What is tendering in construction?

Tendering is how a construction client turns a requirement into a contract. The client publishes what it needs and how offers will be judged; contractors submit priced, documented offers; the client scores those offers against the published criteria and awards to the winner. The point of the formality is comparability — every bidder answers the same questions under the same rules, so the marks mean something.

In the private sector the process can be light: a set of drawings, a pricing schedule, a conversation. In UK public works it is regulated. Since the Procurement Act 2023 took effect in February 2025, award is on the Most Advantageous Tender (MAT), criteria and weightings are published up front, and the process is documented through a series of public notices.

Public buyers include central government departments and their agencies, local authorities, NHS trusts, housing associations, universities and schools, and the devolved administrations in Scotland, Wales and Northern Ireland. They buy new build, refurbishment, extensions, decarbonisation and retrofit, planned and reactive maintenance, civils and infrastructure, and professional services alongside the works.

On the supply side, main contractors bid the works packages; specialist subcontractors bid both to main contractors and directly to clients for discrete packages such as roofing, mechanical and electrical, groundworks or fire safety. Consultants bid the design, cost and project management lots. The tendering discipline is the same at every tier — only the value and the volume of documentation change.

• Open. Anyone may respond to the notice. Highest competition, lowest barrier, most wasted effort across the market.
• Selective or restricted. A qualification stage filters bidders on capacity, financial standing and experience; a shortlist is then invited to tender.
• Framework call-off. The client runs a mini-competition among suppliers already appointed to a framework, or makes a direct award where the framework rules allow it.
• Dynamic markets. Introduced by the Procurement Act, these are open lists suppliers can join at any time, from which buyers run competitions.
• Two-stage. The contractor is appointed early on preliminaries, fee and quality; the works price is developed during a pre-construction services agreement.
• Competitive flexible procedure. A procedure the buyer designs itself, which may include dialogue, refinement or successive down-selection. Read the process rules as carefully as the criteria.

1. Planned procurement notice. Early warning that a requirement is coming — the best time to build a relationship.
2. Tender notice and ITT release. The formal invitation with the criteria, weightings and scoring methodology.
3. Clarification period. Bidders submit questions; answers are usually published to all bidders. Ambiguity resolved here is free.
4. Submission. Quality responses, pricing schedule and returnables uploaded to the portal before the stated deadline. Late is excluded.
5. Evaluation and moderation. Independent scoring against band descriptors, then a moderation meeting to agree consensus marks.
6. Award and standstill. The assessment summary is issued, a standstill period runs, then the contract is awarded and a contract details notice published.

Typically three bundles, each with its own failure modes:

• Quality. Written answers to scored criteria — method and programme, resourcing and key staff, quality management, health and safety and CDM, environmental and carbon, social value, risk, and client and stakeholder management.
• Price. The pricing schedule, completed exactly as issued — preliminaries, measured works, provisional sums, overheads and profit, and any requested rates.
• Compliance and returnables. Standard questionnaire, insurances, accreditations, policies, certificates, form of tender and any declarations.

Quality answers are marked against band descriptors, not against how well they read. Price is normally converted to marks by a formula stated in the ITT. Compliance items are usually pass/fail — and a missing certificate can end an otherwise winning bid.

Four patterns account for most avoidable losses: answering a question the ITT did not ask; describing an approach without evidencing that it has been delivered; putting the strongest evidence after the word or page limit, where it is not read; and treating social value as a policy statement rather than specific, local, measurable commitments.

If you are ready to go from understanding the process to running it, start with how to find and qualify construction tenders, then how to write a tender response.

What is tendering in construction?

Tendering is the formal process by which a client invites contractors to submit priced, documented offers to carry out construction work, then evaluates those offers against published criteria and awards a contract. In UK public works the process is regulated and the award criteria and weightings are published in advance.

What is the difference between a tender and a quote?

A quote is usually a price for defined work, often informal and quickly given. A tender is a structured submission that includes price plus documented quality responses — method, resources, programme, quality management, health and safety, social value — assessed against a published scoring methodology.

What are the main types of tendering in construction?

Open tendering, where anyone may bid; selective or restricted tendering, where a shortlist is invited after a qualification stage; framework call-offs, run among appointed suppliers; negotiated or two-stage tendering, where a contractor is appointed early and the price is developed collaboratively; and single-stage design and build, where the contractor prices a defined employer's requirements.

How long does a construction tender take?

Response windows for UK public works commonly run from three to eight weeks depending on value and complexity, with evaluation, clarification and internal approval adding weeks or months before award. Two-stage and competitive flexible processes take longer because they include dialogue or refinement rounds.

What is MAT under the Procurement Act 2023?

MAT — Most Advantageous Tender — replaced MEAT as the award basis. It makes clear that award is not simply about lowest cost: buyers may weight quality, delivery confidence and social value alongside price, so long as the criteria and weightings are published.