Checklists · Bathroom
Bathroom Mirror and Cabinet Decision Checklist
Helps you decide what the mirror position has to do each morning, what a cabinet would really hold, and which questions about the wall, the light and the fixings belong with a qualified professional.
7 sections · 40 planning prompts · educational owner-side preparation
https://www.builddesignhub.com/checklists/bathroom-planning/bathroom-mirror-and-cabinet-decisions · Build Design Hub — educational planning resource. Requirements vary by project and location.
Scope
What this checklist covers
The preparation ground these prompts walk through.
- Working out what the mirror position has to do for each member of the household
- Weighing a plain mirror against a cabinet that projects from the wall
- Door swings, hinge sides and the reflection you lose when a door is open
- Shelf heights, tall bottles and what genuinely needs to live behind the doors
- Integrated lighting, demisting and charging as questions for a qualified electrician
- Fixing height, the wall behind and getting the unit off it again later
Audience
Who this checklist is for
- Owners replacing a bathroom mirror and unsure whether to add a cabinet
- Households where more than one person uses the mirror at the same time
- Anyone whose bathroom surfaces are covered because there is nowhere else to put things
- Owners preparing questions for a bathroom supplier, joiner or electrician
Timing
When to use it
- Deciding whether a cabinet earns the depth it takes above the basin
- Recording who uses the mirror and what each of them needs to see in it
- Preparing questions about integrated lighting rather than trying to answer them
- Working out what is currently on the surfaces and where it would go instead
- Comparing a recessed and a surface mounted arrangement on daily use
Limits
When it is not sufficient
This is general planning preparation. These situations need a qualified professional, and often the relevant authority.
- Deciding whether a cabinet can be recessed into any particular wall, which a qualified professional has to establish
- Settling anything electrical at the mirror, which belongs with a qualified electrician and the relevant local requirements
- Determining how a loaded cabinet should be fixed, which is a matter for qualified people on site
- Judging whether a mirror or its backing suits a damp position, which the supplier must confirm for that product
The checklist
Work through the sections
Tick the boxes on paper or on screen — nothing is stored, so print the page if you want to keep your marks.
1.The routines that happen in front of the mirror
The mirror is used more often than anything in the room except the basin. Start from the routines that happen in front of it rather than from a shape you have seen and liked.
List what actually happens at the mirror each morning, from shaving and contact lenses through to hair and teeth, and note who does each of them.
Different routines want different things from a mirror, and a written list stops one person preference quietly deciding for the whole household.
Note whether two people ever need the mirror at the same time, and what currently happens in the room when they do.
Shared use decides whether one wide mirror or two separate positions makes sense, and it is easily forgotten when the planning is done alone.
Write down the height of the tallest and the shortest regular user, and consider what each of them would see at the position you have in mind.
A mirror hung for one person can cut off the head of one user and the chin of another, and that is fixed the moment the fixings go in.
Consider whether anyone sits rather than stands at the mirror, and what that would change about the useful centre of it.
Seated use moves the useful part of a mirror a long way down, and it is rarely mentioned unless somebody asks the question directly.
Note what you currently hold or balance while using the mirror, and where each of those things gets put down.
Anything with nowhere to rest ends up on the basin surround, which is where most bathroom clutter actually begins.
Decide whether a magnifying position is wanted by anyone in the household, and where it would be reached from.
A close-up mirror is either used every day or never touched, and deciding now avoids one being clamped onto something afterwards.
2.Weighing a plain mirror against a cabinet
A cabinet buys storage and spends depth. Whether that trade suits your room depends on where you stand at the basin and on what you would otherwise leave on show.
Stand at the basin as you normally would and note how far a cabinet would project towards your face while you lean in to wash.
Projection is felt rather than seen, and standing in the real position tells you far more than looking at an elevation ever will.
Decide whether anything above or beside the basin would collide with a projecting cabinet, including a window reveal or a sloping ceiling.
Reveals and slopes are the usual reason a cabinet is abandoned after it has been chosen, and both of them are visible to you right now.
Ask a qualified professional to confirm what a cabinet can be fixed into where a window reveal or a sloping ceiling is involved.
Write down what you would put inside a cabinet that is currently on show, and be honest about whether it would actually be put away.
A cabinet only reduces clutter if the household uses it, and the honest list decides how much enclosed storage is genuinely needed.
Consider whether a plain mirror with storage elsewhere in the room would suit better than a cabinet sitting over the basin.
Separating the two often gives a larger reflection and puts the bulk somewhere it is less in the way of a person leaning forward.
Note whether a cabinet would darken the basin area by blocking light from a window or from a ceiling fitting above.
Depth above the basin casts a shadow onto exactly the part of the room where people need to see, and correcting that afterwards is awkward.
Decide how wide the mirrored surface should be relative to the basin below it, then mark that outline on the wall with tape.
Tape settles arguments about scale that no image ever settles, and living with the outline for a while asks nothing of anyone.
