Project-Based vs Day-Rate vs Per-Square-Metre Pricing: Which Model Works Best? featured image
Finance & Tax

Project-Based vs Day-Rate vs Per-Square-Metre Pricing: Which Model Works Best?

Real UK data on day rates, project pricing, and per-square-metre models across 10 trades. Includes a day rate calculator, regional multipliers, and advice from …

TrainAR Team 8 hrs ago 13 min read

Quick Answer

There is no single "best" pricing model. Project-based pricing gives your customers cost certainty and rewards fast, efficient work. Day rates protect you when scope is unclear or jobs are unpredictable. Per-square-metre pricing works brilliantly for trades with measurable outputs like plastering, tiling, and painting. Most experienced tradespeople use a hybrid: they calculate their day rate internally, estimate how long a job will take, then quote the customer a fixed project price. The model you choose should depend on your trade, the job type, and how confident you are in your estimates.

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Data-driven guides for UK trades and construction professionals. Published 13 March 2026.

9.5%
Average price increase expected by UK tradespeople in 2026
85%
Of tradespeople asked to reduce their prices in the past year
+35%
London premium over Midlands baseline day rates
43%
Rise in National Living Wage since 2021 (to £12.71)

The Numbers: UK Day Rates by Trade in 2026

Before you pick a pricing model, you need to know what the market is paying. These figures come from Checkatrade, Superscript Insurance, and ConcreteMath, cross-referenced against real forum discussions.

TradeDay Rate (Midlands)Hourly RateLondon Rate (+35%)
Electrician£250 – £400£35 – £60£338 – £540
Plumber / Heating£250 – £375£35 – £55£338 – £506
Roofer£220 – £350£30 – £50£297 – £473
Bricklayer£220 – £320£28 – £45£297 – £432
Carpenter / Joiner£200 – £320£28 – £45£270 – £432
Plasterer£200 – £320£28 – £42£270 – £432
Tiler£170 – £280£22 – £40£230 – £378
Painter / Decorator£160 – £280£20 – £38£216 – £378
Kitchen Fitter£180 – £300£25 – £40£243 – £405
General Labourer (CSCS)£100 – £160£12.71 – £18£135 – £216

Sources: ConcreteMath 2026, Superscript Insurance 2026, Checkatrade 2026

Regional multipliers matter

These Midlands baseline figures shift significantly by region. South East adds 22%, South West adds 10%, while the North East and Wales are 12% below baseline. A plasterer earning £280/day in Birmingham might get £340 in London but only £246 in Newcastle.

Project-Based Pricing: When Fixed Quotes Win

Project-based pricing means quoting one fixed price for the entire job. The customer knows exactly what they will pay, and you know exactly what you will earn. It is the most common model for domestic work in the UK.

How it works

You visit the site, assess the scope, estimate how long it will take, calculate your materials, add your margin, and present a single number. If the job takes less time than expected, you pocket the difference. If it takes longer, you absorb the loss.

The pricing formula

Total Price = (Day Rate x Estimated Days) + Materials + Overheads + Profit Margin (10-30%)

A kitchen fitter quoting a 5-day install at £300/day with £200 in materials and a 20% margin would quote: (5 x £300) + £200 + £360 margin = £2,060.

When project pricing works best

  • Repeatable jobs you have done dozens of times (bathroom fits, rewires, full decorations)
  • Well-defined scope that can be fully specified before work starts
  • Domestic customers who need cost certainty before committing
  • Competitive tenders where clients compare multiple quotes

When it backfires

  • Hidden problems behind walls, under floors, or in old wiring that blow your estimate
  • Scope creep from customers who add "just one more thing" without a change order
  • Underestimating complex jobs when you are new to a particular type of work
UK kitchen mid-renovation with half-fitted units and power tools
Kitchen installations are almost always quoted as fixed project prices, giving customers budget certainty before committing

Day-Rate Pricing: When Flexibility Matters

Day-rate pricing is straightforward. You charge a flat fee per day of work. The customer pays for your time regardless of how much gets done. It is the simplest model to understand and the hardest to get right.

How it works

You agree a daily rate with the client, show up, work a full day, and invoice for each day on site. Some tradespeople also offer half-day rates for smaller jobs. Travel time and setup are usually included in the day rate.

