Alcove Units Cost UK

Why alcove units are worth the investment

A chimney breast alcove is typically 400–600mm deep and anywhere from 600mm to 1,200mm wide. In most living rooms, this space is either left empty, filled with a freestanding unit that never quite fits, or used as a dumping ground. Built-in alcove units convert it into genuinely functional, beautiful storage.

The other reason alcove units are worth doing: they are one of the highest return-on-investment carpentry projects. A pair of well-executed alcove units in a living room costs £2,000–£4,000 and consistently adds more than that to a property's perceived value. They are the first thing prospective buyers notice in a living room — and the absence of them is also noticeable.

Designing alcove units that actually work

The biggest mistake people make with alcove units is making decisions about aesthetics before making decisions about function. Before thinking about the finish colour or whether to have shaker-profile doors, answer these questions:

Materials — painted MDF vs solid wood

Painted MDF is the industry standard for alcove units and for good reason: it takes paint beautifully, does not shrink or warp seasonally, and costs less than solid timber. Most alcove units in UK living rooms are painted MDF — and if the paint is applied well, the result is indistinguishable from solid wood at normal viewing distances.

Solid oak and walnut are genuinely beautiful and genuinely more expensive — typically 40–60% more. They also require more maintenance (re-oiling over time) and move slightly with the seasons. In rooms where timber features are already a theme — oak floors, exposed beams, hardwood window cills — solid wood alcove units make sense. In rooms with a painted or contemporary aesthetic, MDF is the better choice.

One option worth considering: painted MDF carcass and shelves with a solid oak or walnut top shelf. You get the look of real wood at the most visible point (the display shelf) at a fraction of the cost of a full solid wood build.

The single pair vs whole chimney breast build

Many clients start with one alcove unit and plan to add the second later. In my experience, this rarely works out as intended — either the second unit never gets built, or it gets built by a different carpenter at a later date and the match is never quite perfect.

The most cost-efficient and visually coherent approach is to build both alcove units at the same time — and ideally to include the chimney breast shelf or media wall at the same time too. Building everything at once means consistent materials (same batch of MDF, same paint), consistent workmanship, and a single site visit rather than multiple. The saving on a combined build over separate builds is typically £400–£800.

How the measuring visit works

Every alcove is different, which is why a proper job starts with a measuring visit rather than a price over the phone. Expect it to take 30–45 minutes. I measure each alcove at several heights — top, middle, and bottom — because chimney breasts are almost never plumb. It is completely normal for an alcove to be 15–20mm wider at the ceiling than at the skirting, and the unit has to be designed around that, not around a single tape measurement.

The depth gets the same treatment: measured at both sides and the centre, at cupboard height and at shelf height. I also check what the wall is made of (solid masonry, dot-and-dab plasterboard, or stud), where the sockets and aerial points sit, how the skirting will meet the unit, and whether the floor is level — a floor that falls 10mm across the alcove changes how the plinth is cut. All of this ends up in the drawing, and the drawing ends up as a written fixed-price quote.

A carpenter who prices your alcove units from a photo and two dimensions is guessing. Sometimes the guess lands in your favour; more often it turns into “extras” halfway through the job. Insist on a site visit before you accept any figure.

Scribing — the difference between fitted and wedged in

Scribing is the technique that separates genuine built-in furniture from a box pushed into a gap. The panels of the unit are cut slightly oversize, then trimmed to follow the exact profile of your walls — every bump in the plaster, every lean in the chimney breast. Done properly, the unit meets the wall with no gap at all, and no bead of decorator's caulk trying to hide a 10mm wedge of shadow.

This matters more in alcoves than anywhere else, because the unit is bordered by wall on three sides. In a Victorian or 1930s house the alcove walls can be out by 20mm or more over their height. In newer houses the walls are straighter but rarely perfect. Either way, scribing is where the hours go on an alcove job — and it is a large part of what you are paying for compared with a freestanding cabinet.

