A Luxembourg rental viewing checklist, ordered by what costs you money later

Most viewings in Luxembourg City last twenty minutes and are shared with three other applicants. You cannot inspect everything. What you can do is inspect the six things that are expensive, slow or impossible to fix once you have signed, and let the rest go.

Before the door opens: two documents to ask for

Ask the agent for two things when you book the slot, not when you arrive. The first is the energy passport (Energiepass), which every property offered for rent in Luxembourg must have. It gives you the building's thermal class before you see a single room, and in a country where heating runs from October to April, the gap between a class A new-build in Cloche d'Or and an unrenovated class G townhouse in Bonnevoie can be several hundred euros a month.

The second is the charges statement for the previous year. Advertised rents in Luxembourg are quoted excluding charges, and the monthly avance sur charges is an estimate that gets reconciled once a year at the building's general assembly. An apartment at €2,100 with €450 of realistic charges is a different proposition from one at €2,250 with €150. If the agent cannot produce a figure, treat the charges as unknown rather than as low.

Water pressure, and the three-minute test

Water pressure is the single most common post-move complaint we hear, and it is the fastest thing to check. Run the kitchen tap and the shower at the same time. In older buildings in Limpertsberg and Belair, particularly those converted into multiple units, a fourth-floor flat can lose usable pressure whenever the ground floor runs a washing machine.

While the hot tap runs, note how long it takes to warm. A long delay usually means the boiler or the water heater sits far from the outlets, which costs both water and patience every morning. Ask where the water heater is and when it was last serviced. In furnished lettings this is often the landlord's responsibility, but the lease decides.

The heating system tells you more than the radiators

Establish whether the heating is individual or collective, because the two behave completely differently in your budget. With individual gas heating you hold your own supply contract and control the cost. With collective heating, consumption is allocated through the building's charges according to heat-cost allocators on each radiator, reconciled annually, and you have limited control over the outcome.

Look at the radiators themselves. Thermostatic valves that turn freely, no rust at the joints, no bleed marks on the wall behind. Ask when the boiler was last serviced and whether the certificate is available. In a collective system, ask the agent when the building last replaced the boiler; a system in its twentieth year is a future special assessment for the owner and, indirectly, a future charges increase for you.

Sound, measured properly

Stand in the main bedroom and stay silent for thirty seconds. That is uncomfortable in front of an agent and it is the most useful thirty seconds of the viewing. What you are listening for is not traffic, which you already expect, but the two sources people forget: the lift shaft and the building's water risers.

Then check the windows. Double glazing is standard in Luxembourg new-builds, but in converted older stock you will find single glazing on a rear elevation while the street side has been upgraded. Put a hand near the frame. A cold draught in September is a genuine problem in January.

Location-specific: flats near the Gare, along Route d'Esch, or on the tram corridor through Kirchberg will carry ambient noise regardless of glazing. That is a legitimate trade for the commute. What is not legitimate is discovering it after signing.

Storage, and the measurement that decides it

Luxembourg apartments, particularly new ones, are efficient on floor area and thin on storage. Two measurements are worth taking with a tape:

• The cave. Almost every apartment building has cellar storage, and its size varies enormously. Ask to see it, not just to be told it exists. A cave is where bicycles, ski equipment, suitcases and winter tyres live.
• Bedroom wall runs. Measure the longest uninterrupted wall in each bedroom. Unfurnished Luxembourg lettings frequently have no wardrobes at all, and a room with three doors and a radiator may have no wall long enough to take one.

Also check whether the flat has a parking space and whether it is included or charged separately. In Limpertsberg, Belair and Ville Haute a space is often billed on top of the rent, and outdoor parking in those districts is heavily restricted by resident permit.

The route you will actually walk

Walk from the front door of the building to the nearest tram or bus stop, and time it. Do not accept the agent's figure. The tram runs from Luxembourg Airport through Kirchberg, Ville Haute and the Gare down to Cloche d'Or, and proximity to a stop is one of the strongest determinants of how a flat feels day to day. All public transport in Luxembourg is free, so the question is never cost, only time and frequency.

Then check the ground the route covers. Luxembourg City is built on a plateau cut by valleys, and a flat in the Grund or Pfaffenthal that is nine minutes from Ville Haute on the map is nine minutes plus a lift or a serious climb.

Three questions we are asked

Should I bring a tape measure to a viewing? Yes, and a phone torch. The torch is for the cave, the boiler cupboard and the back of kitchen units, which are the three places where problems are visible and rarely photographed.

Can I ask to see the flat a second time before committing? You can ask, and in a slower market you will get it. In a competitive one you often will not, which is why the first viewing has to be structured. If you can only visit once, visit at the time of day you will actually be home.

What if the flat is still occupied? That is common and it is an advantage. The outgoing tenant will answer questions the agent will not: how the heating performs in February, what the charges reconciliation came to, whether the neighbours are quiet. Ask them directly.

What the building tells you before the flat does

Arrive ten minutes early and spend them outside the apartment. The common parts are a reliable proxy for how the building is managed, and management is what determines your charges over the next three years.

Look at the entrance hall, the letterboxes and the stairwell. A syndic that keeps the common areas maintained is usually a syndic that services the boiler and the lift on schedule. Peeling paint, a broken entryphone panel or a lift with an out-of-date inspection certificate posted inside the cabin are all signals that deferred maintenance is accumulating, and deferred maintenance in a Luxembourg co-ownership eventually arrives as a special assessment on the owner and a charges increase on you.

Check the bin store and the bicycle store. Luxembourg communes operate separated waste collection, and a building with no organised space for it means bags in the corridor. Check whether there is a communal washing area or whether the flat has its own connection: in converted older buildings in Limpertsberg and the Gare district, a washing machine connection cannot be assumed.

Finally, read the notice board. Minutes of the last general assembly, planned works, or a notice about a facade renovation are all information the agent has no obligation to volunteer and every reason to hope you do not read.