3.Recessing a cabinet into the wall behind
A flush cabinet is the arrangement owners want most and the one that depends entirely on what the wall turns out to be. Collect observations, then ask.
Note whether the wall behind the mirror position sounds hollow or solid, and mark on your sketch where that changes along its length.
A change in sound along the wall tells you something behind it is different, which is the beginning of a question rather than an answer.
What a wall is built from, and whether anything may be cut into it, must be established by a qualified professional.
Write down what is on the other side of that wall, including any room, built-in cupboard or external face of the building.
A recess takes depth from somewhere, and knowing what is behind changes the conversation from a wish into a practical question.
Ask what services might run inside that wall before a recess is treated as possible by anyone in the discussion.
Pipes and cables are routinely found exactly where a cabinet was going to sit, and asking early is far easier than finding out midway.
What runs inside a wall must be established by a qualified professional before any cutting into it is planned.
Ask whether a partially recessed arrangement is possible if a full recess is not, and what that would look like from the doorway.
A shallow recess still reduces projection noticeably, and it is often available in walls where a full recess is not.
Note whether the wall behind is shared with a bedroom, and raise the question of sound passing through it once a recess is formed.
Cutting into a shared wall raises questions about noise that nobody thinks about until doors start closing late at night.
Ask a qualified professional what cutting into a shared wall would involve and what applies locally in your area.
4.Doors, hinge sides and the reflection you lose
A cabinet door is a mirror that moves. Where it swings, and what it takes with it when it goes, is the detail owners notice on the very first morning.
Decide which side a single door should hinge on, then stand at the basin and check it would not open straight into your face.
Hinge side is chosen by a supplier by default when nobody states a preference, and it is awkward to change once the unit has arrived.
Note what you would be looking at while a door is open, since the mirror in front of you leaves the wall with it.
Anyone reaching in while looking at themselves discovers this immediately, and a pair of doors behaves quite differently from a single one.
Consider whether the inside faces of the doors should be mirrored as well, and what anybody would actually use that for.
Mirrored interiors help with hair at the back of the head, and they also show every fingerprint left on a damp surface.
Ask whether the doors are held by a catch or a soft closing mechanism, and how that part would be replaced when it stops working.
Hinges and catches are the parts that fail on a bathroom cabinet, and whether they can be replaced changes which unit makes sense.
Ask the supplier what replacement hinges, catches and shelves are available for the unit before anything is ordered.
Note whether a door would foul a tap, a light fitting or the wall beside it when it is opened fully rather than halfway.
Full opening is where collisions happen, and it is easy to check against the taped outline before a single item is ordered.
Decide whether a sliding door arrangement would suit this position better than doors that swing out over the basin.
Sliding doors remove the swing problem and give up part of the opening, which matters when reaching for something at the back.
5.What goes inside, shelf by shelf
Cabinets are usually chosen for the outside and disappoint on the inside. Hold the tallest thing you own where a shelf would go before deciding anything.
Take the tallest bottle and the tallest packet you keep in the bathroom and hold them at the height a shelf would sit.
Fixed shelves defeat tall items constantly, and this simple physical test is the one owners skip more often than any other.
Ask whether the shelves are adjustable, removable and replaceable, and what material each of them is made from.
Glass, plastic and coated shelves behave very differently in a damp room, and adjustability decides how long the unit stays useful.
Decide what needs to be kept out of easy reach in this household, and discuss that arrangement rather than assuming a cabinet handles it.
Storing anything with care is a household decision, and the right answer depends on the people in the house rather than on the unit.
Where medicines and household products are kept should be discussed with a suitably qualified professional or a pharmacist.
Note anything that needs charging in the bathroom, and raise the question of a point inside the cabinet as a separate subject.
Charging arrangements inside a cabinet are an electrical matter, and recording the need lets the right person answer the question properly.
Ask a qualified electrician what applies to a charging point in this position, and confirm the local requirements before assuming one is possible.
Write down what currently lives on the windowsill and on top of the cistern, since those are the items looking for a home.
The overflow that has already happened is the most accurate description available of how much storage this room actually needs.
Consider whether the bottom of the cabinet should be open for a toothbrush or a cup that gets used several times a day.
Items used constantly rarely go back behind a door, and an open shelf accepts that habit rather than quietly fighting it.
6.Light at the mirror and where it comes from
Light in front of the face does the work; light near the mirror only looks as though it does. This is settled long before anything is switched on.
Stand at the mirror position at different points in the day and note where the light falling on your face actually comes from.
Observation across several visits describes the position far better than any lighting layout can at this stage of the planning.
Decide whether lighting integrated into the mirror is wanted, or whether separate fittings beside it would suit the room better.
Integrated light is tidy and ties the light to the unit, while separate fittings can be changed or replaced independently of it.
Ask whether the light source in an integrated unit can be replaced when it fails, and what happens if it turns out it cannot.
Some units are replaced entirely once the light stops working, which is worth knowing before choosing rather than afterwards.