What happens on build day

Most of my alcove units are cut and part-assembled before I arrive, so build day is about fitting, not starting from scratch. The typical sequence: dust sheets down and the working area protected; the old shelving or unit stripped out if there is one; battens fixed level to the walls; the carcass fitted and scribed; face frames, doors, and shelves fitted and adjusted; then filling, sanding, and priming. Painting follows once the primer has cured, which is why a “1–2 day” job often has a short return visit for the final topcoat.

You do not need to move out or even leave the room empty — just clear the alcoves and a couple of metres in front of them. There will be some noise (chop saw, drill, pinner) and some fine dust despite extraction. A tidy carpenter leaves the room swept and sheeted down each evening; if a day-one visit leaves your carpets covered in MDF dust, that tells you something about how the rest of the job will go.

Brush or spray — how the paint finish is done

The paint system on a quality alcove unit is always the same shape: one coat of a dedicated MDF primer, then two topcoats, with a light sand between coats. What varies is how it is applied. A brushed finish in a good water-based eggshell, laid off carefully, gives a soft hand-painted look that suits period homes — and it is easy to touch up in years to come. A sprayed finish gives a flatter, factory-smooth surface that suits contemporary rooms, but it usually means the doors are finished off-site and any future touch-up needs the same kit.

Neither is “better” — they are different looks. What is non-negotiable is the primer. MDF edges are absorbent, and paint applied straight onto bare board will look fine for a month and patchy within a year. When comparing quotes, ask specifically what the paint system is; “painted” can mean anything from one rushed coat to a proper three-coat system.

How to compare alcove unit quotes

If you get three quotes for the same pair of alcove units, do not expect them to describe the same job. Cheaper quotes are usually cheaper because something has been quietly left out. Before comparing the bottom-line figures, check each quote covers the same ground:

• Materials — is it moisture-resistant (MR) MDF at 18mm, or thinner standard board? MR MDF machines cleaner, holds screws better, and is the right choice anywhere near an external or chimney wall.
• Painting — included or not? A proper primer-plus-two-topcoats finish is a meaningful slice of the job. Some quotes exclude decorating entirely and it is easy to miss.
• Hardware — soft-close hinges as standard, or basic butt hinges? Adjustable concealed hinges cost more but let doors be re-aligned perfectly for years.
• Scribing and infills — does the quote mention fitting to the walls, or is it a box with caulked gaps? Ask how they handle out-of-plumb walls.
• Making good — who fills and paints where old units or shelves came off the wall?

A written, itemised, fixed-price quote answers all of this on paper. If a quote is one line and one number, ask for the detail — a good tradesperson will not mind.

Common mistakes to avoid

The mistakes I get called in to fix are rarely about workmanship — they are about decisions made too quickly at the design stage. Uniform shelf spacing is the most common: five identical gaps looks logical on paper and lifeless on the wall, and it never suits what you actually own. Decide what lives on each shelf first, then set the heights. Second is forgetting ventilation and cables — a games console or router shut in an unventilated cupboard runs hot, so ask for vent slots or a mesh panel and cable routes drilled before assembly, not after.

Third is skipping the plinth decision. A unit sitting on a plinth that matches your skirting height (typically 100–150mm) reads as original to the house; a unit that lands straight on the carpet reads as furniture. And finally, painting the units the same colour as the walls versus a contrast is worth deciding before the quote — colour-drenching alcove units into the wall colour is popular and slightly cheaper, since the decorator can do walls and units in one pass.

Looking after alcove units

A painted MDF alcove unit needs almost no maintenance: dust the shelves, wipe the doors with a damp (not wet) cloth, and avoid harsh cream cleaners which dull the sheen. Soft-close hinges have adjustment screws, so if a door drops a millimetre over the years it is a two-minute fix, not a fault. Expect to want a refresh coat of paint on the most-handled areas — door edges, around handles — after eight to ten years of family use, which is a light sand and one topcoat, not a re-build. A solid oak top shelf wants a wipe of oil once a year or so to keep its colour even.

Frequently asked questions