The UK Construction Tender Process: From Invitation to Award
How UK tendering actually works — the routes, the documents, the bid/no-bid decision that saves more money than any pricing exercise, and the tracking discipline that stops a deadline being missed at 4pm on a Friday.
Short answer: A tender runs from expression of interest, through a formal invitation with drawings, specification and a pricing document, to a priced return by a fixed deadline, then clarification, evaluation and award. The two stages that decide profitability are the ones before pricing starts: whether to bid at all, and whether the contract terms are acceptable.
The routes
Not all tendering is the same competition, and knowing which one you are in changes how you price.
Open tendering. Anyone can bid. Common on smaller public work and some private jobs. Highest competition, lowest win rate, and the strongest incentive to be selective — you may be one of twenty prices.
Selective tendering. The client invites a shortlist, usually four to six, from an approved list or a pre-qualification exercise. The bulk of UK contracting. Better odds and a better-defined field.
Two-stage tendering. The first stage selects on preliminaries, overheads, profit and a programme approach, often before the design is complete. The second stage prices the developed design, usually with the contractor already engaged. Common on complex or fast-moving projects, and a different commercial exercise entirely — the first stage is largely a rate and capability competition, not a price.
Negotiated. A single contractor, no competition, price agreed by negotiation. Usually a repeat client or a specialist. Best margins, and almost always earned by delivery on something previous rather than by anything a bid team did.
Framework call-offs. You compete once to get on the framework, then compete in a lighter exercise, or not at all, for individual jobs. High effort up front, lower effort per job afterwards.
What arrives in the pack
An ITT of any size will contain most of:
- Instructions to tenderers — deadline, return format, submission portal, what counts as compliant.
- Form of contract and amendments. Read the amendments before anything else. This is where the money is lost.
- Drawings and specification, with a drawing register and revisions.
- Pricing document — bill of quantities, schedule of rates, activity schedule or a lump-sum breakdown.
- Preliminaries — site set-up, welfare, management, attendances, programme constraints.
- Pre-construction information under CDM 2015, which the client must provide.
- Evaluation criteria — the price/quality split and how quality is scored.
- Tender query procedure and cut-off date.
The bid/no-bid decision
This is the highest-return ten minutes in the whole process, and most firms skip it.
Estimating is expensive. A serious tender consumes senior time — the people who are also solving problems on live jobs. Spending it on work you were never going to win, or work that would have hurt you if you had won it, is a direct and invisible cost.
Score honestly, before pricing:
| Question | Why it matters |
| Have we done this type and size of work before? | Unfamiliar work is where estimates are wrong in one direction only |
| Do we know this client, and do they pay? | The most valuable data you hold, and the least written down |
| Are the contract terms acceptable? | Uncapped liability, punitive damages and pay-when-paid clauses have killed profitable firms |
| Who else is bidding, and how many? | One of twelve is a lottery ticket, not a pipeline |
| Do we have capacity in that window? | Winning work you cannot resource is worse than losing it |
| Does it fit our geography and supply chain? | Travel time and unknown subcontractors both price badly |
| What is our realistic win probability? | Below roughly one in five, question whether the effort is better spent elsewhere |
Running the bid
Once you are in, the process is mostly about deadlines that are not yours.
Work backwards from the return date. Set an internal cut-off for supply chain quotes at least a week before, knowing that the important ones will arrive late anyway. Set a separate internal deadline for the written quality submission, because it will otherwise be written the night before by whoever is left.
Get packages out on day one. Your price depends on subcontractors' prices, and their turnaround is the longest lead time in the process. Every day you delay sending the enquiries is a day taken off the end.
Chase deliberately. Fifty enquiries sent produces perhaps fifteen returns without chasing. The gap between those numbers is your coverage, and coverage is what stops you carrying an unpriced package.
Raise tender queries early, before the query cut-off. A query answered for all bidders removes a risk you would otherwise have to price or qualify. A query raised after the cut-off is a qualification.
Log everything with its revision. Addenda and revised drawings arrive mid-tender, routinely without fanfare. Pricing a superseded drawing is the classic tender disaster, and it happens because nobody owned the register.
After submission
The job is not finished when the price goes in.
Clarifications. Expect questions, sometimes with short deadlines. Answer precisely and keep every answer — post-tender clarifications are frequently incorporated into the contract, which means an off-hand email can become a contractual obligation.
Post-tender negotiation. On many jobs the lowest price is not simply accepted. Value engineering, programme adjustment and scope changes get discussed. Reprice properly rather than agreeing reductions in a meeting; a percentage taken off in a room is a percentage taken straight off margin.
Award or feedback. Ask for feedback whichever way it goes. Where you sat against the winner, and on what criteria, is the only reliable data you will get on whether your rates and your written submission are competitive.
Track bids as objects, not as emails
The commonest tender failure is not a bad price. It is a missed deadline, a superseded drawing, or a bid nobody followed up.
Tendering lives in inboxes by default: an ITT arrives as an attachment, packages go out as individual emails, quotes come back scattered across two people's mailboxes, and the only record of the deadline is a note on someone's wall.
The alternative is to treat each bid as a tracked object from the moment the invitation arrives — with the deadline as a real date on the calendar, the drawing register as a versioned list, the enquiries as a set of records with sent and returned states, and the outcome recorded so that win rate by client, by work type and by value becomes a number you can actually look at.
ScopeKit's tender mode tracks a bid from the invitation arriving through to the outcome, with the submission deadline sitting in Key Dates alongside the project's other critical dates, so a return date cannot exist only in someone's memory.
The number nobody calculates
Divide the cost of your bidding effort by the number of jobs it wins. That figure is your true cost of sale, and it belongs in your overhead recovery.
Most contractors have never worked it out, which is why bidding everything feels free. It is not. It is one of the largest unallocated costs in the business, and the bid/no-bid decision is the only lever that moves it.
Related reading
- Winning more tenders — the written submission, and what actually scores.
- How to price a building job — building the price once you have decided to bid.
- Taking off quantities from PDF drawings — getting the quantities right under deadline pressure.
- Tender and bid tracking in ScopeKit — invitations, deadlines and outcomes in one register.
Frequently asked questions
- What does ITT mean in construction?
- ITT stands for Invitation to Tender — the formal document pack a client or main contractor issues inviting priced bids. It typically contains the drawings, specification, pricing document, preliminaries, form of contract and proposed amendments, the return deadline and format, and the evaluation criteria. The ITT sets the rules for the bid, and departing from them is the most common way a compliant price gets disqualified.
- What is a bid/no-bid decision?
- A structured decision, taken before any estimating effort is spent, on whether to bid at all. It weighs the work type against your competence, the client's payment history, the contract terms, the competition, your capacity in the delivery window, and the realistic chance of winning. Bidding everything is the most expensive habit in contracting, because estimating time is not free and a low win rate on unsuitable work crowds out the bids you could have won.
- How long do contractors get to price a tender?
- It varies enormously — from a fortnight on a small subcontract package to three months or more on a major project. What matters more than the headline period is how much of it survives once you have received subcontractor quotes back, since most packages depend on prices that arrive in the final days. Working backwards from the deadline to set internal cut-offs for supply chain returns is the difference between a considered bid and a panic.
- What is a qualification in a tender, and should you submit one?
- A qualification is a stated departure from the tender documents — an assumption, exclusion or condition attached to your price. Qualifying protects you where the documents are ambiguous or the risk is unpriceable, but many ITTs state that qualified bids may be rejected. The practical approach is to raise the point as a tender query first, so the answer applies to all bidders, and to qualify only what remains genuinely unresolved.
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