Eleven months into a council drainage contract, a contractor is arguing about whether trench excavation was measured to nominal width or actual width. The difference across the job is about $70,000. Neither reading is unreasonable; the specification is genuinely ambiguous.

During the tender period, that ambiguity was visible in the documents. Nobody asked. The question would have taken four minutes to write, the answer would have gone to every tenderer, and it would have been on the file forever.

The window nobody uses

Almost every approach to market includes a clarification period — a defined window in which tenderers may submit written questions and the buyer issues written answers to all tenderers.

It is the only moment in the entire process where a contractor can change what they are being scored against. After submission you are stuck with the documents as issued. After award you are stuck with them as contracted. During the clarification window, a well-framed question can add a provisional item, confirm a measurement basis, extend a deadline, or clarify a requirement that was going to cost you the bid.

Civil SMEs use it rarely, for three reasons that are all worth challenging:

• “It makes us look like we do not understand the job.” The opposite is true. Buyers read questions as evidence of engagement, and the tenderers who ask nothing are frequently the ones who have not read the documents closely.
• “They will not change anything anyway.” Often true of the big things and untrue of the small ones. A confirmation of measurement basis costs the buyer nothing and is worth a great deal to you.
• “We ran out of time.” The real reason, most of the time. The clarification deadline usually falls at the point when pricing is only half done, which is exactly when the ambiguities are being discovered and exactly when nobody has time to write them up.

How the clarification process works

The mechanics are consistent across Australian government and council tendering, though the terminology varies — clarification, request for information, tenderer query.

1. Questions are submitted through the portal, in writing, by a stated deadline that is earlier than the tender closing date — commonly five to ten business days before close.
2. The buyer answers in writing and, critically, distributes the question and answer to every tenderer, usually with the questioner’s identity removed.
3. Where the answer changes the documents, it is issued as a formal addendum rather than as a response.
4. Tenderers acknowledge addenda as part of their submission. Failing to acknowledge one is a compliance failure.

Two features of that process matter strategically. First, your question becomes everyone’s answer — see §07. Second, a written answer becomes part of the tender documents, which is what makes it valuable long after the tender closes.

The platform mechanics differ by jurisdiction. Our platform guides cover where the clarification function sits on each: Buy NSW, QTenders, Buying for Victoria, AusTender and VendorPanel.

Addenda, and why they are binding

An addendum is a formal change or clarification issued to all tenderers during the tender period, and it forms part of the tender documents.

Three practical rules:

• Acknowledge every addendum in the form the tender requires. An unacknowledged addendum is a straightforward path to a non-conforming tender.
• Re-check your pricing against every addendum, not just the ones that look significant. A revised drawing issued as an addendum in the final week is exactly the kind of change that gets acknowledged and not actually priced.
• Keep the addenda with the contract file after award. They are part of the contract documents, and they are the evidence of what was clarified before you priced. This matters when a scope argument arises months later — see contract administration for civil SMEs.

A late addendum is also a legitimate basis for requesting an extension of the closing date. If a material change lands three days before close, ask. Buyers extend more often than contractors expect, because an addendum that tenderers cannot properly price undermines their own process.

What is worth asking

Good questions fall into five categories. Every one of them has a direct effect on either your price or your later entitlement.

Category	Examples	Why it matters
Ambiguity between documents	The drawing shows DN450, the schedule says DN375. The specification requires a treatment the bill does not include an item for	Somebody is going to be wrong. Better it is resolved now than remeasured later
Measurement and pricing basis	Is excavation measured in-situ or loose? Is trench excavation to nominal or actual width? Is pipe measured through pits?	Can be 20–30% of a trade. See bills of quantities and measurement
Scope boundaries	Who relocates the service? Who pays the authority fees? Is the survey set-out ours? Who holds the environmental approval?	The classic source of a scope argument at claim time
Risk allocation	Is the geotechnical report able to be relied on? Will a provisional item be included for rock? Is there an escalation mechanism?	Decides how much contingency you carry — see §05
Process and compliance	Will alternatives be accepted? Are qualifications permitted? Is the page limit inclusive of appendices? Which prequalification category is required?	Prevents a non-conformance

A sixth category is worth adding for contractors who intend to bid seriously: anything you are about to carry a contingency for. If you are adding $40,000 because a requirement is unclear, ask the question first. Either the answer removes the contingency and makes you more competitive, or it confirms the risk and you price it knowingly.

Questions that protect your claims position

This is the part most contractors never consider, and it is where the clarification window pays for itself years later.

Several post-award entitlements are decided by reference to what you knew, or should reasonably have known, at tender time. A written clarification is durable evidence of exactly that.

