Small Space Daylight Questions Checklist

Note which direction the main opening faces and mark on a rough sketch the part of the floor that takes direct sun at different points in the day.

Owners often describe a room on the strength of one bright hour, and the sketch quietly corrects that impression.

Record how much of the opening is glass and how much is frame, since a small window loses proportionally more of its area to the frame than a large one.

Two openings of the same overall size can let in noticeably different amounts of light depending on how they are divided.

Note how high the head of the window sits, because light reaching the back of a compact room depends far more on that height than on the width of the glass.

A low window head is one of the most common reasons a small room feels dim at its far end.

Write down whether the opening sits at the end of the room or along its longer side, since the two produce completely different patterns of light.

An opening at the end lights a strip; one along the side spreads light more evenly but shallower into the plan.

Note anything inside the room already standing in front of the window, such as a tall unit, a drying rack, a desk screen or a stack of boxes.

Internal obstructions are the simplest daylight problem to put right and the one owners least often notice in their own home.

Note whether the reveal around the opening is deep, since a deep reveal narrows the spread of light in a way that is easy to overlook.

Thick walls and deep reveals restrict the angle light arrives at, which matters far more in a small room than a large one.

Stand at the opening and write down what faces it: a wall, a fence, a neighbouring building, a balcony, a garage or open sky.

What the window looks at is the single largest influence on how much daylight reaches the room behind it.

Note whether anything overhangs the opening, such as a balcony above, a canopy, a deep eaves or a projecting upper floor.

Overhead obstructions take more light than owners expect because they block the brightest part of the sky.

Record whether a tree outside loses its leaves, since a room can be reasonably bright in winter and noticeably dim once the leaves return.

Observations made in one condition can be badly misleading, and a note about the tree explains a later change nobody understands.

Note how the room feels when the sky is fully overcast, which is the condition most of the light in the room is actually seen in.

Rooms and finishes chosen on a bright day frequently disappoint in the flat light the room usually has.

Consider whether anything outside is likely to change, and ask what could be found out locally about development near this opening.

A daylight decision made now can be undone by something built outside, and it is worth knowing what is known.

What may be built or altered near this property is for the relevant local authority to confirm, not something a checklist can establish.

Photograph the view out from standing height and again from seated height, since the obstruction is often only visible from one of the two.

A seated occupant sees a completely different amount of sky, and that is the position most small rooms are used from.

Note which adjoining rooms have their own daylight, and whether light already reaches this space through a door that is usually left open.

Borrowed daylight is real but conditional, and it disappears the moment somebody needs the door closed.

Consider whether a glazed door, an internal opening or a fanlight has ever been discussed, and ask a qualified professional what would be involved here.

Internal openings are sometimes a straightforward option and sometimes not, and only someone on site can tell you which.

Whether an internal opening can be formed or altered is for a qualified professional to assess and the local authority to confirm.

Write down what borrowing light would take from you in privacy and in sound, since an internal opening carries both in the other direction.

A room used for working or sleeping usually needs the privacy more than it needs the extra daylight.

Note whether the door to this room is usually open or closed in practice, because borrowed light only exists while it is open.

The honest answer to this question decides whether borrowed light belongs in the plan at all.

Record whether the corridor or room supplying the borrowed light is itself bright, since borrowed light is only ever second hand.

Light taken from a dim hallway is barely worth the privacy it takes away, and that comparison is easy to make by standing in both.

Sit where a screen would go and note whether the window falls behind it, beside it or behind you, since each of the three creates a different problem.

There is usually only one workable position in a small room, and knowing which one it is shapes every other decision.

Note the times when low sun comes straight into the room, and write down what would be needed at the opening if it does.

Low sun at one part of the day is enough to make a position unusable, and it is invisible on any drawing.

Record whether a mirror, a gloss cupboard front or a pale worktop throws light into your eyes at any point in the day.

Reflected glare is often blamed on the window when the actual cause is a surface chosen for a different reason.

Consider whether the brightest position in the room is also the position you would want to occupy, since the two are frequently in conflict.

The corner with the most light is often the one with the least usable wall behind it, and something has to give.

Note how early in the day the room needs artificial light, and whether that is true all through the room or only at its far end.

A room that needs a lamp for most of its use is a lighting brief as much as a daylight one, and saying so early helps.

