Introduction
On any construction project, the scope of work changes. Materials get substituted, designs are revised, unforeseen site conditions emerge, and clients request additions. Each of these events — if handled correctly — becomes a change order. And tracking those change orders accurately is one of the most commercially important tasks on any project.
This guide explains what construction change order tracking is, why it matters, how the process works, and what the best tools do to make it easier.
What Is a Change Order in Construction?
A change order (also called a variation order in UK construction) is a formal modification to a construction contract. It documents a change to the original scope of work — adding something, removing something, or changing the specification — along with any adjustment to the contract sum and/or completion date.
Change orders can arise from:
- Client instructions — the client or their representative instructing additional or different work
- Design changes — revisions to drawings or specifications issued during the build
- Unforeseen conditions — site conditions that differ materially from those anticipated at tender (ground conditions, contamination, hidden structure)
- Legislative changes — new building regulations or health and safety requirements that affect the work
- Contractor-proposed changes — value engineering proposals or alternative materials suggested by the contractor
Under most UK standard contracts (JCT, NEC), the process for raising, pricing, and agreeing change orders is defined by the contract terms. The key points are that changes must be instructed in writing, priced within a defined mechanism, and agreed (or at least notified) within specified timeframes.
What Is Change Order Tracking?
Change order tracking is the systematic process of recording, managing, and monitoring construction change orders from the moment they're first identified through to final agreement and inclusion in the payment account.
A change order tracking system — whether a spreadsheet or dedicated software — typically records:
- A unique reference number for each change order
- The date it was identified and the date of any formal instruction
- A description of the scope change
- The contract clause under which it is being valued
- The estimated and agreed cost impact
- The programme (time) impact
- The current status (potential, submitted, under assessment, agreed, disputed)
- The date it was included in a payment application
- The date and amount finally agreed at account settlement
Why Change Order Tracking Matters
Commercial protection
The most important reason to track change orders is money. Every untracked change is a potential loss — work that was done, wasn't in the original contract, and wasn't formally claimed. On a typical commercial construction project, the variation account can represent 10–20% of the contract sum. Unmanaged, a significant portion of that can be lost.
Legal compliance
UK construction contracts impose obligations on both parties when changes occur. The contractor typically must notify changes within a defined period (under NEC contracts, within 8 weeks of becoming aware). Failure to notify can extinguish the entitlement entirely. Change order tracking with deadline monitoring ensures these obligations are met.
Programme management
Many change orders affect not just cost but also time. A change that adds two weeks to a critical activity needs to be recorded as an extension of time claim, not just a cost claim. Tracking change orders without their programme impact means losing half the commercial picture.
Dispute resolution
Construction disputes most commonly arise in two areas: the final account and extension of time claims. In both cases, the party with the better records wins. Change order tracking creates the documentary foundation that any dispute resolution process — negotiation, mediation, or adjudication — depends on.
How Change Order Tracking Works in Practice
Step 1: Identify and log
When a change is identified — regardless of whether it's been formally instructed — it's logged in the change register. At this stage, only the basic information is needed: what changed, who identified it, when, and approximately what the impact might be.
The discipline here is logging early, not waiting for instruction or certainty. A potential change logged today is a claim that can be developed. A change dealt with informally and never logged is typically lost.
Step 2: Notify
If the contract requires notification within a timeframe, the clock starts from when the change was identified (or when the event giving rise to the change occurred). The change tracking system should calculate this deadline and alert the commercial team in advance.
Step 3: Price
Once the change has been logged and (where required) notified, it needs to be formally priced. This means preparing a cost build using the contract's valuation mechanism — dayworks, schedule of rates, or fair valuation — and submitting it for the client's review.
Step 4: Track to agreement
The submitted quotation needs to be tracked until it's either agreed, rejected, or modified. This means recording the client's response, any counter-offer, and the final agreed position. Without active tracking, variations can sit in a "submitted" status indefinitely while the project moves on.
Step 5: Include in applications
Agreed variations need to be included in the next interim payment application. This is the step that most often fails in manual systems — the agreed variation is recorded in the change register but never transferred to the valuation. Change order tracking software that integrates with the payment application eliminates this failure.
What Good Change Order Tracking Software Does
The best construction change order tracking tools:
- Maintain a single register accessible to the whole commercial team
- Calculate and monitor notification deadlines per contract type
- Provide standardised pricing templates
- Show the current status of every change at a glance
- Track both cost and programme impact in the same record
- Feed agreed changes directly into payment applications
- Produce a complete audit trail for dispute purposes
- Give a portfolio view of total change exposure across multiple projects
FlowMetrics Change Order Tracking
FlowMetrics includes a fully integrated change order tracking module designed specifically for UK main contractors and developers. The change register connects directly to the interim valuation workflow — so agreed variations are included in applications automatically — and the portfolio dashboard shows total variation exposure across all live projects.