JCT Minor Works Contract: What It Is and When You Need One

• A building contract is a legally binding agreement between a client (the employer) and a contractor that sets out:
• •What work is to be done (the scope)
• •What information the contractor will work to (drawings, specification)
• •How much the work costs and how payment will be made
• •Who is responsible for what
• •What happens when things go wrong — defects, delays, disputes, instructions to change the scope

**Without a written contract**, the legal basis for your project is implied terms and whatever can be established from email threads and quoted figures — which is an extremely weak position if a dispute arises. A High Court or Technology and Construction Court (TCC) judge will be looking for a written agreement, a clear scope, and a priced schedule. An email chain with 'as discussed' references does not substitute for these.

• **The risk to the client without a proper contract**:
• •No agreed mechanism for handling variations (changes to scope) — the contractor can refuse to do additional work, or can charge whatever they want for variations
• •No agreed payment terms or payment notice requirements — late payment or payment before work is done
• •No agreed defects liability period — the contractor can argue their obligation to return and fix defects has expired
• •No agreed programme — no basis for claiming delay damages if the project overruns
• •No agreed dispute resolution mechanism — if the relationship breaks down, costly litigation is the only route

The Joint Contracts Tribunal (JCT) is a body that produces standard form building contracts for the UK construction industry. The JCT Minor Works Building Contract (MW) is designed for 'relatively simple building work of short duration where the work is specified by the Employer, using drawings and/or a specification.'

• **When JCT MW is appropriate**:
• •Domestic renovations, extensions, and refurbishments
• •Projects up to approximately £1.5–£2m in value (larger projects typically use JCT Intermediate, JCT Standard, or JCT Design and Build)
• •Projects with a defined scope set by the employer (or their architect) — the contractor is building to a design, not designing themselves
• •Projects where a contract administrator (architect or quantity surveyor) is appointed to manage the contract

**Key provisions in JCT MW**:

*Contract documents*: The contract is formed by the Contract Agreement, Recitals, Articles, Contract Particulars, Conditions, and the contract documents (drawings, specification). Everything agreed must be in or attached to the contract — verbal agreements not in writing have very limited legal weight.

• *Payment*: JCT MW uses stage payments with a payment due date, a 'payment notice' or 'pay less notice' mechanism under the Housing Grants, Construction and Regeneration Act 1996 (HGCRA). This means:
• •The contractor submits a payment application
• •The contract administrator issues a payment notice confirming the amount due
• •If the employer wants to pay less than the notified amount, they must issue a 'pay less notice' before the final date for payment
• •If the employer pays less without issuing a valid pay less notice, the full notified sum becomes immediately due — and the contractor can suspend works after proper notice

*Variations*: Additional or different work must be instructed in writing (a Variation Instruction or VI). The contractor prices the variation and the contract administrator agrees or adjusts the valuation. Oral instructions should be confirmed in writing.

• *Practical Completion*: When the works are substantially complete, the contract administrator certifies Practical Completion. This is the trigger for:
• •The defects liability period beginning (typically 3 or 6 months for domestic works)
• •Release of the retention (if any — typically 3–5% held back from payments)
• •The employer taking possession of the works

*Defects Liability Period (DLP)*: After practical completion, the contractor remains responsible for returning to rectify defects that appear. At the end of the DLP, the contract administrator issues a Certificate of Making Good, and the final retention is released.

• *Insurance*: JCT MW requires both parties to maintain appropriate insurance:
• •Works insurance (covering the works during construction — typically the contractor's responsibility for new works; employer's existing structure if works are to an existing property)
• •Employer's Liability insurance (if the contractor employs workers)
• •Public Liability insurance (protecting third parties)
• •Professional Indemnity insurance (for the contract administrator)

Whether you are using JCT MW or a contractor's own bespoke contract, check the following before signing:

**1. Is the scope fully defined?** The contract should reference a complete set of drawings and a specification (or schedule of works). If the contract says 'as discussed' or refers to a quote document without a detailed breakdown, the scope is not defined and disputes about what's included are almost inevitable.

**2. Are the payment terms clear and fair?** Stage payments should be linked to completion of defined stages of work — not to time alone (e.g., monthly) or to the contractor's cashflow needs. Typical domestic stages: mobilisation/preliminaries; foundations; structural frame; first fix; second fix and finishes; practical completion; retention release.

**3. Is there a retention clause?** Retention (typically 3–5% of the contract value) is held back from interim payments to provide a financial incentive for the contractor to return and rectify defects. If the contractor's contract has no retention provision, ask for one.

**4. What is the defects liability period?** For domestic work, a 6-month DLP after practical completion is standard. Shorter periods (3 months) are sometimes proposed by contractors — negotiate for 6 months minimum.

**5. How are variations handled?** The contract should specify that variations must be instructed in writing and agreed in price before being carried out. If there is no variation mechanism, the contractor can claim additional cost for anything beyond the narrowest reading of the original scope.

**6. What are the dispute resolution provisions?** JCT MW includes adjudication as the default dispute resolution mechanism under the HGCRA. Adjudication is fast (typically 28 days to a decision) and relatively inexpensive compared to litigation. If the contractor's contract proposes to remove or limit adjudication, this is a red flag.

**7. Is there a programme?** The contract should include an agreed programme with start date, completion date, and key milestones. Delay damages ('liquidated and ascertained damages' or LADs) can be specified — a fixed daily rate the contractor pays if they overrun. For domestic projects, LADs are rarely used but a completion date matters.

**For design-and-build projects (where the contractor designs and builds)**: JCT also produces a Design and Build Contract (DB) where the contractor takes responsibility for both design and construction. In this case, the contractor carries the design risk — which changes the professional indemnity insurance requirements and the approval structure significantly.