How to Price Tenders UK — A Guide for Trade Contractors Bidding on Larger Projects (2026)

What is a tender?

A tender is a formal process where a client — a main contractor, local authority, housing association, or developer — invites contractors to submit a priced offer for a defined scope of work. It is fundamentally different from a quote. A quote responds to a homeowner describing a job in conversation; a tender responds to a full specification document, drawings, a programme, and a defined submission deadline.

Tenders are how trade businesses access larger, longer-duration contracts. A housing association electrical maintenance contract might run for three years. A groundworks package on a residential development might be six to twelve months of committed work at agreed rates. That kind of revenue stability is simply not accessible through the domestic quoting market — tendering is the route in.

Types of tender

Understanding the type of tender you're bidding into shapes your strategy from the start:

• Open tender. Any contractor can submit. Common for public sector work above certain thresholds. High competition, but no barrier to entry beyond meeting the PQQ requirements.
• Selective tender. The client invites a shortlist of pre-qualified contractors — typically three to six. This is the most common route for trade packages on construction projects. Getting onto approved contractor lists is the primary barrier; once you're invited, you have a genuine chance.
• Negotiated tender. The client approaches a single preferred contractor and negotiates price directly. Usually reserved for specialist work or where an existing relationship exists. You won't bid against anyone else — but the client will scrutinise your build-up closely.
• Two-stage tender. In stage one, contractors are selected on methodology, overhead rates, and profit percentages rather than a full price. In stage two, the selected contractor prices the detailed scope working collaboratively with the client. Increasingly common on larger projects — it rewards contractors who invest in quality submission documents at stage one.

For most trade contractors, the selective tender is the primary target. The real work is getting onto approved lists — with main contractors, housing associations, local authorities, and FM companies — so you're invited when packages come to market.

Reading and understanding a tender pack

Before you touch a spreadsheet, read every document in the tender pack. A tender pack for a trade package typically contains:

• Invitation to Tender (ITT). The covering document — submission deadline, format requirements, contact details, and evaluation criteria.
• Employer's Requirements (ER). What the client expects delivered — scope, standards, performance requirements.
• Bill of Quantities (BQ) or specification. The itemised breakdown of work you're pricing. Follow the structure exactly — don't rearrange it.
• Drawings. Architectural, structural, services. Use these to validate the BQ and spot anything missing.
• Form of contract. The legal framework — JCT, NEC, or bespoke. Understand the payment mechanism before pricing.
• Tender return documents. The forms you'll complete and submit with your price.

Four things to focus on when reading:

• The programme. Is the timeline achievable given your current workload? An impossible programme is a risk you'll absorb.
• Contract conditions. What is the payment mechanism? How much retention, and when is it released? Are there liquidated damages (LDs) for delay — and at what rate?
• Scope definition. What exactly is in your package and what is excluded? Ambiguity at tender stage becomes a dispute during the contract.
• Provisional sums. These are placeholders in the BQ for work that may or may not happen. Don't assume they convert to real work — but do understand which ones fall within your package if they do.

Building your tender price

A tender price is not a day-rate estimate. It is a structured cost build-up with every element priced explicitly. The standard structure for a trade package is:

• Labour. Calculated from your take-off — how many operative hours does each element of work require? Apply your all-in labour rate (including NI, holiday, sick cover, and supervision) not just the hourly wage.
• Materials. Priced from your take-off using written supplier quotes. Every material line should have a source. Don't price from memory on tender work.
• Plant and equipment. What access equipment, specialist tools, or hired kit do you need? Scaffold, cherry pickers, generators, compressors — price them explicitly and check who is responsible for providing welfare facilities on site.
• Subcontractors. Any elements you'll sub-out should be priced from written quotes, not estimates. Name your subcontractors if the client asks for it.
• Preliminaries. Your on-site costs that aren't tied to a specific work item: site supervision, welfare, accommodation if required, travel to site, site-specific inductions, and any PPE or consumables. These are often underpriced by contractors who focus only on production costs.
• Overhead and profit. Applied as a percentage on top of your production costs. For trade packages, 8–15% is typical — lower on competitive open tenders, higher on negotiated or specialist work. This covers your business running costs (office, vehicles, insurance, admin) plus margin.