When day rates work best

  • Unclear scope where neither you nor the client knows exactly what is involved until you start
  • Maintenance and repair work where every job is different
  • Sub-contracting for other trades on larger builds
  • Trusted repeat clients who book you regularly

When day rates backfire

  • Customers watching the clock, questioning tea breaks, and feeling like they are being milked
  • Fast workers get punished. If you are brilliant and finish early, you earn less than someone slower
  • No incentive to be efficient from the client's perspective
Well-organised UK trade van interior with tools and copper pipes
Day-rate tradespeople need to factor in van costs, fuel, insurance, and dead time between jobs

Per-Square-Metre Pricing: The Measurable Model

Per-square-metre (or per-unit) pricing charges based on the quantity of work done. It is the standard in trades where output is measurable: plastering, tiling, painting, bricklaying, and roofing.

Current UK per-square-metre rates

Trade / Work TypeRate per m² (Labour Only)Typical Daily Output
Skim plastering£10 – £2020 – 35 m²
Floor tiling£20 – £458 – 14 m²
Wall tiling£30 – £606 – 10 m²
Painting (emulsion)£8 – £1850 – 80 m²
Bricklaying£150 – £3003 – 5 m² (250-400 bricks)
Flat roofing£45 – £100Varies by material
Laminate flooring£7 – £1520 – 40 m²
Extensions (full build)£1,300 – £2,500N/A (project basis)

Sources: Checkatrade, ConcreteMath, Buon Construction

Tradesperson measuring a plastered wall with a tape measure showing square metre markings
Per-square-metre pricing is standard for plastering, where output is easily measured and compared

When per-sqm pricing works best

  • Trades with measurable output: plastering, tiling, painting, bricklaying, flooring, roofing
  • Large, regular spaces where productivity is high and consistent
  • Repeat work where you know your output rate precisely
  • Quick quoting: measure the area, multiply by your rate, done

When per-sqm pricing backfires

  • Complex spaces with lots of cuts, corners, obstacles, and prep work
  • Small jobs where setup and travel time dwarf the actual measured work
  • Poor site conditions: old walls that need extra prep, uneven floors, limited access

The 1.5-day trap

Multiple tradespeople on Screwfix Community Forum independently flagged the same problem: a job that takes 1.5 days gets priced as 2 days of work on a fixed quote, but you might only charge for 1.5 days on a day rate. If you are fast, project pricing or per-sqm pricing will almost always pay better than day rate.

Side-by-Side Comparison: All Three Models

FactorProject-BasedDay RatePer-Square-Metre
Cost certainty for customer✓ High✗ Low✓ High
Risk if job overrunsYou absorb itCustomer absorbs itYou absorb it
Rewards fast work✓ Yes✗ No✓ Yes
Easy to quoteModerate (site visit needed)✓ Very easy✓ Easy (measure + multiply)
Scope creep protection✗ Needs change orders✓ Built in (extra days)Moderate (extra area = extra cost)
Best forKitchens, bathrooms, rewires, defined jobsMaintenance, unclear scope, sub-contractingPlastering, tiling, painting, flooring, roofing
Profit potential✓ Highest (if estimated well)Capped at day rate✓ High (scales with speed)

Day Rate Calculator

Use this calculator to work out what you need to charge per day to hit your target annual income. It accounts for non-billable days, holidays, and overheads.

What Should Your Day Rate Be?

£0
Required Day Rate
£0
Hourly Rate (8hr day)
0
Billable Days per Year

The Hidden Costs Most Tradespeople Forget

Your day rate or project price needs to cover far more than just your time on site. Here are the costs that eat into your margins if you do not account for them.

UK residential street at dusk with scaffolding, skip, and trade van
Scaffolding, skip hire, parking, and ULEZ charges can add hundreds to a job's true cost
CostTypical AmountHow Often
Materials markup10 – 20% (specialist 30-40%)Every job
ULEZ charge (London)£12.50/dayEvery London job
Parking£5 – £20/dayUrban jobs
VAT20%If VAT-registered
Weekend premium+25 – 50%Weekend work
Emergency call-out2 – 3x standard rateEmergency work
Travel surcharge£0.45 – £0.65/mileJobs beyond free radius
Skip hire£180 – £400Larger jobs
Scaffolding£150 – £300/weekExternal work

The 1% rule

Research from Small Business Insider found that a modest 1% price increase can boost profit by approximately 11% if your costs are already covered. Most tradespeople leave money on the table by not reviewing their rates annually.

