Assessing light for a home office during a viewing

Orientation and obstruction are permanent, and in an apartment the windows are frequently not yours to change. Five checks at the viewing decide whether a workspace will be pleasant for five months of the year.

Why this belongs at the viewing

The sun rises around half past eight and sets before half past four in late December, and a large share of days between November and February are overcast. From roughly mid-October to mid-March an ordinary working afternoon happens under artificial light.

Everything else about a workspace can be bought afterwards. Orientation, obstruction and window size cannot, and in a copropriété the facade and frequently the joinery are common parts, so replacing glazing is not a unilateral decision either.

Check one: the compass bearing

Take it with a phone rather than accepting a stated answer, room by room.

North light is even and glare-free, which is excellent for a screen and dark by mid-afternoon in winter. East suits a morning desk. South and west bring the most light and, in newer buildings with large glazing, the most glare and summer heat.

For a home office specifically, north and east are frequently better than the orientations people instinctively prefer, because a screen dislikes direct sun.

Check two: the angle to the obstruction

Stand at the window and estimate the angle to the top of whatever faces it. Above roughly forty-five degrees, even a south-facing room on a low floor receives very little direct winter sun.

This is the check that most often contradicts the orientation. A south-facing second floor across a narrow street is darker in January than a north-facing fifth floor with open sky.

Check three: window head height against room depth

Useful daylight reaches roughly two to two and a half times the window head height into a room. A deep room with a low window head is dark at the far end regardless of orientation.

That tells you where the desk can go, which in a small room may be the only workable position and in a large one rules out half the floor.

Note also whether the window is in a deep reveal, common in older converted stock, which is handsome and cuts the angle of light entering.

Check four: what the room has for artificial light

Count three things: ceiling points, sockets and their positions, and which sockets are switched from the wall.

This is the real constraint in Luxembourg apartments. Unfurnished lettings frequently come with bare ceiling fixtures or none, and older converted buildings in Limpertsberg, Belair and the Gare district often have very few sockets per room.

A workspace needs three layers: task light that does not throw a shadow across the work or reflect off the screen, ambient light so the contrast is not exhausting, and one diffused source in front of you at roughly face height for calls. A position with no socket within reach becomes a lead across a walkway.

Check five: the shutters

In newer buildings with large south or west-facing glazing, the summer problem is glare on the screen and a room too warm to work in.

The distinction that matters is between internal and external shading. Internal blinds stop glare after the energy has passed the glass; external roller shutters, common in Luxembourg construction, stop heat before it enters.

Check whether shutters exist on every window, whether they are motorised and whether they actually run, since a jammed shutter was either broken before you arrived or it becomes yours. You cannot add external shading yourself, because the facade is almost always a common part.

Where the desk should go once you know

Daylight from the side rather than in front of or behind the screen. Facing a window produces glare and a bright rectangle you look past all day; sitting with one behind you puts you in silhouette on every call, particularly in winter when the sky is brighter than the interior.

Sit at each candidate position with a laptop camera open and look. It takes a minute and it settles the orientation question more reliably than any reasoning about compass bearings.

Testing the artificial version too

Where a viewing falls after four in the afternoon between November and February, that is an advantage rather than a problem.

Turn off every light in the room and look out: what you can see of the sky is what will light it in daylight. Then turn the existing fittings on and look at the same position. A room that works in daylight and produces a reflection from the ceiling fitting after four is a room where the desk will be moved.

Three questions we are asked

Is a north-facing office a problem? Frequently the opposite. It is even, glare-free and stable, and the constraint is that it disappears earlier, which the ambient layer addresses.

Can I add a window? No. The facade is a common part and any change requires the general assembly's authorisation, with improvement works needing an absolute majority of all millièmes.

Does a daylight lamp help? For a genuinely dark position some people find it does, and it is not a reason to accept a dark room when a better one exists in the same apartment.

The five checks as a sequence

Done in order they take under five minutes and they settle the question for the whole apartment.

Compass bearing of each candidate room. Angle to the top of whatever faces each window, estimated from the window rather than from the street. Window head height against the room depth. Ceiling points, socket count and which sockets are switched. And whether external shutters exist and run.

Then sit at the two most plausible desk positions with a laptop camera open and look at what the frame does. That last step takes a minute and contradicts the reasoning about compass bearings more often than people expect.

What to do with a room that fails

Where the best available position is genuinely dark, the honest responses are in this order.

Try another room first, including ones dismissed as too small. In converted stock the best-lit room is frequently not the largest, and a desk needs a wall and a window rather than floor area.

Then build the three artificial layers properly, with the accent layer washing a wall so the room reads as having depth rather than being uniformly dim.

Then accept it knowingly. A dark workspace chosen with open eyes is a different thing from one discovered in a second November, and if no position in the apartment works and you are at a desk five days a week, that is a legitimate reason to keep looking.