The wrong hourly cost
Counting only wages means forgetting the van, the insurance, the yard, the tools — and the hours you pay for but never bill. A three-person business with £18,000 of monthly costs really costs £49.46 an hour.
For building trades
Stop finding out your margin when the job is over.
Analyse your quote before you sign it, and watch your margin while the work is under way.
- 14-day free trial
- Nothing to install
- Alongside your quoting software
Bathroom refit — the TaylorsSigned quote · £18,500 excl. tax
TightBefore signing
23.4%planned margin · £4,329
You have about 11 h of safety margin before falling below your 20% target margin.
Step 1 of 5
- 1 minto log a day on site
- 5margin levels, each one explained
- 6overruns tested in one click
- 13building trades recognised
- 0software to replace
The problem
On the quote, everything pays. On site, the margin quietly melts away.
One more day, a box of broken tiles, a subcontractor who revises his price: each gap looks small. Added up, they eat the margin. And you only see it at the end, when it is too late.
What you live with today
- Quotes are priced by feel, with an hourly cost that forgets the van, the insurance and the hours you never bill.
- During the job, nobody compares the hours spent with the work actually done.
- Extra work gets done “as a favour”, and is never charged at the right price.
- The margin shows up in the accounts, when there is nothing left to save.
What ChantierMargin changes
- Before signing: the margin, the minimum price and how much the quote can absorb, in hours and in money.
- Every evening, one minute on the phone: hours, purchases, progress.
- As soon as the job starts to slip, you know: the projected final margin, and why it is falling.
- The exact price of the variation that keeps your margin, before you say yes.
Your real hourly cost
Vans, insurance, yard, tools, unbilled hours: everything is counted.
A decision, not a table
Every screen starts with a sentence that tells you what to do.
Exact, every time
Precise calculations, identical every time, never estimated.
Nothing to install
A browser is all you need: computer, tablet or phone.
Where your margin goes
Three leaks nobody sees
Examples calculated by ChantierMargin, for a three-person business.
Hours that slip away
On a bathroom sold for £18,500, 72% of the hours are gone for 58% of the work. At the current pace: 18 h more, which is £996.05 less margin.
Extra work
A shower tray added along the way: 6 h and £380 of materials. To keep a 20% margin, it must be charged at least £887.50 — not “a little favour”.
How it works
From the quote to the last hour on site
On day one, an assistant sets your real hourly cost. After that, four moments, none of which needs any training.
- 1Before signing
Analyse the quote
The price, the planned hours, the purchases — one amount per type is enough. ChantierMargin immediately shows the margin, the minimum price and the safety margin, then tests ordinary overruns: one more day, 10% more materials…
- The safety margin, in hours and in days of hire
- The minimum price for your target margin
- The overrun that would tip everything over
- 2During the job
Log it in a minute
In the evening, on the phone: the team’s hours, the day’s purchases, progress. Your team can log too, from their own accounts — without ever seeing your prices or your margins.
- “+ 1 day”: hours in one tap
- An expense in two taps
- Progress with your thumb
- 3When it slips
See the final margin, and why
ChantierMargin compares the hours used with progress and projects the final margin at the current pace. It tells you what is pulling it down and what to do: the price of the variation, the hours left to finish at your margin.
- Initial, current and projected final margin
- Every loss tied to its cause
- An alert, always with its action
- 4Every week
Steer all your jobs
The dashboard answers four questions in ten seconds: which jobs are making you money, which are drifting, why, and which need your attention.
- The projected margin of every job in progress
- Recurring causes, costed
- One line per job that needs your attention
Features
Everything to protect your margin. Nothing else.
Everything is included in the subscription. Nothing unlocks by paying more.
Live quote analysis
The margin, the mark-up and the minimum price appear as you type.
The stress test
One more day, 10% more materials, one more day of hire: one click, and you see what would be left.
The buffer in hours
How many hours the job can absorb before falling below your target margin.
Logging on site
Hours, purchases, progress: with your thumb, in under a minute.
The projected final margin
Hours used against work done: ChantierMargin projects the finish, and warns you when the job starts to slip.
Why my margin is falling
Labour, materials, subcontracting, hire: every loss tied to its cause.
Variations at the right price
The minimum price for extra work, and a summary to copy into your quote.
Your real hourly cost
An assistant works it out in a minute, from your business’s costs.
The whole team
One account per team member, at no extra cost. They log; they never see your prices or margins.
Try it now
Analyse a quote, no account needed
This is ChantierMargin’s own engine, not an animation: change a figure and everything recalculates.
Try it
Your quote, in seven figures
Replace the example with one of your own quotes: the analysis follows instantly. Target margin: 20%.
