Getting the design and build tender process right: What every client should know

The design and build tender process is about finding the right partner, with the right approach, to deliver the right outcome for the organisation.

The decisions made at tender stage directly influence:

• Cost certainty:  how accurately a budget can be predicted and controlled
• Workplace design quality: how well the finished space serves the people and the business
• Programme reliability:  whether the project is delivered on time
• Construction risk: who carries it, and how well it's managed
• Long-term performance: how the space functions for years to come

When the focus is solely on the bottom line, projects win on paper and lose in practice. Variations, delays, and disputes almost always cost more than the apparent savings made at tender. The most successful projects begin with a process built on clarity, collaboration, and considered selection.

Give contractors what they need to price accurately

The tendering process works best as a two-way street. The more clearly and honestly requirements are communicated, the more accurately and confidently design and build companies can respond.

The information that makes the biggest difference includes:

• A realistic budget guide:  an exact figure isn't always necessary, but sharing a budget range helps contractors calibrate proposals appropriately. Withholding budget information entirely often leads to inflated or heavily caveated tenders.
• Access to the site or existing space: allow adequate time for site visits so contractors can properly assess conditions, constraints, and opportunities.
• Clarity on decision-making: who is the key contact? Who has sign-off authority? Understanding this helps contractors tailor their approach.
• Honest timescales: if the programme is ambitious, say so. Experienced office interior design specialists will advise on what's achievable and what isn't, which is far more valuable than a contractor who simply agrees with whatever is asked.
• Access to end-users or stakeholders:  where possible, enable contractors to speak with the people who will use the space. This insight often leads to better, more considered design proposals.

Risk allowances and assumptions

How has the contractor handled uncertainty? A well-structured tender will be clear about what's included, what's excluded, and where contingency has been applied. Be cautious of tenders that appear to have ignored risk rather than managed it.

Experience and team

What relevant projects has the team delivered? Who specifically will be working on the project? A strong portfolio at company level counts for little if the project is handed to an inexperienced team.

Commercial transparency

Is the pricing clear and broken down in a way that can be understood and interrogated? Transparency at tender stage is a strong indicator of how a contractor will behave throughout the project.

A well-managed design and build tender process typically follows a clear sequence:

• Define project objectives, scope, and constraints: before anything else
• Prepare a comprehensive employer's requirements or tender brief: covering all the information contractors need to price accurately
• Issue the tender with a realistic response period: complex projects deserve adequate time for thoughtful responses
• Hold a briefing session or site visit: allow contractors to ask questions and gain a genuine understanding of the project
• Receive and review submissions on a consistent basis: use a structured assessment framework that goes beyond price
• Interview shortlisted contractors:  meet the team, explore the approach, and assess the working relationship
• Make a decision based on overall value: not just the bottom line