The Building Safety Act introduced a more rigorous approach to the design, construction and approval of higher-risk residential buildings. Gateways 2 and 3 now sit at the centre of this system, establishing defined points at which compliance, competence and evidence must be clearly demonstrated.
For fire safety delivery, the gateway process brings greater structure and accountability. It formalises practices that projects should already be following and reinforces the importance of getting fire safety right from the earliest stages, through to completion and occupation.
Gateway 2: Fire Safety as a Design Certainty
Gateway 2, which received updated in October 2025, takes place prior to construction and requires the Building Safety Regulator to be satisfied that the proposed design complies with Building Regulations. This includes the fire and life safety strategy, associated system designs and how those systems will be delivered on site.
The key change is critical fire safety decisions must be resolved at this point. Designs are expected to be complete, coordinated and capable of being constructed exactly as approved. Fire strategies, detection and alarm coverage, system interfaces and assumptions must be clearly defined and supported by appropriate technical justification.
This approach reduces reliance on late-stage design changes and creates a more stable foundation for construction. When fire safety systems are fully considered and integrated at Gateway 2, the risk of downstream issues, redesign or non-compliance is significantly reduced.
Gateway 3: Demonstrating Compliance Through Evidence
Gateway 3 occurs at the end of construction and is the final check before a higher-risk building can be occupied. At this stage, the focus shifts from design intent to proof of delivery.
Fire safety systems must be installed in line with the approved Gateway 2 design, and any changes made during construction must be clearly recorded, assessed and approved. As-built drawings, commissioning records, test results and system certification form a critical part of the submission.
The gateway process reinforces the principle that compliance must be demonstrable. Clear, accurate and traceable documentation is essential, providing assurance that systems perform as intended and can be effectively maintained throughout the life of the building.
Fire Safety Within a Structured Regulatory Framework
Gateways 2 and 3 place fire safety firmly within a controlled and auditable regulatory framework. Responsibilities are clearer, expectations are higher and the emphasis on evidence supports safer outcomes for residents and building owners.
For those involved in fire safety design and delivery, the gateway process highlights the importance of early coordination, disciplined change control and consistent documentation. These are not new principles, but they are now formally required and subject to regulatory scrutiny.
Looking Ahead
The gateway regime sets a clear direction for the future of building safety in the UK. By embedding fire safety into design decisions, construction practices and final handover, the industry is moving towards a more transparent and accountable model of delivery.
Amthal is working with contractors from initial design to project completion, supporting this approach and aligning our fire detection and alarm services with the requirements of the gateway process, focusing on clarity and evidence-led delivery to guarantee compliance.
