The Six Weeks Between Release and Close

Six weeks sounds like plenty. Most of it is already spoken for.

The clock on a Defence tender is public, precise and largely not yours.

An analysis of 99 Defence construction tenders on AusTender in 2026 found that, outside the Christmas period, the typical tender was open for 42 days. Two in three were open for between five and seven weeks. Larger projects tended to stay open longer: a median of 37 days for jobs under $1 million, and 52.5 days for the four over $8 million.

On paper, six weeks is enough to read a pack, price a job, line up subcontractors and write a response. In practice, a bidder controls far less of that window than the calendar suggests. Some of it is spent before the scope arrives. Some is fixed by the tender conditions. Some belongs to third parties, from the ATO to the AusTender helpdesk.

This edition maps where the six weeks actually go, and what a well-run bid does about each part.

Part 1: The clock starts before release

Much of a strong bid can be prepared before the tender exists. Defence publishes an Estate Works Program Tender Forecast listing each project, its region, a budget band and a planned quarter. Many tenders also appear on AusTender as planned procurements first: 13 of the 15 Defence works tenders open on 19 October carried an Annual Procurement Plan reference.

The forecast tells you what is coming. It is less reliable on when. Of the 65 forecast-listed tenders in the sample, 24 were released in the quarter Defence had forecast. Thirty-three came later, with a median of 79 days after that quarter ended. Eight came early, some by about four months. Defence itself describes the forecast as indicative and subject to change.

The commercial reading is simple. Use the forecast to start work that does not depend on the scope, such as confirming your tax and safety credentials or sounding out subcontractors in that region. Do not use it to book your bid team for a fixed fortnight.

Day one then brings its own delay. On all 15 tenders open on 19 October, the full scope of works is not on AusTender. It is released only after the bidder signs and emails back a confidentiality agreement to the Defence-appointed tender administrator. On S-EST11082, a South Australian sewer upgrade open for just 27 days, that step stands between the bidder and the scope.

The logic follows: a firm that returns the agreement on the morning of release starts pricing days before a firm that finds it in a pile of paperwork on day four. On a short tender, that gap is a meaningful share of the window.

Part 2: The dates you do not set

Inside the window, several deadlines are fixed by the tender conditions. As Edition 16 set out, questions close seven days before the tender does, and requests to use restricted personnel close 14 days before. On a 42-day tender, your last chance to resolve an ambiguity is day 35. Anything you have not read closely by then, you price at your own risk.

The documents also move while you write. In the Land 400 Phase 3 tender, the ANAO found Defence issued 14 addenda containing 170 amendments while the tender was open. That was a major acquisition, not an estate job, but the principle carries. Defence’s Head Contract tender form asks bidders to list every addendum by number and date. Each one is a reason to re-check your price and schedules, so build that rework into the plan.

Then come the items no amount of late-night effort can speed up. Two matter most, and both depend on value, so read the Tender Particulars first.

• Statement of Tax Record. Defence’s template requires one for open tenders valued over $4 million (GST inclusive). The ATO says it will generally process a request within four business days, but every party to a joint venture needs one, and so does the operator. An unsatisfactory result must be fixed before you reapply.
• WHS Accreditation Scheme. Must be held by the award date for directly funded building work over $4 million. The on-site audit must be held on a project where your company is principal contractor, and some applicants need several audits. If you do not hold accreditation when the tender drops, the tender window is not the time to start.

These thresholds matter. Fifty of the 65 forecast-listed tenders sat in Defence’s budget bands below $4 million, so for much estate work neither item will apply. Confirm it in each tender’s Particulars rather than assuming.

Finally, signing. Under Defence’s Estate Works Program Medium Works template, a completed and executed Tender Form is a minimum requirement. An unsigned form makes the tender non-conforming, unless Defence decides it was an unintentional error and allows a correction. That is Defence’s call, not yours. If your authorised signatory is travelling on close day, that is a delivery risk, not an admin detail.

Part 3: Working back from 12.00pm ACT

The last 48 hours carry a different kind of risk: mechanical, not commercial. Of the 99 tenders analysed, 98 closed at 12.00pm ACT time. During daylight saving, that is 9.00am in Perth and 11.00am in Brisbane. A Western Australian team that plans to finish “on the day” has, in effect, lost a morning.

The AusTender Terms of Use set the rest of the rules:

• No more than five files per upload, and no filename over 100 characters.
• The countdown clock on the lodgement page is deemed correct.
• Where a response is split across several uploads, all of them must be completed and receipted before close.
• No receipt means the lodgement has not succeeded.
• The helpdesk works 9am to 5pm ACT time on weekdays, excluding ACT and national public holidays.

Two habits reduce this risk. First, practise on AusTender’s live demonstration tender before you need it. Second, lodge early. AusTender accepts multiple submissions while a tender is open, so a complete version lodged a day early can be replaced with a final one, provided you tell the contact officer which files to evaluate.

Christmas deserves its own line in the plan. The 20 tenders open over 25 December had a median of 73.5 days, but the extra calendar time is not all working time. The ATO closed from noon on 24 December 2025 until 2 January 2026, and statement of tax record requests were not processed until it reopened. The ATO followed the same pattern in 2024. If it does so again, a tender released in November will run into the same pause.

The real question is not how long the tender is open

Forty-two days is the number on the notice. The number that decides the bid is smaller: the days left once the fixed withdrawals are taken out.

Take the scope release, the question cut-off, the third-party lead times, the signature and a lodgement buffer out of the window. What remains is your actual writing and pricing time. Do that sum on the day a tender is released, before anyone commits to bidding. It turns a vague sense of “six weeks” into a working budget, and it can show that the decisive work had to happen before release.

That is the quiet advantage in Defence tendering. Firms that watch the forecast, hold their credentials current and treat lodgement as a rehearsed process are not working harder in the six weeks. They are simply spending more of those six weeks on the bid itself.

Next week, Edition 18 turns to building the response: how a compliant answer is constructed against the tender schedules.

Method. Based on 99 Department of Defence construction tenders on AusTender: 84 that closed between 1 January and 18 October 2026, and 15 open on 19 October. Days open are counted from the publish date to the listed close date, and tenders open over Christmas are reported separately. Close dates may include extensions, and panel tenders that are not publicly listed are not included. Size bands are from Defence’s EWP Tender Forecast.