AI for Subcontractor Management
Use AI to draft subcontractor scope documents, evaluate performance, and manage subcontract correspondence.
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5 AI workflows for subcontractor management
Before you sign, check how the main contractor pays: the payment league table on constructionrating.co.uk.
How AI helps with subcontractor management
AI helps with subcontractor management by drafting scopes of works, lining up quotes side by side and building the weekly coordination schedule from your programme and trade notes. It also helps with the paperwork that follows: summarising a subcontract for the site team, chasing RAMS and programmes, and keeping correspondence clear and dated.
It can't judge whether a subbie has the people to deliver, decide who gets the package, or tell you what the subcontract means when things go wrong. Payment, deductions, notices and termination have their own procedures under the subcontract and the Construction Act. Check your contract and take advice before anything with money or notices attached goes out.
Start with one package, such as the next scope you need to issue. Quotes and rates are confidential, so use a business account with data controls switched on, not a personal one, and check every line against the drawings and specification.
Where AI helps most
- Scopes of works: inclusions, exclusions, attendances, specification references and deliverables, drafted from your tender documents.
- Comparing quotes: tenders lined up side by side, with exclusions, qualifications and scope gaps flagged so you can level them.
- Coordination schedules: weekly activities by trade, with access, plant, hoist bookings and interfaces.
- Subcontract summaries: the key terms in plain English for the site team, such as payment dates, retention, notices and insurance.
- Correspondence: clear, dated letters chasing documents, confirming instructions or raising performance concerns.
- Performance reviews: each subcontractor reviewed on programme, quality, safety and paperwork.
Where to be careful
- Contract: letters about delay, deductions, contra charges or termination can have legal effect. Check your contract and take advice before sending them.
- Scope gaps: AI misses the things that cost money later, such as attendances, design responsibility, temporary works and making good. Read the scope against the drawings, specification and preliminaries.
- Confidentiality: one subcontractor's prices must never reach another. Keep quotes in a business account with data controls, never a personal one.
- Judgement and safety: AI can't weigh a firm's reputation, resources or track record, and it can't check competence under CDM 2015. Award decisions and pre-start checks stay with you.
Frequently asked questions
- What should a subcontractor scope of works include?
- What's included and excluded, the drawings and specification it's based on, attendances, design responsibility, programme and key dates, and the documents you need back, such as RAMS and O&M information. Spell out the interfaces with other trades: that's where gaps open up.
- How do you compare subcontractor quotes?
- Put them on the same basis first: same scope and programme, with every exclusion and qualification listed and priced. The lowest headline figure isn't always the cheapest once the gaps are filled. Then look at resources, attendances and payment terms before you decide.
- What is a contra charge in construction?
- A charge a main contractor makes against a subcontractor for costs the subcontractor caused, such as cleaning, damage or putting right defective work. It needs a basis in the subcontract, notice in line with its terms and evidence of the cost. Deducting it from a payment usually needs a valid pay less notice. Check your contract and take advice.
- What are attendances in a subcontract?
- The facilities and services the main contractor provides to the subcontractor, such as welfare, power, water, storage, scaffolding, hoists, waste removal and setting out. If the scope doesn't say who provides what, expect an argument.
- Can a main contractor pay subcontractors only when they get paid?
- Generally no. The Construction Act makes pay-when-paid clauses ineffective in most cases, with a narrow exception for insolvency further up the chain. If the subcontract doesn't set out a compliant payment mechanism, the Scheme for Construction Contracts fills the gap. Check your contract and take advice.
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