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Construction variation template and register

A construction variation template has two jobs most versions of it only do one of. The first is the request: what is changing, where it came from, and what it costs and delays. The second is the register — every variation raised on a contract, in one place, so the origin, the cost breakdown and the approval decision are still visible months later when a final account is being argued. A folder of individual emails is a folder; a variation register is the record a final account is actually built from.

What is a construction variation template for?

It is written for the client side of a head contract: the developer, the client-side project manager or the superintendent who has to decide whether a change is a variation, what it is worth, and who wears it. A contractor’s own variation submission will arrive in its own format. This is the structure you assess it against, so that every variation on a job is recorded against the same fields rather than reconstructed from a different set of emails each time.

Origin is the field that decides the argument. A client direction, a contractor proposal, a consultant change and a latent condition are four different entitlement positions, and recording which one applies now saves reconstructing it from correspondence later. Background on how a variation is raised, priced and directed is in variations in construction, and on how an unapproved variation reaches a claim in variations, claims and margin.

Variation request and register — one demonstration row, Bayside Townhouses (demo). The figures are for the walkthrough, not a record of a real project.
FieldWhat goes in itBayside Townhouses (demo)
ProjectThe project the contract belongs to.Bayside Townhouses (demo)
ContractWhich contract the variation changes. A variation only means something against a defined scope.Head contract - construct only
Variation no.A number that is never reused. The number is what a claim, an extension-of-time claim and a final account all refer back to.VO-12
Date raisedThe date the variation was first notified in writing. Contracts set notice periods, and a late notice can cost the entitlement.2026-08-14
Raised byThe person and the organisation. A variation raised by the contractor and one directed by the principal are assessed differently.Project manager, head contractor
OriginClient direction, contractor proposal, consultant change, latent condition, statutory requirement, or an RFI response. Origin is the first thing that decides who wears the cost.Latent condition
Description of the changeWhat is being added, removed or changed, in enough detail that someone who was not there can price it.Rock encountered in the northern basement excavation below RL 11.8, requiring hydraulic hammer, additional cart-away and revised shoring sequence.
Contract clause referenceWhich clause of your executed contract the variation is directed and valued under. AS 4000-1997 and AS 2124-1992 each carry variation and latent-condition clauses; write your contract's own clause number here rather than relying on memory.Latent conditions and variation valuation clauses of the executed AS 4000-1997 head contract (insert your contract's clause numbers)
Cost - labour (ex GST)Direct labour for the changed work, with the rates the contract allows.$6,400.00
Cost - materials (ex GST)Materials for the changed work. Quotes attached, not rates asserted.$0.00
Cost - subcontract (ex GST)Subcontract work in the change, at the subcontractor's quoted price.$3,800.00
Cost - plant (ex GST)Plant and equipment brought in or held on site for the change.$11,200.00
Overhead and margin (ex GST)The on-cost the contract allows on a variation, at the contract percentage. If the percentage is not in the contract, it is a negotiation, not an entitlement.$2,600.00
Total cost effect (ex GST)The sum of the cost lines. A total with no breakdown behind it cannot be assessed, only accepted or refused.$24,000.00
Time impact (working days)The delay to the date for practical completion, in working days. Zero is a valid answer and should be stated, not left blank.4
Extension of time claimedWhether a separate extension-of-time claim has been lodged for this event, and its number. Cost and time are separate entitlements under most standard forms.Yes - EOT-03
StatusDraft, submitted, under assessment, approved, rejected, or withdrawn. A variation with no status is the most expensive kind.Submitted - awaiting direction
Assessed byWho assessed the price and the time. On a superintended contract this is the superintendent's role, not the principal's.Superintendent
Approved byWho holds the delegation to approve at this value. If nobody in the chain has that delegation, the variation is not approved yet.Not approved at the date of this register
Date approved or rejectedThe date the decision was made and issued in writing. Undated approvals are the reason final accounts take months.-
Notes and attachmentsThe evidence: quotes, photographs, survey, the RFI or the geotechnical report the change comes from.Geotechnical report GR-02 shows rock only below RL 11.2. Survey, dated photographs and the excavation subcontractor's quote attached.

How to fill this in

  • The demonstration row adds up: $6,400.00 + $0.00 + $3,800.00 + $11,200.00 + $2,600.00 = $24,000.00. It is the same $24,000.00 the progress claim template shows as the reason a scheduled amount is lower than the amount claimed, because that is exactly how an unapproved variation reaches a claim.
  • Origin is the field that decides the argument. Client direction, contractor proposal, consultant change and latent condition are four different entitlement positions, and recording them as one word now saves reconstructing them from email later.
  • Cost and time are separate entitlements under the Australian standard forms. Record the days even when the answer is none, so a later extension-of-time claim cannot be built on a blank.
  • Standards Australia publishes AS 4000-1997 and AS 2124-1992. This template names the kinds of clause a variation is directed and valued under; it does not reproduce clause text, and it is not a substitute for reading your executed contract.
  • General information, not legal advice. Read your own contract and confirm your position with your solicitor.

How do you fill in each section?

The identification block — variation number, date raised, raised by — is the part that has to stay disciplined. Numbers must not be reused or skipped, a claim, an extension-of-time claim and a final account all refer back to this number, and the date raised is what a notice period in your contract is measured against.

The origin and description block is where the entitlement argument actually lives. Write the description in enough detail that someone who was not on site can price it, and record the origin as one of client direction, contractor proposal, consultant change, latent condition, statutory requirement or an RFI response — not as a general note.

The contract clause reference is which clause of your own executed contract the variation is directed and valued under. AS 4000-1997 and AS 2124-1992 each carry a variation clause and a latent-conditions clause, but the numbering is specific to the contract you signed — write your contract’s own clause number here rather than relying on memory.

