Procuring a main contractor in the public sector isn’t the same exercise as hiring one privately. There’s a legal framework governing how the process runs, a transparency obligation that follows the contract long after award, and — increasingly — a requirement to show that the money spent delivers value beyond the build itself.
For procurement leads, estates teams, and facilities managers working across councils, the NHS, housing associations, and other public bodies, getting this right matters as much as the build quality that follows it. Here’s what to know before starting the process.
The Legal Framework Has Changed
The Procurement Act 2023 is now the governing regime for public sector procurement in England, Wales, and Northern Ireland, replacing the older EU-derived rules. For anyone running or responding to a construction procurement, three changes matter most:
- The competitive flexible procedure is now the default method, replacing the old fixed menu of procedures. Authorities have far more discretion to design a process that fits the specific contract — how many stages, whether to negotiate, how evaluation is weighted — rather than following a rigid EU-style template.
- Transparency runs the full contract lifecycle. Pipeline notices, preliminary market engagement notices, contract performance notices, and payment publication requirements now apply well beyond the award stage. From April 2026, authorities must publish payments over £30,000 (including VAT) made under public contracts, and KPI performance is published annually.
- A central debarment register now exists, giving authorities a formal mechanism to exclude suppliers on integrity or performance grounds — and giving buyers a reason to check a contractor’s standing before shortlisting.
The practical implication for anyone procuring a contractor: build in time for a compliant process, and expect more documentation and public accountability at every stage than under the old regime.
Social Value Is No Longer a Tick-Box Exercise
If your organisation is procuring construction or facilities services, social value will almost certainly be a scored part of the evaluation — not just a supporting statement.
Central government procurements over £1 million now carry a minimum 10–20% weighting for social value under the updated Social Value Model, and while that specific policy applies formally to central government bodies, many councils, NHS trusts, and housing associations already apply comparable weightings through their own social value frameworks.
What this means in practice for a public sector client procuring a contractor:
- Ask prospective contractors what they actually deliver locally — apprenticeships, local labour, local subcontractor spend, sustainability commitments — not generic corporate statements.
- Weight social value meaningfully in the evaluation criteria, not as a marginal tiebreaker.
- Expect to monitor delivery against social value commitments over the life of the contract, not just at bid stage, since KPI reporting is now a standing obligation rather than a one-off promise.
A contractor with a genuine, evidenced track record of local delivery — apprenticeship numbers, community engagement, sustainable sourcing — will stand out clearly from one recycling the same paragraph across every tender.
What to Look for in a Main Contractor
Beyond compliance with the procurement process itself, a few practical checks separate a contractor capable of delivering public sector work from one that only looks capable on paper:
- Sector experience across public bodies, not just private commercial work — public sector projects come with different stakeholder management demands, from occupied-site working to public accountability for delays.
- Financial standing and insurance appropriate to contract value, verifiable through the standard due diligence questions in the selection questionnaire.
- A track record across the full lifecycle — construction, fit-out, refurbishment, and facilities management — since many public sector contracts (particularly for occupied buildings like schools, offices, and healthcare sites) need a contractor who can manage live, in-use environments, not just a clean build on an empty site.
- Health and safety and quality accreditations relevant to the sector, alongside a clear approach to reporting and contract management that matches the new transparency requirements.
- Registration and readiness for the Central Digital Platform, since suppliers now need a unique supplier identifier to participate in and be recorded against public contracts.
Getting the Brief Right Before Going to Market
A significant share of procurement delay and disputes trace back to a brief that wasn’t specific enough at the outset. Before publishing a notice, it’s worth being precise about:
- Whether the requirement is new build, refurbishment, fit-out, or ongoing facilities management — or some combination that needs to be reflected in how the contract is structured
- Site access constraints, particularly for occupied public buildings
- Timeline and any statutory deadlines the delivery needs to hit
- How social value will be scored and monitored, not just requested
Preliminary market engagement — now a formal, published stage under the Procurement Act 2023 — is a genuine opportunity to test assumptions with contractors before the formal process starts, rather than discovering gaps in the brief once tenders are already in.
Working With a Contractor Across the Full Project Lifecycle
Public sector projects rarely end cleanly at practical completion. Facilities need to be maintained, refurbished again in a few years, and adapted as use changes. A contractor that can move from construction through fit-out into ongoing facilities management offers continuity that’s genuinely valuable for a public sector client — one point of accountability, a working relationship with institutional knowledge of the building, and fewer re-procurement cycles for closely related work.
The Bottom Line
Procuring a contractor in the public sector now means navigating a more transparent, more heavily documented process than a few years ago — and one where social value delivery is scrutinised well past the point of award. The organisations that get the best outcomes are the ones that treat the brief, the evaluation criteria, and the contractor selection with the same rigour the Procurement Act 2023 now expects, rather than defaulting to lowest price.
Mobius Group works across construction, fit-out, refurbishment, and facilities management for clients across a range of sectors, and understands what public sector delivery demands at every stage of a project. Find out more about how we work or get in touch to discuss a project.