A checklist of the 10 most common tender mistakes small-to-mid AU builders make — each one preventable, each one fatal to your chances.
BidAlert Team
Construction tender specialists
Most tenders aren't lost on price — they're lost because the response hit one of these preventable mistakes. Review every submission against this checklist before you click submit.
The single most common reason compliant-looking bids get auto-rejected. Mandatory requirements are pass/fail — miss even one and your submission is discarded without being scored.
Prevention: Extract every mandatory requirement from the RFT into a checklist. Tick each one off against your company profile BEFORE you start writing. If you don't meet a mandatory, don't bid.
During the open period, the agency issues updates called addenda — answers to bidder questions, scope clarifications, date changes. Responses that don't reflect the latest addenda are marked down or disqualified.
Prevention: Check the portal for addenda at least three times — when you start, one week before submission, and on the morning of submission.
If the RFT caps a section at 2000 words and you submit 2400, you get an automatic markdown or the extra words are ignored. Some agencies auto-reject for over-long responses.
Prevention: Use Word's word-count tool. Count each section separately. Stay under the limit by 50–100 words as a safety margin.
Many tenders include a returnable response template or specify mandatory section headings. Builders who reformat into their own template look like they didn't read the RFT — and give the evaluator extra work.
Prevention: Always use the agency's template exactly. Same headings, same order, same formatting. Save your own polished template for private clients.
Pasting in a standard "we manage our projects using best-practice methodology" section from your last 5 tenders is obvious to evaluators and loses marks.
Prevention: The methodology must be specific to THIS project. Reference the actual site, the actual scope, the actual constraints. If the methodology could be copy-pasted into another tender by changing the project name, rewrite it.
Returnable schedules are the fill-in-the-blank forms the tender asks you to complete (company details, declarations, pricing schedules, compliance matrices). Leaving one out — even a small one — usually results in auto-rejection.
Prevention: Make a checklist of every returnable schedule. Tick each one off as you complete it. Cross-check against your submission package before uploading.
Your Certificate of Currency (insurance) needs to be current at the date of submission. Agencies regularly reject bids with expired or about-to-expire COIs.
Prevention: Before you submit, check every certificate's expiry date. Request updated copies from your broker if any are within 30 days of expiry.
If the tender asks for a schedule of rates with specific line items, you must price those exact line items. Submitting a lump-sum price when they wanted a BOQ — or vice versa — will either get you rejected or make your bid impossible to compare against others.
Prevention: Use the agency's pricing template exactly. If they've provided an Excel spreadsheet, fill out their spreadsheet. If they specify 15 line items, price 15 line items. Don't lump-sum when they want itemised.
Listing your 10 most recent projects, regardless of relevance, looks lazy. Evaluators want to see 2–4 closely matched past projects — similar scope, value, client type, location.
Prevention: For each tender, hand-pick 2–4 past projects that most closely match the current project. Write the reference to emphasise the similarities ("like the current tender, this project involved…"). Skip unrelated portfolio work.
Portal outages, file-size limits, large-file-upload timeouts, email attachment rejections, forgotten addenda, last-minute edits that break the formatting — all of these happen. All of them happen more often in the final hour before close.
Prevention: Target submission 24 hours before the deadline. Complete a full dry-run upload at least 48 hours before close. Confirm receipt with the portal. Don't rely on email submission unless the RFT explicitly requires it.
Every one of these 10 mistakes is preventable. A 30-minute pre-submission review saves you from 10 weeks of effort going in the bin. Don't skip it.
BidAlert's compliance checker cross-references your draft against every mandatory requirement and returnable schedule from the tender pack — flags anything missing before it's too late.
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