We find
the lines
that move
your price.
We read your tender documents.
Your estimator decides.
Free pilot on one live tender.
as required by site conditions.
“Who wins the tender? The one who made the biggest mistake.”
Gaps in tender documents found too late cost margin.
bids rejected on average per public works procurement in 2025, up from 1.94 in 2024
Public Procurement Office, report for 2025Design documentation errors affect 31.5% of projects in Europe; claimed costs reach 38.1% of budgets.
HKA CRUX Insight IX, October 2026, 2,410 projectsYour last day to ask comes before your bid deadline.
Questions to the contracting authority have a deadline: the deadline for clarification questions in your tender, set by procurement law and the tender terms.
Your tender terms give the question deadline as
From your tender terms: last day to askTue 17 November 2026
the date in your tender terms: 10 days before your bid deadline, Fri 27 November 2026
Counted back: last day to askTue 17 November 2026
bid deadline Fri 27 November 2026 − 10 days, as your tender terms say
Not sure: your last day to ask isin the tender terms
It comes before your bid deadline, Fri 27 November 2026. Find it in the tender terms, then pick A date or Days above.
Check the dates: the question deadline comes before the bid deadline.
Both dates go into the pilot form below, where you can change them.
One clause as written. The same clause as delivered.
A short list of gaps (up to 15), each with a priority and a quote from the document, and draft questions to the contracting authority, ready to send. Drag the divider across the example, or switch it with the buttons below.
Example: school extension · fictional data
4.2 The Contractor shall price all external works shown on drawing A-102.
- A-100Site plan
- A-101Ground floor plan
- A-103Sections
- A-104Elevations
4.2 The Contractor shall price all external works shown on drawing A-102.3
- A-100Site plan
- A-101Ground floor planA-102 · not in the set
- A-103Sections
- A-104Elevations
Drawing A-102 is named in the contract but is not in the tender documents.
“…price all external works shown on drawing A-102.”
“Please publish drawing A-102, or confirm which external works the bid should price.”
As written on the left: clause 4.2 names drawing A-102, and the register does not list it. As delivered on the right: the gap, its priority, the quote and the draft question. Drag the divider to the left.
We take the document work off your bid team, so your team spends its time on the price and the decisions. Fewer gaps slip into your price unnoticed; your estimator steers every decision.
Your estimator verifies and decides; we do the reading.
We read and prepare
Example gap · fictional
Plaster: 1,240 m² in the bill, 1,410 m² in the specification “Machine gypsum plaster, 1,410 m²” · Spec., 4.2- aAsk the contracting authority
- bPrice it as a risk
- cWrite it down as a bid assumption
Your estimator: what is true for this gap?
Tick what holds. Each tick shows what to weigh; there is no verdict.
-
Answers to questions are public, so not every gap should be asked.
-
A gap you do not clarify ends up in your price as risk, or as a loss.
-
Price it as a risk, or write it down as a bid assumption.
The decision to ask, price or assume is yours; we prepare it.
Subcontractor quotes, checked before you compare prices.
- Scopecompared line by line with the bill of quantities
- Exclusionsflagged
- Price validityset against your bid validity
- Company condition Coming sooneach subcontractor’s, from public registers: status, filed accounts, debt registers
Main contractors with many subcontractors feel this most.
Your bid validity: 90 days
| Quote | Scope vs bill | Exclusions | Price valid | Unclear items |
|---|---|---|---|---|
| Subcontractor A | 38 of 38 lines | Scaffolding | 90 days | None |
| Subcontractor B | 38 of 38 lines | None | 30 days | None |
| Subcontractor C | 38 of 38 lines | None | 90 days | Line 14 unclear |
Rules that apply to your tender, explained in plain words.
The rules keep changing faster than a bid team can follow them, so the doubt goes into your price as a reserve.
Part of the service, on request.
- Plain-language explanationsof the rules that apply to this tender, always with the source and the date of the legal state
- Answers to your bid team’s questionsabout the rules, checked by an expert
- Clauses to check against current rulesflagged in the tender check
Explanations to support your decision, not legal advice.
-
In your tender
“§ 9.3 The contract price is indexed once a year, if construction prices change by more than 5%.”
-
In plain words
Your price is reviewed once a year, and only above 5%. Smaller rises stay with you, so price them in.
Source: public procurement rules, state as of 1 October 2026
-
Your bid team asks
Can we ask the buyer for a lower threshold than 5%?
Yes, in a question to the buyer before the deadline for questions. The buyer decides.Checked by an expert
You hand over the link. The first gap list in 2 working days.
- 1You send the linkto a live tender, or its bid deadline.
- 2We replyand agree the pilot with you.
- 3Your documents reach usThe 2 working days start here.
- 4We read themAn expert in the loop reviews every result.
- 5The first gap listin your format: a letter to the contracting authority, or Excel.
- 6Your estimator decidesand sends the questions.
We take over the document review and deliver the result in your format.
For the board: margin is decided before the contract is signed.
Gaps in tender documents found too late cost margin. A gap you do not clarify ends up in your price as risk, or as a loss.
Across European projects, claimed costs reach 38.1% of budgets.HKA CRUX Insight IX, October 2026, 2,410 projects
Each gap gets a decision before the deadline for questions: ask the contracting authority, price it as a risk, or write it down as a bid assumption.
The register of bid assumptions is yours to use later as evidence for claims.
Lower bid risk and much less time on the documents. Your estimator steers every decision.
The pilot is free, on one live tender.
Send one live tender for the pilot →Run by DO OK. Your documents stay in the EU.
ISO
27001
27018
9001
14001
They are never used to train AI models, and we can work in your infrastructure.
DO OK · a European company
Before you send us a tender.
Plain answers to what bid teams ask first.
You don’t know our tender like we do.
Your estimator verifies and decides; we do the reading.
Is my tender confidential?
Your documents stay in the EU and are never used to train AI models; we can work in your infrastructure.
What does it cost to try?
A free pilot on one live tender.
Does a person check the result?
An expert in the loop reviews every result.
Which documents do you read?
We review your tender documents (terms of reference, functional and utility programme, bill of quantities, specifications, contract template, indexation clause) before the deadline for questions.
Which question deadline applies to me?
The deadline for clarification questions in your tender, set by procurement law and the tender terms. You find it in the tender terms.
What does my managing director get out of it?
A register of bid assumptions you can use later as evidence for claims.
What about subcontractor quotes?
Available now: we check subcontractor quotes line by line against the bill of quantities for scope, exclusions and price validity against your bid validity. Coming soon: each subcontractor’s company condition from public registers (status, filed accounts, debt registers) next to its quote.
Start with a free pilot on one live tender.
Send the link to the tender, or its bid deadline. We reply, and you send the documents.
How DO OK handles your details: privacy policy.
Rather talk first? Book a short call by e-mail.
No date yet →