• Latent conditions. The test is what a competent contractor should reasonably have anticipated from the information available and from reasonable enquiries. Asking, in writing, whether the geotechnical information may be relied on — and whether further investigation exists — is itself a reasonable enquiry, and the answer is on the record. See latent conditions.
• Scope disputes. “The contractor shall provide all things necessary” is a clause that gets stretched. A clarification confirming that a specific item is excluded from your scope is close to unanswerable later. See variations.
• Measurement disputes. A written confirmation of the measurement basis ends the argument in the opening paragraph of this guide before it starts.
• Programme assumptions. Confirming access dates, possession arrangements or authority lead times establishes the baseline your later extension of time claim is measured against.
• Escalation. On a long contract, asking whether a rise and fall mechanism will apply is both a pricing question and, if declined, a documented reason for the contingency you carried. See rise and fall clauses.

The reframe: a clarification is not just a pricing input. It is the cheapest piece of claims evidence you will ever create, and it costs a few minutes during a period when nothing is yet at stake.

What never to ask

Some questions damage you, and a few are close to disqualifying.

Do not ask	Why
Who else is tendering	The buyer cannot tell you, and asking suggests you might act on the answer
What the budget or estimate is	Rarely answered, and it signals that your price will follow their number rather than your costs
Anything answered plainly in the documents	The single fastest way to signal you have not read them. Search the documents before you ask
Anything that reveals your commercial approach	Your question goes to every tenderer. “Would you accept a bored solution?” tells your competitors exactly what you are planning — see §07
Requests for a private meeting or a call outside the process	Probity. It puts the buyer in an uncomfortable position and can taint the process
Anything phrased as a complaint	“Why is the programme unrealistic?” reads as an objection. “Please confirm the assumed authority approval period” reads as a question
Twenty questions when three would do	Volume dilutes attention and the important ones get short answers

The anonymity problem

Buyers normally strip the questioner’s identity before circulating questions and answers. That protects who asked, but it does not hide what was asked — and your competitors read the same circular you do.

This creates a real tension, and it is worth resolving deliberately rather than by default.

• Questions that help everyone equally — measurement basis, ambiguity between documents, process questions — cost you nothing. Ask them freely.
• Questions that reveal your strategy — whether a specific alternative method would be acceptable, whether a particular product is approved — hand your thinking to competitors. Consider whether you can phrase them generically, or whether you should price the risk instead.
• Questions that reveal a weakness — asking whether a prequalification category is strictly required tells everyone you may not hold it.

A useful test: if a competitor read this question, what would they learn about us? If the answer is “nothing they could use”, ask it. If the answer is “our whole approach”, think again — or ask it in a form that does not disclose the plan. “Please confirm whether alternative construction methodologies will be considered” discloses far less than “will you accept horizontal directional drilling at chainage 240 to 390”.

How to write a question that gets a useful answer

Vague questions get vague answers, and the most common vague answer — “refer to the tender documents” — is worse than not asking, because it forecloses the point.

Principle	Weak version	Strong version
Cite the document, clause and page	“Can you clarify the excavation requirements?”	“Specification C210 clause 4.3 and Bill item 3.02 — please confirm whether trench excavation is measured to the nominal trench width shown on Drawing C-104 or to the actual excavated width.”
Ask a closed question	“What about the services?”	“Please confirm whether the relocation of the Telstra conduit at ch. 180 is within the contractor’s scope or will be undertaken by the asset owner.”
Offer the alternatives	“How should we price rock?”	“The bill contains no item for rock excavation. Please confirm whether (a) no rock is anticipated, (b) rock is deemed included in item 2.01, or (c) a provisional quantity will be added by addendum.”
One question per question	A paragraph containing four questions	Four numbered questions. Multi-part questions routinely get one part answered
Neutral tone	“The documents are contradictory.”	“There appears to be an inconsistency between X and Y. Please confirm which takes precedence.”

Option (c) in the third row is worth noticing. Proposing the answer you want, as one of several reasonable options, materially raises the chance of getting it. A buyer who has not thought about rock is far more likely to add a provisional quantity when someone has framed it as an available option than when asked an open question.

Timing

The structural problem: clarification deadlines fall before pricing is finished, which is when the questions actually surface.

The answer is to front-load the review.

1. Day 1–2: a read-for-questions pass. Not pricing — reading, specifically hunting for ambiguity, missing items and scope boundaries. Keep a running query list from the first hour.
2. Day 3–5: the take-off surfaces more. Every time an estimator cannot find an item or has to assume something, it goes on the list.
3. Submit early in the window. Early questions get considered answers; questions filed an hour before the deadline get short ones. Early questions also leave time for a follow-up if the answer is unclear.
4. Ask a second round if the window allows. Many contractors treat it as one shot. If the deadline has not passed, a follow-up to an ambiguous answer is entirely normal.

Front-loading the review also feeds the go/no-go decision: if the read-for-questions pass produces thirty serious queries, that is a document set that is not ready, and it tells you something about how the contract will be administered.

When the answer is useless — or never comes

Three unsatisfying outcomes, each with a sensible response.

“Refer to the tender documents.” This means either the answer genuinely is in there — check again, carefully — or the buyer does not want to commit. If you have checked and the ambiguity is real, ask once more with the specific clause references, framed as an inconsistency rather than a request for information. If it still comes back the same way, price the risk and record your assumption in your own file.

