Not last month. Not at final account. Right now.
If you hesitated, you're not alone. Most contractors I speak to can't answer that question. And it's costing them a fortune.
The construction industry runs on margins so thin they'd make a restaurant owner wince. And at those margins, you don't have the luxury of finding out you lost money after the job is done.
The real problem isn't that contractors are bad at building. It's that they're flying blind on the financials. The decisions that killed your profit were made weeks ago, and nobody flagged them because nobody could see them.
The Spreadsheet Trap
Let me paint a picture you'll probably recognise.
Your commercial manager has a spreadsheet. It's a big one. Colour-coded tabs, formulas linking to other formulas, maybe even some macros if they're fancy. It gets updated... when there's time. Which means monthly. Sometimes quarterly.
Meanwhile, the project is burning through cash every single day.
"How are we 8% over on labour?"
"When did materials jump by £40k?"
"Why wasn't this flagged earlier?"
The answer is always the same: because nobody could see it in time.
This isn't a people problem. Your PMs and QSs are busy running jobs. The problem is the system — or more accurately, the lack of one. Spreadsheets were never designed to give you real-time visibility into project financials. They're static. They rely on manual updates. They break.
✕ Without real-time tracking
- Cost reports are 3–4 weeks old
- Variations captured late or not at all
- Labour overruns spotted at month-end
- Decisions based on gut feel
- Problems found after the damage is done
✓ With real-time tracking
- Live view of budget vs actual
- Variations flagged and costed immediately
- Labour tracked daily against estimate
- Decisions backed by live data
- Problems caught while you can still act
What "Real-Time" Actually Means
Let me be clear, because "real-time" has become a buzzword. I don't mean a fancy dashboard that updates once a month with the same stale data. That's just a prettier spreadsheet.
Real-time means you can open your laptop — or your phone — and see three things:
Where you are right now. Actual costs versus your current budget, with all approved changes reflected.
Where you're heading. A data-driven forecast of final cost and margin that updates as new information comes in.
Where the problems are. Which cost categories are over, which subs are running hot, which phases are eating your margin.
That's the standard you should be aiming for. And it's not as hard to achieve as most people think.
The Five Things You Need to Track
Miss any one of these and your picture is incomplete.
Labour Costs — Fully Burdened
Labour is typically 20–35% of total project cost and the most volatile. Your real cost includes wages, employer's NI, pension, insurance, travel, and overtime. A 4–5% increase in labour — happening right now with the skills shortage — can wipe out nearly a full point of margin.
Materials & Procurement — Committed, Not Just Invoiced
If your QS has issued a PO for £200k of steelwork, that money is committed even if it hasn't hit your account. Your cost report needs committed costs, not just invoiced costs. Otherwise your project looks healthier than it is.
Subcontractor Costs & the Recovery Gap
Track their contract value, variations, applications, and certifications. Most importantly, track the gap between what they're claiming and what you're recovering from the client. That gap is where margin disappears.
Change Orders & Variations
The silent killer. Every piece of extra work that doesn't get captured as a variation is money you'll never recover. The most disciplined contractors treat variations like oxygen — nothing gets done without a formal instruction and approval.
Revenue & Cash Position
You can be profitable on paper and still go bust. Track what you've valued, applied for, certified, and received. The gap between "earned" and "received" is where cash flow problems live.
The Cost of Finding Out Too Late
Let me put some numbers to this. Say you're running a £5 million project at a target margin of 8%. That's £400,000 of profit.
£145,000 in margin erosion. Your 8% margin just became 5.1%. That's a 36% reduction in profit — and not one of these problems would have triggered an alarm on its own.
This is what happens when you don't have real-time visibility. The problems are small, gradual, and by the time they show up in a monthly report, the damage is done.
How to Build a Real-Time Tracking System
You don't need a £100k ERP system. You don't need a team of data analysts. What you need is a clear structure, the right connections between your data sources, and a reporting layer that brings it all together.
Get your cost breakdown structure right
Before you track anything, you need a consistent way of categorising costs across all projects. Labour, materials, plant, subcontractors, prelims, overheads. The key word is consistent. If every PM codes costs differently, you'll never compare projects or spot trends.
Connect your data sources
Your cost data lives in multiple places — accounting, payroll, procurement, subcontractor applications, site diaries. The goal is to get all of it flowing into a single reporting layer without manual re-entry. This is where tools like Power BI become incredibly powerful.
Build three levels of reporting
Project-level: Budget vs actual vs forecast for every cost category. Updated weekly minimum.
Portfolio-level: All projects on one screen. Traffic light status for your MD.
Trend-level: Performance over time. Are estimates improving? Which work types are most profitable?
Set triggers and thresholds
This is the real power. If any cost category exceeds 90% of budget with 20%+ of work remaining — flag it. If forecast margin drops below target by more than 2 points — escalate. Turn your data from a rear-view mirror into a windscreen.
Make it part of the rhythm
Technology alone doesn't fix anything. You need a commercial rhythm — weekly cost reviews, monthly deep dives, quarterly strategic reviews — where this data is the foundation. When teams know the numbers are visible, behaviour changes.
What Changes When You Get This Right
The contractors who implement real-time tracking don't just avoid losses. They fundamentally change how their business operates.
from real-time cost visibility
from integrated time tracking
on a £20M turnover business
They bid more accurately because they have historical data showing exactly where costs land versus estimates.
They negotiate better because they can show clients and subcontractors exactly where costs sit, backed by data.
They make faster decisions because when a problem emerges on a Tuesday, they can act on it by Wednesday — not wait three weeks for a report.
They retain better people because good PMs and QSs want to work for businesses that give them proper tools. Nobody enjoys being set up to fail with outdated spreadsheets.
On a £20 million turnover business, a 15–20% margin improvement means potentially £600,000 to £800,000 in additional profit per year. That's not theoretical — that's what happens when you stop flying blind.
Where to Start
If you're reading this and thinking "this sounds great but I don't know where to begin," here's my advice: start with one project.
Pick a live project. Map out where your cost data comes from. Identify the gaps. Build a simple dashboard that pulls actuals against budget. Get your PM and QS using it for a month.
You'll learn more from that one exercise than from six months of evaluating software.
Your margins are too thin to guess.
We help contractors go from month-end surprises to real-time confidence. From spreadsheet chaos to dashboards that drive decisions.
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