Why do past project roles matter on a Gabiley build?

Portfolio attribution experience gaps in Gabiley show up when a contractor lists projects without saying which role they held. A bidder may name a mosque, school or water tank as their own work when they supplied labour, acted as a subcontractor, or only poured concrete under another firm's supervision. The reference looks strong until you ask who set out the building, who ran the site and who signed off the finish.

What does portfolio attribution mean on a Gabiley bid?

Attribution is the link between a project name and the role the bidder actually held on it. On a typical bid, a contractor attaches a list: five buildings, two boreholes, a road. The list does not say whether the firm was the main contractor, a labour subcontractor, a materials supplier, or a hired hand on someone else's site. Each label means a different set of skills. A main contractor sets out the works, sequences trades, orders materials and answers to the client. A labour subcontractor follows another firm's programme and does not carry the same load. Ask the bidder to write one line per project: client, location, contract value band, role, start and end month, and the name of the engineer who supervised. If the role line is blank or vague, treat the project as unverified. Confirm the limit of what a bidder can claim under your contract terms with your own adviser, and keep the written role statement with the bid documents.

Which execution risks follow an unclear past role?

When the role is unclear, the client cannot tell whether the crew has run the trade before. The project specification normally requires the same crew to set out, fix reinforcement, pour and cure load-bearing concrete, because each step depends on the one before it. Confirm that requirement with your engineer. A crew that only assisted on a previous tank or slab may not have placed the formwork, checked cover or organised the pour sequence. Those failings show up generally as honeycombing, cold joints, poor falls to a drain, or a finish that does not hold. The programme carries its own risk: a firm that never ordered materials for a project may underestimate lead times for cement, steel or roofing sheets coming into Gabiley. Check the bidder's account by asking for written client references and contacting those clients directly, and ask for the construction programme and material schedule the firm used on a project where it held the main role.

How do you test the claim before you award the work?

Test the claim by separating what the firm owned from what it only touched. Ask for the role statement described above, then pick one project and ask three short questions: who set out the building, who employed the site foreman, and who signed the handover. A real main contractor answers without hesitation. A firm that only supplied labour will not know the setting-out method or the supervisor's name. If the role is still unclear, ask the bidder to price a small enabling package first, such as a store or a boundary wall, and watch how they set out, order and cure. That trial shows capability without committing the whole build. Confirm the specification and acceptance criteria for that trial with your engineer before you award it, since the project's own documents govern, not a rule of thumb.

What to do next

Write a one-page reference check and send it to every bidder on your Gabiley shortlist. Ask for client, role, dates and supervising engineer for each named project. Then call two of those clients and verify the answers against the written statements. Compare the written role statements against what the clients say before you open the priced bids.