How to Price a Plastering Job in the UK

To price a plastering job, measure the surfaces, inspect the existing background, choose the right plastering system and calculate the labour, materials, other job costs, overheads and profit. Then turn the result into a written quotation that makes the work, exclusions and total price clear.

A square-metre rate is a useful cross-check, not a substitute for surveying the job. Skimming a clear, sound wall is different from working around furniture, repairing failed plaster or boarding a difficult ceiling.

Build the price from your costs

Start with the work you will actually carry out, rather than choosing a rate you have seen online and hoping it covers everything. Your internal calculation should include:

• Labour: preparation, boarding or repairs, plastering, clean-up and any return visits. If you work alone, include an allowance for your own paid time.
• Materials: plaster, boards where required, beads, tape, suitable background treatment, fixings and protection.
• Job expenses: delivery, parking, travel, waste disposal and access hire.
• Overheads: your share of insurance, tools, vehicle running costs, administration and other business expenses.
• Profit: an amount above those costs to reward the business for doing the work and taking the risk.

Keep these figures in your working notes even if the customer receives one fixed total.

Price per m², day rate or fixed quotation?

For most straightforward domestic jobs, calculate the labour and materials internally and offer a fixed price for an agreed scope. You can still divide that price by the measured area afterwards to check your effective plastering rate.

What do UK plastering rates tell you?

Published prices help you sense-check a quotation, but they do not tell you what your job will cost. Check whether a rate covers walls, ceilings, preparation, materials, waste disposal and VAT before comparing it with your own.

For example, Which? reports the following guide prices from a November 2025 survey of nine Trusted Traders:

These figures include labour and materials but exclude VAT; waste removal may be extra. They are broad consumer estimates from a small survey, not a schedule of rates for contractors.

Checkatrade's plastering cost guide also gives an indicative £24/m² for skim plastering and £300 per day for plasterer labour. Its estimates are ballpark figures, so check the specified inclusions rather than using either number as a guaranteed local rate.

Your strongest benchmark is the time and money recorded on your own completed jobs. Compare similar rooms, finishes and access conditions, then adjust your future prices when the actual results differ from your estimate.

Survey the work and choose the right system

“Plaster the bedroom” is not a sufficient specification. Identify the background, its condition and exactly what you propose to do.

Check for loose or hollow plaster, cracks, high or uneven suction, damp staining, wallpaper residue, old repairs and changes in substrate. Do not assume that applying a bonding agent makes an unsound background suitable for skimming.

Price ceilings separately in your labour calculation. Working overhead, negotiating light fittings and using a platform may reduce output. For stairwells and high walls, plan safe access and include any equipment hire and handling time.

Where damp, movement or hidden damage needs investigating, state what has been excluded. Do not offer a cosmetic fix as though it resolves the underlying problem.

Older buildings need an additional safety check. Before disturbing suspect textured coatings or other materials that may contain asbestos, establish what is present and arrange the necessary assessment. The Health and Safety Executive advises workers not to start disturbing suspected asbestos-containing materials until the risks have been assessed.

Measure walls, ceilings and materials

For a rectangular room with a level ceiling:

• Gross wall area = 2 × (room length + room width) × wall height
• Ceiling area = room length × room width
• Net area to skim = gross area − openings + reveals and other surfaces being plastered

Measure each wall individually if the room is irregular. For materials, deduct the openings you will not cover and add the actual depth and lengths of window or door reveals you will plaster. Record beads in linear metres rather than treating them as extra flat-wall area.

Do not overlook labour for edges, corners, chases and tight spaces. A window reduces the flat plaster area but introduces detailed finishing work.

Estimate the number of plaster bags

Use the manufacturer's coverage for the specific product and thickness you intend to apply:

Bags required = (area to plaster + extra area allowed for wastage) ÷ coverage per bag

For example, for 50 m² with a 10% wastage allowance, add 5 m² before dividing by the coverage per bag.

Round up to whole bags. Calculate any backing or bonding plaster separately because the coat thickness and coverage are different.

As a concrete example, British Gypsum's Thistle MultiFinish product data sheet states 10 m² per 25 kg bag at 2 mm thickness. This is not a universal coverage figure for every finishing plaster or background. Check that the chosen product and its preparation requirements suit the job.

If you are fixing plasterboard, draw up a board layout using the specified sheet sizes. Allow for cuts and waste, fixings, joint treatment and any assistance needed to handle boards safely.

Allow for the time a metre rate can miss

Estimate labour by task, not just by how quickly you can get plaster onto a wall. Record time for bringing materials in, protecting floors, moving around occupied rooms, preparing surfaces, mixing, applying each coat, washing tools and clearing away.

Include travel, collections and extra visits where necessary. Unattended drying time is not labour time, but it may still affect your programme or require a return journey.

For small patches, consider a minimum attendance charge based on the actual time and expense involved. A one-square-metre repair may need almost the same setup and clean-down as a larger area.

Overheads, markup and margin

Recover business overheads consistently. For example, allocate a sum per billable site day, or include that recovery in your labour selling rate — not both, or you will double-count it.

Markup and profit margin are different:

• Selling price with 20% markup: £100 cost × 1.20 = £120.
• Profit margin on that sale: £20 ÷ £120 = 16.7%.
• Selling price for a 20% target margin: £100 ÷ 0.80 = £125.

