before considering it.
Is it worth moving for? If both people work from home most of the week, yes, and the feature to search for is a second room with a door rather than more floor area.
Editorial note: This is a framework for a housing decision, not advice on a specific property. Communal rules, building regulations and transport works in Luxembourg change. Verify with your commune, your lease or règlement de copropriété, Luxtram and guichet.lu before relying on any of the above.