What to include in a Stage 4/5 M&E contractor-design brief

Start with what the team is taking on

A stage label is not a complete brief. Before appointing design support, describe the work already done, the duties being transferred and the outputs your team needs next. A drawing set may look substantial while leaving important decisions unresolved.

Supply the employer’s requirements, available design basis, latest drawings, schedules and relevant specifications. Identify the issue status and explain which information the contractor is expected to develop. Keep superseded information separate.

Agree deliverables and interfaces

List the information needed for procurement, coordination, installation and technical review. For each item, agree who prepares it, who provides inputs and when a decision is needed.

The RIBA Plan of Work names Stage 4 Technical Design and Stage 5 Manufacturing and Construction, and recognises that they can overlap. Agree the actual support required during construction rather than relying on the stage number.

• Drawings, schedules, calculations and technical notes within the appointment.
• Specialist design packages and information needed from suppliers.
• Interfaces with architecture, structure and other building services.
• Required coordination meetings, review cycles and issue dates.
• Technical-query handling and site attendance where needed.

Make inherited assumptions visible

For refurbishment or fit-out work, identify which existing systems the design relies on. Record whether their arrangement and operating condition have been established. If records are uncertain, define the review or validation needed before progressing the dependent design.

Ask the team to identify the decisions holding up the programme. A short, current list of unresolved questions can be more useful at the first meeting than an unfiltered document archive.

Prepare a useful first enquiry

Send Ben the building location, project stage and proposed scope, together with a description of the current information. Explain the next procurement or construction milestone.

Engin can then discuss the initial review, required design work and fee basis. The appointment should leave both parties clear about what will be issued, what depends on others and what lies outside the agreed role.