Use a cost base that includes your own labour allowance and the expenses you need to recover before applying a chosen markup or target margin.

VAT: check the customer and project

For ordinary standard-rated domestic plastering, a VAT-registered contractor normally adds 20% VAT. A contractor who is not VAT-registered must not add VAT to their invoice and should include irrecoverable VAT on purchases in their costs.

Not all construction work follows that simple example. Qualifying new-build or renovation work may have different VAT treatment, and the domestic reverse charge can apply to certain VAT-registered business-to-business construction supplies within the Construction Industry Scheme (CIS). Check HMRC's construction VAT guidance and reverse-charge rules for the actual project. Do not automatically add 20% to every subcontractor quotation.

Worked example: pricing a bedroom skim

This is a fully illustrative quotation, not a claim about an average market price. It assumes a VAT-registered plasterer quoting a homeowner for standard-rated work, with recoverable input VAT and sound existing gypsum plaster. Replace the labour, merchant prices and allowances with your own figures.

1. Define and measure the job

The bedroom measures 4 m × 3 m, with a wall height of 2.4 m. The work is to skim the walls and ceiling, protect the room, carry out minor agreed preparation and clean down.

There is one 0.9 m × 2.1 m door and one 1.5 m × 1.2 m window. The window has 150 mm-deep reveals to both sides and across the head; the sill is excluded. The door reveals are excluded because the plaster stops at existing architraves.

Keep the unrounded measurement for the material calculation. Using the 10 m² per 25 kg bag coverage specified above and an illustrative 10% waste allowance:

42.495 × 1.10 ÷ 10 = 4.67445 bags, rounded up to 5 bags.

The survey also identifies 12 linear metres of new/replacement beading around agreed exposed or damaged edges, allowing for cuts. This is a job-specific assumption, not an allowance every bedroom will need. If the existing beads are sound and retained, remove this item and recalculate.

2. Build up your internal costs

The example allows £200 per working day for the plasterer's own site time before overhead recovery and profit. Materials and expenses are shown excluding recoverable VAT.

That is 2.5 working days of labour costing £500, plus £200 of non-labour direct costs. It assumes no hired access equipment, extensive repair work or separate return visit.

Allow £30 overhead per site day: 2.5 × £30 = £75.

The £155 is profit after allowing for the plasterer's own £500 labour and £75 allocated overhead. It is a 16.7% profit margin, not a 20% margin.

The job's effective selling rate is £930 ÷ 42.495 m² = about £21.88/m² excluding VAT. This includes both walls and ceiling, preparation, materials and the other stated allowances; it should not be compared with labour-only rates.

3. Present the customer quotation

The cost build-up stays in your records. A customer-facing quotation might show the following selling prices, with overhead and markup allocated across the lines:

You can use Quote Forge to present these selling prices in a branded, itemised PDF quotation.

State the assumptions beside the quote: room cleared before arrival; water and power available; existing plaster sound; only minor agreed repairs included. Exclude extensive loose-plaster removal, boarding, damp treatment, electrical work and decorating unless separately priced. Obtain approval before carrying out additional work.

Price lime plastering as a different specialist job

Traditional lime plastering is not interchangeable with a gypsum skim. In older buildings, assess the retained material, background, moisture behaviour, appropriate coat sequence and compatibility of finishes before selecting a system.

Allow for specialist materials and skills, coat thickness, protection, curing conditions and possible return visits. Do not copy a gypsum square-metre rate and simply add a percentage.

Historic England advises that removal of historic lime plaster is rarely justified solely because it has become wet. Local compatible repairs may be preferable to wholesale removal. If the building is listed or the specification is uncertain, obtain appropriate conservation advice before pricing replacement.

Put the price and scope in writing

A useful plastering quotation should identify the customer and address, the rooms and surfaces, the selected system, preparation, materials, finish, price and applicable VAT treatment. Include an issue date, a validity period, likely start arrangements, payment terms and specific exclusions.

Be clear about quotation versus estimate: a fixed quotation commits you to a stated price for a defined scope, while an estimate indicates a likely cost that may require further investigation. Neither should be used to obscure known uncertainties.

Set out how changes will be approved. If stripping a patch exposes more damage than expected, document the findings, explain the extra cost and obtain agreement before proceeding beyond the original scope.

Once you have worked out the price, Quote Forge can help you turn your own calculations into a branded, itemised PDF quotation. You can save and reuse common line items and review the totals before downloading the PDF. It does not automatically survey or price a plastering job for you.

Frequently asked questions

Should I deduct doors and windows when pricing plastering?

For a material take-off, deduct openings that will not be plastered and add any reveals you will finish. For pricing labour, allow separately for the edges, corners and detail work that those openings create.

How much should I charge for skimming a room?

Start with the measured area, existing condition, materials, realistic working time and business costs. In the illustrative bedroom above, the price is £930 excluding VAT for walls and ceiling, but a different room or plastering system may require a substantially different price.

How should I quote for plaster repairs when damage is hidden?

Define and price a limited investigation or state an agreed provisional allowance. Once the affected area is exposed, give the customer a revised price for any additional work before carrying it out.