Write down whether anyone in the household finds the room uncomfortably bright or gloomy, and treat that as a requirement rather than a preference.

A stated requirement survives into the design; an unstated preference is silently designed out.

Note where a blind or curtain would gather when fully open, and whether that would sit over part of the glass in an opening this size.

A covering stacked across the glass can take a meaningful share of the daylight from a small window.

Consider whether there is any wall beside the opening for a curtain to stack onto, since compact rooms very often have none at all.

Without stacking space, the choice of covering narrows sharply, and it is far better to know that before shopping.

Write down whether a covering would have to be operated from a seated position or across furniture, and ask suppliers what that means for the options.

A covering that is awkward to reach is left in one position permanently, which defeats the point of having it.

What a particular blind, track or covering can do in this opening should be confirmed with the supplier or fitter rather than assumed.

Note whether the opening is obstructed by a radiator, a projecting sill or a deep skirting that a full length covering would meet.

These obstructions decide the length and type of covering long before appearance is considered.

Consider whether privacy and daylight are wanted at the same time, and record how you would want that handled at this opening.

A room overlooked from close by needs the two treated as one question rather than solved separately.

Ask what the covering means for the window being opened, since a covering that must be raised before the window opens gets used far less.

Ventilation and daylight are usually handled by the same opening, and a covering can quietly end one of them.

Note the colour and finish of the wall directly opposite the opening, since that surface does most of the work in spreading light into the room.

A dark wall facing the window absorbs light that a small room can ill afford to lose.

Consider whether the ceiling is a light colour, because in a compact room the ceiling bounces daylight further than any wall does.

Ceilings are often left out of a colour discussion entirely and then blamed for the room feeling low and dim.

Note whether the floor covering is dark, and how much light it absorbs before anything else has a chance to reflect it.

Floors take the light that arrives first, and a dark one changes the whole character of a small room.

Consider whether a mirror would return daylight or simply reflect the darkest wall, and check what it would actually be facing from where you sit.

Mirrors are treated as a general remedy for small rooms, but they only help when they face something worth reflecting.

Note where fitted joinery is being considered, and whether a dark run of it would sit exactly where daylight currently reaches.

Storage placed in the lit part of a small room is a decision worth making knowingly rather than by default.

Ask suppliers for a sample and look at it in this room against the wall it would occupy, rather than judging it anywhere else.

Finishes shift considerably between the light they are shown in and the light they will live in.

How a finish appears under the light in a particular room should be checked with a sample from the supplier before anything is ordered.

Note whether this room has roof directly above it, and ask a qualified professional whether any overhead daylight would be possible here at all.

Overhead light behaves very differently from a window and often suits a compact room better, where it is possible.

Whether an opening can be formed in a roof or wall at this property is for qualified professionals to assess and the local authority to confirm.

Ask what forming or enlarging an opening in this particular wall would involve, and record the answer rather than assuming it is straightforward.

The same idea can be simple in one property and a major undertaking in another a street away.

Write down what you would want an opening to achieve, since daylight, view, air and a way out are four different aims with four different answers.

Stating the aim first prevents a design that solves one of them while quietly failing the others.

Note whether this room has an external wall at all, since some compact rooms in flats and converted spaces have none to work with.

A room with no external wall is a very different conversation, and starting there saves everyone effort.

Ask what would need to be confirmed locally before any new opening is designed, and keep that answer with the rest of your notes.

Local requirements differ a great deal, and the question is far easier to ask early than to discover the answer late.

What applies to a new or altered opening at this address must be confirmed locally with the relevant authority.

Keep photographs of the room taken at several points through the day, always from the same position so they can be set beside each other.

A set of comparable photographs tells a designer more about a room than any description an owner can give.

Write down the darkest position in the room and the brightest, and note what each of them is currently used for.

The mismatch between where the light is and where the activity is often turns out to be the whole problem.

Record which observations were made in bright conditions and which in overcast ones, since a single set of notes can mislead badly.

Notes without their conditions attached are almost impossible to interpret afterwards.

Separate what you observed from what you concluded, since a professional wants the observations and will draw their own conclusions from them.

Owners tend to present a diagnosis rather than the evidence, and the evidence is the part that is genuinely useful.

Date the notes and the photographs so a later design can be checked against what the room was genuinely like when you looked.

Daylight conditions change with the seasons and with what happens outside, and undated notes lose their meaning.