How to Measure Alcove Cabinets for a Perfect Fit

An alcove can look straightforward until you put a tape measure against it. Walls are rarely perfectly square, chimney breasts often taper slightly, and skirting boards, sockets and picture rails all affect the final design. Knowing how to measure alcove cabinets properly gives you a clearer idea of what is possible and helps ensure a fitted result rather than a forced-in piece of furniture. For homeowners in Edinburgh, West Lothian and Central Scotland, accurate measurements are the starting point for cabinetry that makes awkward space useful. Whether you are planning low cupboards beside a fireplace, full-height shelving or a combination of both, measure the room carefully before settling on a layout. Start with the overall alcove dimensions Use a reliable steel tape measure, a pencil and paper, or a simple sketch of the wall. Measure in millimetres where possible. This is the standard approach for bespoke joinery and makes it easier to record small variations accurately. Take the width of the alcove at three points: near the floor, at the middle and just below the ceiling. Record each figure. The narrowest measurement matters most, as the cabinet must fit within it. If the measurements vary, the walls may be out of plumb or the chimney breast may not run perfectly straight. That is common in both period homes and newer properties. Next, measure the height from the finished floor to the underside of the ceiling, again at the front and back of the alcove if it is deep enough to do so. Finally, measure the depth from the front face of the chimney breast or adjoining wall to the rear wall. Take this at floor level, mid-height and higher up where possible. Do not assume one measurement tells the whole story. A difference of even 10mm can affect how a cabinet is scribed and fitted against the wall. How to measure alcove cabinets around fixed features The usable space is not always the same as the bare wall-to-wall dimensions. Before deciding on cabinet size, identify every feature that projects into or interrupts the alcove. Skirting boards are the most obvious example. Measure their height and thickness from the wall face. A bespoke cabinet can be notched around existing skirting, set forward of it, or installed after the skirting has been adjusted. Each option changes the finished depth and appearance. For a built-in look, it is often preferable to consider how the plinth and skirting will meet as part of the overall design. Picture rails, cornices and dado rails also need recording. Measure their projection from the wall and their height from the floor. If you want full-height cabinetry, these details determine whether the joinery finishes below the moulding, returns neatly around it, or is carefully scribed to follow the profile. Make a note of radiators, pipework, ventilation grilles, sockets, switches, aerial points and light fittings. Record their position from two fixed points, usually the floor and the nearest side wall. For example, do not simply write "socket in left alcove". Record how far it sits from the chimney breast, how high it is, and whether it will need to remain accessible. A cabinet should not block a heat source or restrict ventilation. If a radiator is in the alcove, a shallower unit, open shelving above, or a different layout may be more suitable. It depends on the heating arrangement and how much storage you need. Check the chimney breast and wall condition Alcove cabinetry is typically built beside a chimney breast, so its dimensions deserve particular attention. Measure the chimney breast width at the floor, middle and upper section. Also check its depth, particularly if your cabinets are intended to align with its front edge. Run a straight edge or long spirit level along the wall if you can. This can reveal bows, dips and changes in the plaster that a tape measure alone may not show. Older homes often have wall surfaces that move subtly over their height. These imperfections are not a problem for made-to-measure joinery, but they must be allowed for during manufacture and installation. Look closely at the floor too. A floor may slope towards the fireplace, dip near an external wall, or rise under old carpet and underlay. Measure the cabinet height from the floor at both sides of the alcove. If there is a noticeable difference, a joiner can level the unit during fitting and use a plinth or scribed infill for a clean result. Decide what the cabinet needs to do Measurements should support the way you live, not simply fill every available millimetre. Before finalising a plan, consider what will be stored and how often you need to access it. Low alcove cabinets are well suited to board games, paperwork, toys, media equipment and household items that benefit from being hidden away. They can also provide a useful surface for lamps, books or artwork. Full-height cabinetry offers far more capacity, though it has a stronger visual presence and can make a narrow room feel more enclosed if the design is too heavy. Shelving works well for books and display pieces, but shelves need enough depth to be genuinely useful. Standard paperback books need less depth than large art books, files or vinyl records. If the alcove is shallow, consider whether open shelves will look balanced or whether a shallow display unit is the better choice. Door choice matters too. Hinged doors need clearance in front of the cabinet. In a tight sitting room, a pair of smaller doors may be more practical than one wide door. Push-to-open doors create a clean, handle-free frontage, while knobs or pulls can better suit a traditional room. These choices affect the design more than the overall alcove measurement, but they should be considered early. Leave room for fitting tolerances Off-the-shelf furniture is generally made to a fixed size and relies on spare room around it. Bespoke alcove cabinets work differently. They are designed to suit the space, with carefully planned fillers, scribed panels and plinths that accommodate uneven walls and floors. That does not mean cabinets should be made to the largest measurement in the alcove. A unit built too tightly can be difficult to position and may not sit correctly once it meets an irregular wall. Skilled fitting requires sensible tolerances, particularly for tall units and cabinetry that runs wall to wall. For this reason, your own measurements are best used to explore the possibilities and communicate your requirements. Final production dimensions should be confirmed through a professional site survey. A master joiner will assess the room in person, check for variations that are easy to miss, and establish the right allowances for a precise installation. Create a simple measurement sketch A clear drawing is more useful than a page of isolated figures. It does not need to be architectural. Draw the chimney breast, both alcoves and the surrounding walls as viewed straight on. Add the width and height measurements, then produce a separate plan view showing depths. Mark the location of every socket, radiator, pipe, rail and skirting detail. Label which measurement applies at the top, middle or bottom of the alcove. Taking a few photographs from directly in front of the wall and from each side is also helpful, especially where ornate mouldings or uneven corners are involved. If you have a preferred cabinet style, include that on the sketch. For instance, you might note a painted shaker-door base unit with floating shelves above, or a full-height painted bookcase with lower cupboards. This helps turn a set of measurements into a practical brief. When to arrange a professional survey Measuring your alcove is worthwhile before seeking a quotation, but there are situations where a professional survey is particularly valuable. This includes very old properties, visibly uneven walls, full-height fitted furniture, cabinetry around a working fireplace, or designs that incorporate lighting and electrical equipment. A bespoke installation is about more than making furniture fit. The proportions need to suit the room, the materials need to complement the property, and the finished joinery needs to look as though it has always belonged there. At Install Joinery Scotland, master joiner Robin Adams approaches each alcove as an individual part of the home, rather than a standard cabinet size waiting to be filled. A careful initial measure gives you confidence to start planning. Let the final design respond to the details of your room, and your alcove can become useful storage with the quiet, fitted finish that makes a home feel properly considered.