The short answer
Plastering a small bedroom in the UK typically costs between £350 and £700, depending on whether you are doing the walls only or walls and ceiling, and whether the surfaces just need a skim or a full re-plaster. A small box room with sound walls that only need skimming is often around £350 to £550, and a single plasterer can usually complete the walls and ceiling in a day. Adding the ceiling, or finding that the old plaster is blown and needs hacking off and rebuilding with a backing coat, pushes the figure towards the upper end or beyond. Because a small room carries a similar set-up cost to a larger one, the price per square metre can feel higher than for a big room, so skimming a small bedroom is rarely as cheap as the floor area alone suggests.
A small bedroom is one of the most common single-room plastering jobs — a box room, a nursery being prepared, or a small double being refreshed. Size helps, but condition and whether the ceiling is included matter just as much.
Cost to plaster a small bedroom
- Skim walls only£300–£500
- Skim walls and ceiling£350–£600
- Full re-plaster (float and set)£550–£900
- Typical time1–2 days
- NoteSmall rooms cost more per m²
What a small bedroom usually costs
For a typical box room or small double, the cost comes down to two questions: what surfaces, and what condition. As a guide:
- Skim walls only: the lower-cost option, refreshing sound walls so they are flat and paint-ready. Often a comfortable one-day job for a single plasterer.
- Skim walls and ceiling: adding the ceiling pushes the cost up, because overhead work is slower, but for a small room it usually still fits within a day or so.
- Full re-plaster: where old plaster is blown, damp-affected or being taken back to brick, each surface needs a backing coat plus a finish. That roughly doubles the labour and is the most expensive route for the room.
A small room also has a practical quirk: the fixed costs of turning up, setting up, mixing and protecting the space are similar whether the room is small or large. That is why a box room can cost more per square metre than a big living room, even though the total is lower.
| Small bedroom job | Typical UK cost | Rough time |
|---|---|---|
| Skim walls only | £300–£500 | About 1 day |
| Skim walls and ceiling | £350–£600 | 1–1.5 days |
| Full re-plaster, walls and ceiling | £550–£900 | 2–3 days |
Indicative UK figures for guidance only. Sources: Checkatrade and MyJobQuote cost guides. Condition, ceiling and prep change the price.
What changes the price
Within those ranges, the factors that move a small-bedroom quote are the same ones that affect any room, just on a smaller canvas:
- Walls only or walls and ceiling: the ceiling adds a meaningful amount because overhead work is slower.
- Condition of the plaster: sound walls that skim are the lower-cost end; blown or damp-damaged plaster that must be removed and rebuilt is the most expensive.
- Preparation: stripping wallpaper, removing old coving, scraping flaking paint or treating artex all add time before plastering starts.
- Built-in furniture and fittings: wardrobes, radiators, a boxed-in boiler or fitted units that have to be worked around slow the job.
- Access and clearing: a cleared, empty room is quicker than working around a bed and furniture.
- Region: day rates and prices are typically higher in London and the South East.
Skim or re-plaster for a small room?
For most small bedrooms in habitable condition, a skim is all that is needed — the existing plaster is sound and just needs renewing for a flat, paint-ready finish. A full re-plaster is only warranted where the existing surface has failed:
- Choose a skim where the walls are sound, reasonably flat and free of damp — by far the most common case, and the lower-cost option.
- Choose a re-plaster where the plaster is blown (sounds hollow when tapped), badly uneven, or has been damaged by damp that has since been resolved. Here the failed plaster is hacked off and the wall rebuilt with a backing coat and a finish.
A reputable plasterer will tap and inspect the walls and recommend the lighter, lower-cost option where the surface allows it, rather than re-plastering unnecessarily. If damp has been involved, the wall needs to be dry and the source fixed before plastering, or the new finish will blow. When comparing quotes for a small bedroom, confirm whether each is a skim or a re-plaster, whether the ceiling is included, and what prep is covered — those three things explain most of the difference between a low and a high quote.
A small bedroom also has a few quirks that affect the job. Box rooms are often the most cluttered with fixed obstacles relative to their size — a boiler cupboard, a bulkhead over the stairs, fitted wardrobes, or a window in an awkward corner. Each of these means more cutting-in and careful work around edges and reveals, which slows a plasterer down more than the small floor area suggests. If you can remove fitted units or at least clear access to the walls before the plasterer arrives, the job runs faster and the finish around those areas is usually neater.
If the room is being prepared as a nursery or for someone who will move in soon, plan the timing around the drying as well as the plastering. A freshly plastered small room can hold a surprising amount of moisture while it dries, and sealing it up too soon — closing the door, putting furniture against the walls, or decorating before the plaster has gone uniformly pale — slows drying and risks patchy paint. Keeping the room gently warm and ventilated while the plaster dries, then starting with a thinned mist coat, gives the best result and avoids having to redecorate later.
Frequently asked questions
Can a small bedroom be plastered in a day?
Often, yes. A skim of the walls and ceiling in a small box room is commonly a one-day job for a single plasterer on sound surfaces. A full re-plaster with a backing coat takes longer — typically two to three days — and any heavy preparation such as stripping several layers of wallpaper adds time before plastering can start.
Why does a small room cost more per square metre?
Because the fixed costs of the job — travelling, setting up, mixing, protecting the room and cleaning down — are similar whether the room is small or large. Those costs are spread over fewer square metres in a small room, so the per-metre rate is higher even though the total bill is lower than for a big room.
Do I need to plaster the ceiling as well as the walls?
Only if the ceiling needs it. If the ceiling is sound and flat, you can plaster the walls only and leave the ceiling, which keeps the cost down. If the ceiling is cracked, artexed or being refreshed at the same time, including it gives a uniform finish but adds to the price, as overhead work is slower than plastering walls.
Sources & further reading
Figures on this page are typical UK ranges drawn from published sources and depend on your specific room. They are guidance, not a quotation.