Which Model for Which Trade?

There is no universal answer, but clear patterns emerge when you look at how each trade actually operates.

TradePrimary ModelSecondary ModelNotes
ElectricianProject / per-pointDay rate (larger jobs)Rewires quoted per-project; small jobs per-point (£65-70/point)
PlumberProject-basedHourly (small repairs)Bathroom installs always fixed price
PlastererPer m²Day rateSkim work almost always quoted per m²
TilerPer m²Day rateFloor tiling per m²; complex mosaic by day rate
Painter / DecoratorPer room or projectPer m² or day rateResidential per room; commercial per m²
RooferPer m² (flat) / project (pitched)Day rateFlat roofs suit m² pricing naturally
BricklayerDay rate or per 1,000 bricksPer m²Piecework (£0.50-1.00/brick) common on larger sites
CarpenterDay rate or projectPer linear metre (skirting)Kitchen fitting typically project-priced
General BuilderDay rateProject (extensions)Extensions always project-priced at £1,300-2,500/m²

What Tradespeople Actually Say

We searched Screwfix Community Forum, PistonHeads, BuildHub, and MoneySavingExpert to find real opinions from tradespeople on pricing models. Here is what they said.

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Our Verdict

The best pricing model depends on your trade, the job type, and your experience level. But the data points clearly in one direction: most successful tradespeople use a hybrid approach.

They calculate their day rate internally, estimate how many days a job will take, add materials and a contingency, then present the customer with a single fixed project price. This gives customers the certainty they want while protecting your margins.

Use project pricing for defined domestic jobs like kitchen installs, bathroom fits, and full decorations. Your profit margin grows with your speed and accuracy.

Use day rates for sub-contracting, maintenance work, and jobs where the scope is genuinely unclear. Protect yourself from the unknown.

Use per-sqm rates if you are a plasterer, tiler, painter, bricklayer, or flooring installer. It is transparent, fast to quote, and scales with your output.

Review annually. With 9.5% price increases expected across UK trades in 2026, your rates from last year are already out of date. Check the market, check your costs, adjust your prices.

Frequently Asked Questions

Day rates vary significantly by trade and region. In the Midlands (baseline), electricians charge £250-400/day, plumbers £250-375/day, carpenters £200-320/day, and painters £160-280/day. London adds approximately 35% to these figures. The national average across all trades sits around £200-300/day for qualified tradespeople.

For most domestic work, fixed project pricing is better. It gives customers cost certainty (which they prefer) and rewards you for working efficiently. Use day rates only when the scope is genuinely unclear, for sub-contracting, or for maintenance work where every job is different. Many tradespeople calculate their internal day rate but present customers with a fixed project quote.

Add your target annual income to your annual overheads (van, insurance, tools, phone, accountant). Divide by the number of billable days per year (typically 260 working days minus holidays, sick days, and non-billable admin days, leaving around 175 billable days). For example: (£45,000 income + £8,000 overheads) / 175 billable days = £303/day minimum.

Skim plastering typically runs £10-20 per square metre for labour only, depending on region and complexity. A good plasterer can cover 20-35m² per day. On easy newbuild walls, some plasterers earn well above their day rate on per-sqm pricing. On older properties with lots of prep work, the per-sqm rate may need to be higher or a day rate might be more appropriate.

Standard practice is 10-20% markup on materials for most trades. Specialist materials (underfloor heating, bespoke joinery, high-end tiles) may warrant 30-40%. This covers your time sourcing, transporting, and managing materials, plus the risk of wastage. Always itemise materials separately in your quote so customers can see the breakdown.

Yes, but adoption in UK trades is still early. Tools like CountBricks (from £25/month) use AI to generate quantity takeoffs from voice notes, while Kreo (£35/month) offers AI-assisted takeoffs with BIM support. For quoting and invoicing, Fergus (from £35/month) and Tradify (£34/month) include pricing templates with supplier price lists. These tools reduce quoting time, but your trade experience remains the most reliable pricing tool you have.

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