Good Manufacturing Practice environments — cleanrooms, laboratories, pharmaceutical production facilities, and controlled manufacturing spaces — are among the most demanding construction projects a contractor can deliver. The tolerances are tighter, the regulatory requirements are more complex, and the consequences of getting it wrong are measured not just in cost and programme overruns, but in compliance failures that can delay or prevent a facility from becoming operational.
In this context, the choice of procurement route is not a secondary decision. It is fundamental to whether a project delivers on time, to specification, and with the documentation and commissioning evidence required for regulatory approval. Increasingly, the answer for GMP clients is design and build.
The case for single-point accountability
Traditional procurement — where the client appoints a design team, produces a full set of tender documents, and then appoints a contractor to build — works well in many construction contexts. But in GMP environments, the interfaces between design and construction are where problems occur. A specification gap between the architect's intent and the MEP engineer's detailing. A sequencing conflict between the cleanroom fit-out and the building envelope. A commissioning requirement that wasn't anticipated during design development.
Design and build eliminates these gaps by placing accountability for both design and construction with a single entity — the contractor. The contractor manages the design consultants, coordinates the specialist subcontractors, and takes responsibility for delivering a facility that meets the client's User Requirement Specification (URS) and the applicable regulatory standards. There is no finger-pointing between designer and builder, because they are the same team.
In a GMP environment, the cost of a design-construction interface failure is not a variation — it is a compliance risk. Design and build removes that interface entirely.
Programme compression
GMP facilities are almost always programme-critical. Whether the driver is a product launch date, a regulatory submission timeline, or a capacity constraint in an existing facility, the client typically needs the building operational by a fixed date — and that date does not move.
Design and build enables programme compression in ways that traditional procurement cannot. Because the contractor is involved from the earliest stages of design, construction can begin before the design is fully complete — a process sometimes referred to as fast-track delivery. Enabling works, foundations, and structural steel can proceed while the MEP design is being finalised. This overlap, managed carefully through a robust pre-construction process, can reduce the overall programme by weeks or months.
The key word is "managed carefully." Fast-track delivery in a GMP environment requires a contractor with genuine pre-construction capability — the ability to sequence work, manage design information flow, and coordinate specialist packages in a way that maintains compliance throughout. It is not something that can be improvised on site.
Integrated commissioning
Perhaps the most overlooked advantage of D&B in GMP environments is the integration of commissioning and qualification (C&Q) into the project from the outset. In a traditional procurement model, C&Q is often treated as a separate workstream that begins after construction is substantially complete. This creates a bottleneck at the end of the programme — precisely the point where the client can least afford delay.
In a well-structured D&B project, the commissioning strategy is developed during pre-construction and embedded in the construction programme. Installation Qualification (IQ) documentation is prepared in parallel with installation. Operational Qualification (OQ) protocols are agreed before systems are energised. The result is a facility that transitions from construction to qualification seamlessly, rather than hitting a wall at handover.
What the contractor needs to deliver
Design and build is only as effective as the contractor delivering it. In GMP environments, the contractor needs several things that go beyond standard construction capability. A pre-construction team that understands regulatory requirements and can translate a URS into a buildable design. Management systems — health & safety, quality, environmental — that are robust enough to satisfy client and regulatory audits. A supply chain of specialist subcontractors with GMP experience. And a project controls framework that tracks progress, manages risk, and provides the documentation trail that GMP clients and their validation teams require.
Without these, D&B in a GMP environment is just a contractual structure. With them, it is a delivery model that gives clients programme certainty, cost certainty, and regulatory confidence.
CONROY's approach
Design and build is central to how CONROY operates across all five of our sectors, and it is particularly well suited to the pharmaceutical and life sciences work we deliver. Our management systems are ISO-aligned, our pre-construction process is structured to handle the complexity of GMP environments, and our delivery model is built around director-level accountability from first engagement through to commissioning and handover.
If you are planning a GMP facility and want to explore how design & build could work for your project, we would welcome the conversation.