The verdict in three sentences
For a general contractor in Dublin bidding on around 100 tenders a year, an AI bid writing assistant connected to its internal document base costs roughly 15,000 to 40,000 EUR to build, plus 100 to 600 EUR per month in model usage. The payoff does not come from a bid "written by AI": it comes from cutting drafting time on quality submissions from 3 to 5 days down to 1.5 to 2.5 days, without lowering quality. With typical win rates of 15 to 25 %, every hour saved can go into better targeted bids, which is worth far more than the salary saving itself.
Where the time goes in a tender submission
Whether it is an eTenders public works contract or a private design and build package, Irish tender responses reuse the same building blocks: company profile, project team and plant, methodology and programme, health and safety, sustainability, and relevant case studies. These blocks sit in shared drives, old Word submissions and the heads of a few senior estimators.
| Submission stage | Current time (2026 estimate) | With AI assistant | What the AI does |
|---|---|---|---|
| Reading the tender pack (ITT, specs, scoring) | 4 to 6 h | 1.5 to 2 h | Extracts award criteria, weightings, mandatory documents |
| Finding relevant case studies | 3 to 5 h | 0.5 to 1 h | Searches past projects by sector, value and client type |
| Methodology and programme narrative | 8 to 12 h | 4 to 6 h | First draft aligned with the specs, reviewed by the contracts manager |
| Team CVs and plant schedules | 2 to 3 h | 0.5 h | Assembles from HR and plant records |
| Health, safety and sustainability | 3 to 4 h | 1 to 1.5 h | Reuses approved procedures, adapts to the site |
| Review, formatting, compliance check | 4 to 6 h | 3 to 4 h | Flags missing documents and inconsistencies with the ITT |
| Total per submission | 24 to 36 h | 10.5 to 15 h |
AI does not replace estimating or pricing strategy. It removes the searching and the first draft, which usually account for more than half of the effort.
What an AI bid assistant costs in 2026
Three approaches exist for a contractor with 50 to 300 staff. Figures below are 2026 market estimates for Ireland and the UK, excluding VAT.
| Option | Setup cost | Monthly cost | Data control | Fits when |
|---|---|---|---|---|
| ChatGPT or Copilot used ad hoc | 0 EUR | 20 to 30 EUR per user | Little control over uploaded documents | One-off tests, no sensitive data |
| Specialist bid management SaaS | 2,000 to 8,000 EUR | 300 to 1,500 EUR | Depends on the vendor, check hosting | Medium volume, standard process |
| Custom assistant on internal knowledge base (RAG) | 15,000 to 40,000 EUR | 100 to 600 EUR usage + 150 to 400 EUR hosting | EU hosting, per-user permissions | 80+ tenders a year, differentiating know-how |
| Custom assistant + ERP and document management link | 35,000 to 60,000 EUR | 400 to 1,000 EUR | Full control | Multi-office group, several trades |
Custom builds make sense when your winning submissions are your main asset: the assistant learns from your methodologies, your case studies and your wording, instead of producing generic text that evaluators spot immediately.
Confidentiality is non-negotiable
Tender packs may contain drawings, security information or commercially sensitive data. Insist on: document hosting in the EU (Azure North Europe in Dublin, AWS eu-west-1 or OVH), a contractual commitment that your data is not used to train models, access logs, and deletion of tender documents once the standstill period ends. This matters for GDPR and for any confidentiality clause in the ITT.
Mini case study
Aoife, bid manager at a 140-person general contractor in Dublin, handles about 100 tenders a year. Each submission takes roughly 30 hours across herself, an estimator and a coordinator, at an average loaded cost of 60 EUR per hour.
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- Current cost: 100 × 30 h × 60 EUR = 180,000 EUR per year.
- With the assistant, time drops to 13 h per bid: 100 × 13 h × 60 EUR = 78,000 EUR.
- Time freed: 1,700 hours, or 102,000 EUR of capacity to redeploy.
- Investment: 28,000 EUR setup + 450 EUR per month all-in, so 33,400 EUR in year one.
Aoife redeploys part of the freed time to 15 additional bids a year. At an 18 % win rate and an average net margin of 30,000 EUR per contract won, those bids represent about 2.7 contracts and 81,000 EUR of potential margin. Payback lands within six months, provided human review stays systematic.
FAQ
Can an AI-assisted submission be marked down by evaluators?
Generic text gets marked down, whether written by AI or copied from an old bid. The assistant should produce a first draft anchored in the specs and your real projects, then be reviewed by the contracts manager. Contractors working this way keep their win rate stable, around 15 to 25 %.
How long does deployment take?
Plan 6 to 10 weeks: 2 weeks to collect and clean past submissions, 3 to 5 weeks of build and indexing, then 2 weeks of testing on live tenders. A base of 50 to 100 winning submissions is enough to start.
Our past bids are Word and PDF files on a shared drive. Is that a problem?
No, that is the most common situation. Indexing reads Word, PDF and Excel. The main work is removing outdated versions and tagging each document by sector, value and client type, which takes 3 to 5 days.
What model usage cost should we expect for 100 bids a year?
For 8 to 10 bids a month with tender packs of 200 to 400 pages, usage typically runs 100 to 600 EUR per month depending on the model. A monthly spending cap can be set to avoid surprises.
Can the assistant connect to our estimating software or ERP?
Yes, through an API or file exports, to pull up-to-date project references, headcount and plant lists. This integration usually adds 8,000 to 20,000 EUR and removes re-keying of team and plant schedules.
Let's scope your project. Send us three past submissions and your annual tender volume, and we will scope the build, indicative budget and a realistic rollout timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