“Tenderers are to satisfy themselves.” A refusal to allocate risk, and a meaningful signal. Price accordingly, and note that the refusal itself is useful evidence later that the risk was knowingly transferred rather than overlooked.

No answer at all. Rare, but it happens on council tenders with thin procurement resourcing. Follow up once through the portal. If the deadline passes with no response, record your assumption in writing in your submission — a short, neutral statement of the basis on which you priced. It is not as good as a clarification, but it is far better than silence, and it is visible to the panel before award rather than after.

Take care with that last step, though: stating assumptions can shade into qualifying your tender, and where qualifications are not permitted a qualification is a non-conformance. Keep it to a statement of the basis of pricing, not a condition on your offer.

Recording the answers

Clarification responses are contract documents in waiting, and they are routinely lost between the bid folder and the project folder.

• Save every circular and addendum with the bid, numbered and dated.
• Keep a one-page summary of the clarifications that changed your price or your assumptions — question, answer, what you did about it.
• Move that summary into the project file on award. This is the step that gets missed. The person administering the contract is often not the person who wrote the bid, and they will not know what was clarified unless someone tells them.
• Reference it in the one-page contract summary described in our guide to contract administration for civil SMEs.

The site inspection is part of this too

Where a tender includes a site inspection or pre-tender briefing, treat it as an extension of the clarification window with the same discipline.

• Attend, and take photographs and notes. What was visible on the day is part of what you are deemed to have anticipated — directly relevant to a later latent conditions position.
• Verbal answers at a site inspection are not clarifications. Anything material you are told should be confirmed in writing through the portal. “As discussed at the site inspection on 14 July, please confirm that…”
• Note who attended. The other tenderers are usually all standing there, which is your best available read on the competitive field.
• Register your attendance properly. Some tenders make attendance mandatory, and unregistered attendance can create a compliance problem.

The other RFI window: after award

The same acronym does different work after contract award, and the two are worth distinguishing.

	Tender-stage clarification	Post-award RFI
Purpose	Resolve ambiguity before you price	Resolve ambiguity before you build
Goes to	All tenderers	The superintendent only
Effect of the answer	May become an addendum forming part of the tender documents	May constitute a direction — and sometimes a constructive variation
Why the clock matters	A missed deadline means no question	Days outstanding is causation evidence for a delay claim

That last row is the one to carry forward. A post-award RFI register with a “days outstanding” column is one of the clearest evidence trails available for a principal-caused delay, and it costs nothing to maintain. If an answer to an RFI changes what you have to build, that is not merely information — it may be a variation, and it should be treated as one.

Checklist

In the first two days of a bid

• Find the clarification deadline and diarise it at half the available window.
• Do a read-for-questions pass before pricing starts.
• Start a query list, and add to it every time anyone has to assume something.

Before you submit questions

• Is each one genuinely not answered in the documents?
• Does each cite the document, clause and page?
• Is each closed rather than open, and one question per item?
• Where you want a particular outcome, have you offered it as an option?
• If a competitor read this, what would they learn?
• Have you asked about anything you are about to carry a contingency for?

Before you submit the tender

• Every addendum acknowledged in the required form.
• Pricing re-checked against every addendum, not just the significant-looking ones.
• Clarification summary saved with the bid, ready to move to the project file on award.

The short version

• The clarification window is the only point where you can change what you are scored against. Most contractors let it pass.
• Ask about anything you are about to carry a contingency for. Either the answer removes it, or you price it knowingly.
• Cite clause and page, ask closed questions, and offer the answer you want as one of the options.
• Your question goes to every tenderer. Ask what helps everyone; think twice about what reveals your strategy.
• A written clarification is the cheapest claims evidence you will ever create — particularly on measurement, scope and site information.
• Move the clarification summary into the project file on award. That handover is where it is usually lost.

Sources and further reading

This guide is general information for Australian civil construction businesses and is not legal advice. Clarification processes, deadlines and the treatment of addenda and qualifications are set by the conditions of tender for each approach to market. All examples are illustrative. Always work from the conditions of tender.

• Victorian Department of Treasury and Finance — Tender Documentation (Public Construction — Guidance 3.6) (dtf.vic.gov.au), and Buying for Victoria — Tender Documentation (Construction Guidance 3.6): guidance on what tender documentation should state, including the rules for submitting alternative tenders and the treatment of non-conforming offers, which are settled during the tender period rather than after it.
• Business Queensland — Glossary of terms used in government tendering (business.qld.gov.au): definitions of addenda, conforming and non-conforming tenders, and the tender clarification process as used in Australian government tendering.
• Local Government Procurement (NSW) — What is the definition of a ‘Non-Conforming Tender’ and an ‘Alternative Tender’? (lgp.org.au): the requirement that an alternative tender be lodged together with a complying tender, and the consequence of failing to do so — the basis for the guidance in this article on confirming whether alternatives are permitted during the clarification window.