Ask the supplier in writing whether the light source is replaceable and what the manufacturer information states about it.
Note whether the light would appear warm or cool, and consider who applies makeup or judges colour at this particular mirror.
The appearance of the light changes how skin and colour read, and the people who care about that care a great deal.
Ask what a demisting arrangement involves and whether it draws power whenever the mirror light is switched on.
Demisting is popular and is entirely an electrical subject, so it belongs in the conversation early rather than as an afterthought.
Demisting draws power, so bring a qualified electrician into the discussion early and ask them what applies in your area.
Write down where the switch for any mirror light would sit and whether it can be reached without leaning across the basin.
Switch position gets decided quickly by somebody else when the owner states no preference, and it is then lived with every day.
7.Fixing height and getting it off the wall later
A cabinet is heaviest when it is full and hardest to deal with once it is fixed to a tiled wall. Both of those deserve a question now.
Ask what the cabinet would be fixed into, and what that wall is capable of carrying once the unit is loaded with everything you keep.
A loaded cabinet is far heavier than an empty one, and the fixing question is not answered by the weight printed on a specification.
How a cabinet is fixed, and what a particular wall can carry, must be established by a qualified professional rather than assumed.
Note whether the wall will be tiled, and ask how drilling into the finished surface would be handled and by whom.
Fixing into tile is a different conversation from fixing into plaster, and the sequence matters to whoever ends up doing the work.
Decide whether the cabinet should be centred on the basin, on the wall or on a window, since those three rarely coincide.
Owners assume the three line up, and choosing which one governs avoids an argument once the marks are already on the wall.
Ask how the unit could be taken off the wall for redecorating, and what would be left behind on the wall when it comes down.
Removal is almost never discussed and eventually always happens, particularly where a recess or a fixed light is involved.
Write down what you want handed over about the mirror and cabinet at the end, including references for shelves, hinges and any light source.
These parts are almost impossible to identify later, and asking at handover is far easier than trying to trace them afterwards.
Preparation
Documents and information to gather
Having these to hand usually makes the first conversation shorter and more useful.
- Photographs of the basin wall as it is now, including the windowsill and anything on the cistern
- Your rough measurements of the wall above the basin and of any reveal or slope beside it
- Published details from the maker of any mirror or cabinet under consideration, including its shelves
- A written note of who uses the mirror, their heights and what each routine needs from it
- Any paperwork from previous work carried out on the wall behind the mirror position
- A photograph of the taped outline on the wall so the size can be discussed later
Records
Decisions to record before work begins
Write these down in your own words, with the date, so everyone is working from the same version.
- Whether a plain mirror or a cabinet is being pursued, and what led you to that view
- The hinge side, or the sliding arrangement, chosen for the doors and who confirmed it
- The agreed height and outline, taken from the marked-up wall rather than from a drawing
- Whether integrated lighting or separate fittings beside the mirror is preferred
- What the household expects to keep inside the cabinet and what stays out on show
- Whether a recess is being asked about, and who is establishing whether it is possible
Professional review
Questions to discuss with qualified professionals
Bring these to the relevant qualified professional, supplier or authority. Requirements vary by project and location.
- What is this wall built from, and what would recessing a cabinet into it involve?
- What services might run inside the wall behind the mirror position?
- What would the cabinet be fixed into once it is loaded with everything we keep in it?
- Is the light source in this unit replaceable, and what does the manufacturer state?
- What does a demisting arrangement need, and which local requirements apply here?
- How would the unit be taken off the wall later, and what would be left behind?
- Which of the basin, the wall and the window should the mirror be centred on?
- What replacement hinges, catches and shelves are available for this particular unit?
Blind spots
Commonly overlooked items
- The mirror in front of you leaving with the door every time a single door cabinet is opened
- A projecting cabinet casting a shadow onto exactly the part of the basin people need to see
- Fixed shelves that will not take the tallest bottle already sitting in the bathroom
- The switch for a mirror light ending up somewhere that means leaning across the basin
- Nobody stating a hinge side, so the supplier quietly chooses one by default
- Taking a fixed cabinet off the wall for redecorating, and what is left behind when it goes
What this checklist does not do
- This checklist prepares questions about mirrors and cabinets only. Whether a recess is possible in your wall is for a qualified professional who has assessed the construction on site.
- Anything electrical at the mirror, including integrated lighting, demisting and charging points, must be discussed with a qualified electrician and confirmed against the relevant local requirements.
- How a loaded cabinet is fixed, and what a particular wall can carry, are matters for qualified people rather than conclusions to be drawn from a page.
- Nothing here establishes that a mirror, its backing or a cabinet carcass suits a damp position; ask the supplier to state that in writing for the unit you choose.
More preparation
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Inspiration
Related Ideas Library pages
Design directions to explore once the preparation is done.
Go deeper
Related Build Design Hub guides
Explanatory planning guidance behind the decisions on this page.
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