Tight margin
TightYou have about 11 h of safety margin before falling below your 20% target margin.
A rise of more than £629 in materials would take this job below your target margin.
What if the job overruns?
A 10% rise in materials would take you below your target margin.
Twelve jobs from a fictional renovation business, free to explore. No sign-up.
Why ChantierMargin
A specialist, not one more management system
Four choices we stand by: they explain why the software is so simple.
Alongside your quoting software, not instead of it
ChantierMargin does no quotes, invoices, accounting or scheduling. You keep your tools; it answers a single question: “Is this job really going to make me money?”
Exact calculations, never guessed
Every figure is calculated to the penny, the same way every time, and checked by automated tests with every new version. No hidden estimates.
Your prices stay yours
Hosted in Europe, kept separate business by business, never sold. Your team logs without seeing your prices or your margins.
A real person on the line
A doubt about a setting, a question about a figure: call or message us on WhatsApp, and you talk to someone who knows the software.
Who it’s for
Designed for building trades
From the sole trader to the business with twenty on site.
The sole trader
You price it, you do it, you invoice it. ChantierMargin tells you before signing whether the price holds, and warns you if the job slips.
Businesses of 2 to 20 people
Everyone logs their own hours and purchases. You see at a glance which jobs are slipping.
Every trade
Plumber, electrician, tiler, bricklayer, painter and decorator, drywall installer, joiner… 13 trades recognised, each with its own cost categories.
Pricing
One subscription, everything included
All the features, the whole team, no set-up fees. ChantierMargin costs less than one hour on site a month.
Monthly
€39excl. tax
per month
No commitment: stop whenever you like.
14-day free trial
Start the free trialAnnual
€390excl. tax
per year
That’s €32.50 excl. tax a month: €78 saved over the year.
14-day free trial
Start the free trialIncluded in the subscription
- All the features
- Accounts for the whole team
- The demo job
- Updates
- Hosting in Europe
- Help setting your hourly cost
- Support by phone and WhatsApp
- English and French, in euros, pounds or dollars
What ChantierMargin doesn’t do
Quotes, invoicing, accounting and scheduling: ChantierMargin works alongside your tools, without replacing them. There is nothing to transfer to it.
Prices excluding tax. Billed in euros: at checkout, Stripe can show the amount in your currency.
Questions
What tradespeople ask us
Do I need to change my quoting software?
No. ChantierMargin does no quotes or invoices: it works alongside your current software. You only enter the price, the planned hours and the purchases from the quote — one amount per type is enough.
I don’t know my real hourly cost.
Neither do most tradespeople. An assistant works it out in a minute from your monthly costs — wages, vans, insurance, yard, tools — and shows you the calculation, so you can check it yourself.
How does ChantierMargin know a job is slipping?
It compares two things you log: the hours used and progress. When 72% of the hours are gone for 58% of the work, the current pace leads to an overrun: ChantierMargin projects the final margin and warns you, with what to do.
How long does it take?
Two minutes to analyse a quote, one minute a day to log the job. Nothing else: no customers to create, no catalogue to import, no accounts to connect.
Can my team log their hours?
Yes, at no extra cost: each person has their own account to log hours, purchases and progress from their phone. They never see your prices, your costs or your margins.
What about extra work?
Price them as a variation: ChantierMargin gives the minimum price that keeps your margin, and a summary to copy into your quoting software.
Does it work on a phone?
Yes. ChantierMargin opens in the browser, on a computer, tablet or phone. Nothing to install, nothing to update.
Which languages and currencies?
ChantierMargin is available in English and French, and each business chooses its currency: euros, pounds sterling or US dollars. The subscription is billed in euros; at checkout, Stripe can show the amount in your currency.
Is my data protected?
It is hosted in Europe, and each business only sees its own: this is checked by tests with every new version. Passwords are never stored in plain text, and your data is never sold.
How does the free trial work?
For 14 days, you use the full ChantierMargin with no limits. If it’s not for you, cancel during the trial and you pay nothing.
Can I cancel my subscription?
Yes, at any time: the monthly subscription has no commitment.
Who is behind ChantierMargin?
ChantierMargin is designed and published by MAS_DATA Solution, in Nice, France. When you call, we answer.
Contact
Let’s talk about your jobs
Tell us which jobs you do most. We’ll show you ChantierMargin with your own quotes.
- You write to usBy WhatsApp, by phone or with the form.
- We look at one of your quotes togetherOn the phone or by video call, with your real figures.
- You start the trial14 days free, with your hourly cost set up with you.
Your next quote, analysed before you sign it.
14-day free trial, no commitment, nothing to install.