The cost breakdown — labour, materials, subcontract, plant, overhead and margin — is what lets the total be assessed rather than just accepted or refused. In the demonstration row, $6,400.00 labour, $0.00 materials, $3,800.00 subcontract, $11,200.00 plant and $2,600.00 overhead and margin add to the $24,000.00 total cost effect.

Time impact and the approval chain are the last two blocks. Record the time impact in working days even when the answer is none, and note whether a separate extension-of-time claim has been lodged — in the demonstration row it is 4 working days, carried as EOT-03. Assessed by and approved by are different roles: on a superintended contract the superintendent assesses, and approval sits with whoever holds the delegation to approve at that value.

What goes wrong with variations?

Raising it without a clause reference. A variation priced and argued with no reference to the contract it sits under is a negotiation, not an entitlement. Write your own contract’s clause number in at the time the variation is raised, while it is still easy to check.

Missing the notice period. Your contract sets its own notice period for raising a variation, and it is not the same period as any other contract’s. Read your executed contract to find yours, rather than assuming a figure that belongs to a different document.

A total with no breakdown behind it. Labour, materials, subcontract and plant, each on its own line, is what lets a total be checked against quotes and rates. A single lump figure can be accepted or refused, but it cannot really be assessed.

Leaving the time impact blank instead of writing zero. Zero is a valid answer and should be stated. A blank field is not a recorded position, and it leaves a later extension-of-time claim with nothing to be built on.

Confusing assessed by with approved by. Assessing the price and the time is one role; holding the delegation to approve at that value is another. If nobody in the chain has that delegation, the variation is not approved yet, whatever the status field says.

Download the template

Free, no email required. Both files carry the same demonstration row you can see above — delete it and type over the structure.

The CSV is the register: one header row of fields and the demonstration record. The PDF is the same template as a printable form, with a blank column to write in.

Frequently asked questions

What is a construction variation?

A construction variation is a change to the scope of a contract after it has been signed — an addition, an omission or a change to the work described in the contract documents. It can be directed by the principal, proposed by the contractor, or triggered by something nobody planned for, like the rock found below RL 11.8 in this template's demonstration row. Cost and time are usually separate entitlements under the Australian standard forms, so a variation is priced and programmed at the same time rather than one after the other. Recording where the change came from, in the origin field, matters because a client direction, a contractor proposal and a latent condition put the cost in different places and are assessed differently.

How do you price a variation?

Break it into the cost lines your contract actually uses — labour, materials, subcontract work and plant — each priced against the rates and quotes the contract allows, then add overhead and margin at whatever percentage the contract sets. In the demonstration row those lines are $6,400.00 labour, $0.00 materials, $3,800.00 subcontract, $11,200.00 plant and $2,600.00 overhead and margin, adding to $24,000.00. A single total with no breakdown behind it can only be accepted or refused; the breakdown is what lets whoever is assessing it check the arithmetic instead of taking the figure on trust.

Does a variation have to be approved before work proceeds?

That depends on your executed contract, and there is no single answer that holds across every Australian head contract. What decides the entitlement is the origin of the change and whether notice was given in the form and within the period your own contract sets — not a general rule either way. Some contracts let work continue on a direction while pricing is still being finalised; others make written approval a precondition. Read your executed contract's variation clause before you rely on an answer, and write the reference into the register at the time the variation is raised rather than reconstructing it later from memory.

What does the contract clause reference field record?

It records which clause of your own executed contract the variation is directed and valued under, not a clause number copied from a textbook or a template. AS 4000-1997 and AS 2124-1992, both published by Standards Australia, each carry their own variation, latent-conditions and notice provisions, but the exact numbering and wording is specific to the version you signed and is not reproduced on this page. Writing the reference down when the variation is raised means a final account argued months later can be checked against what the contract actually says rather than against what someone remembers it saying.

What happens to a variation once it is approved?

It moves from the variation register into the adjusted contract sum, and its value then shows up on the next progress claim as work that can be certified rather than work in dispute. The demonstration row's $24,000.00 variation, VO-12, is the same figure the progress claim template shows as the reason a scheduled amount can sit below the amount claimed while the variation is still awaiting direction — approval is what closes that gap. Time runs on its own track: the 4 working days recorded against VO-12 is a separate entitlement from the cost, and here it is also carried as extension-of-time claim EOT-03.

Keep this register live in UpScale

A variation register that stays live is the one the next progress claim, the retention balance and the budget can all check against, so a variation that changes the adjusted contract sum shows up as the same figure everywhere it lands. UpScale.build keeps variations against the contract they change, from raised to approved, rather than as a document that has to be re-typed onto the next one.

Start free

Feasibility is free — 3 feasibility projects at a time, no card. Or read how variations and claims move development margin first.

Sources

The other templates

  • Progress claim template — A payment claim schedule for a NSW head contract, with the payment-schedule fields the principal has to answer.
  • Construction RFI template — An RFI form and register: question, drawing and specification reference, who has to answer, by when, and whether the answer costs money or time.
  • Scope of works template — A scope of works structure for a residential development head contract: inclusions, exclusions, provisional sums, PC items, interfaces, standards and deliverables.
  • Construction meeting minutes template — Site and PCG meeting minutes: attendees, apologies, safety, programme, RFIs, variations, claims, and actions with an owner and a due date.

General information, not legal advice. These templates are a starting structure, not a contract document: read your own contract, and confirm your position with your solicitor before you rely on any of it. AS 4000-1997 and AS 2124-1992 are named because this template's clause-reference field points at them; their clause text is copyright to Standards Australia and is not reproduced here.