Price every element. A blank line in a BQ is as problematic as a wrong price — it either gets interpreted as zero (which you'll have to deliver for free) or your bid is disqualified for being incomplete. If a line is genuinely not in your scope, write a zero and add a qualification, don't leave it blank.

Getting supplier quotes for tenders

Always get two or three written quotes for materials on tender work. Suppliers know you're pricing a project and should offer competitive rates — don't accept the first price you're given.

Quote validity matters. A supplier quote is typically valid for 30 days, but your tender may not be accepted for eight to twelve weeks. Lock in prices where you can, and if you can't, include a qualification in your tender submission:

"Material prices are based on supplier quotes valid for 30 days from tender submission. Any increase in material costs in excess of 3% following acceptance will be treated as a variation and priced accordingly."

This is not unusual — main contractors and clients expect it on projects with extended tender periods, particularly for materials subject to supply chain volatility (copper, steel, timber). The key is to state it clearly rather than assuming the client will accommodate it without being told.

Pre-tender meetings and site visits

Always attend pre-tender meetings and site visits if you're invited. This is not optional on competitive tenders — attending signals commitment and competence. Contractors who don't attend are often viewed as less serious about the work.

Tender clarification meetings are your chance to resolve scope ambiguity before you price it. Mis-pricing ambiguous items is one of the most common causes of tender losses — either you price too high and lose the work, or too low and lose money delivering it.

Questions worth asking at pre-tender meetings:

• What are the access arrangements — hours of access, loading restrictions, parking?
• Is the programme phased? Are there sections that must be complete before others start?
• Who is responsible for welfare provision on site?
• Who manages waste disposal and skip provision?
• Are there noise or vibration restrictions on the programme?
• Is there a requirement for any particular contract management software or reporting system?

The contractor who attends pre-tender meetings and asks specific, well-considered questions is already differentiating themselves from the competition. Procurement teams notice.

Qualifications and clarifications

A qualification is something you're changing or excluding from the tendered scope. A clarification is a condition or question you're attaching to your price. Both must be listed clearly and prominently in your tender submission — buried qualifications don't protect you if a dispute arises later.

Common qualifications on trade packages:

• "This tender excludes provisional sums X and Y as indicated in section 3 of the BQ."
• "This price is based on unhindered access during normal working hours, Monday to Friday."
• "Retention is accepted at a maximum of 5%, reduced to 2.5% upon practical completion of the relevant section and released in full within 12 months of practical completion."
• "This price assumes a single mobilisation. Any requirement for phased or partial mobilisation will be priced as a variation."
• "Waste disposal from site is excluded and assumed to be the responsibility of the principal contractor."

Never assume qualifications are read. Highlight them in a covering letter. If you're submitting electronically through a portal, put them in the notes field and ensure they are referenced in the pricing document itself.

Winning without being the cheapest

Cost is one of three factors evaluated in most tenders: price, quality, and programme. On many trade packages, price carries 50–60% of the weighting — which means quality and programme together carry 40–50%. A mid-range price with a strong method statement, evidence of similar projects, and a realistic, well-structured programme frequently beats a lower price that comes with no supporting information.

Invest time in the non-price elements of your submission. A method statement that specifically addresses the risks of this project — access constraints, phasing requirements, working around occupied premises — demonstrates that you've actually read and understood the scope. Generic method statements that could apply to any job score poorly because evaluators can see immediately that they're boilerplate.

If you don't win, ask for feedback. Most tender processes — particularly public sector — include a structured debrief. This will tell you precisely where you scored relative to the winner, which section of your quality submission lost you points, and whether your price was in range or significantly off. That information is invaluable — treat every unsuccessful tender as paid education on what to improve next time.