A Gateway 2 application for higher-risk building work must contain enough information for the Building Safety Regulator to assess both the proposed design and the arrangements for maintaining Building Regulations compliance during construction. Passing BSR's initial validation check does not mean the application has been approved.
The distinction matters because the latest BSR data shows improving approval rates but much longer real-world determination periods than the basic statutory assessment windows. In the 12 weeks to 31 August 2026, new higher-risk buildings and conversions reached a 92% approval rate, yet the median approval time was 22 weeks. The statutory assessment period for a new HRB application is normally up to 12 weeks unless an extension is agreed.
Active construction works with cranes and scaffold protection in the City of London. Photograph: London Construction Magazine
What documents are required for a Gateway 2 application?
Gateway 2 is the industry name for the building control approval process for higher-risk building work in England. Building Safety Regulator guidance on preparing an application sets out the information that applicants need to provide, while the legal framework sits within the Building (Higher-Risk Buildings Procedures) (England) Regulations 2023. The precise package depends on the project. A new higher-risk building, Category A work to an existing HRB, Category B work, a staged development and a project proposing partial occupation do not necessarily require identical documents.
| Application information | Purpose | When required |
|---|---|---|
| Application and dutyholder details | Identifies the client, Principal Designer, Principal Contractor, building and proposed work | Core application information |
| Plans, drawings and site location plan | Defines the work and provides the technical evidence needed to assess compliance | Core application information |
| Building Regulations compliance statement | Explains how the proposed work will meet the applicable functional requirements | Core application document |
| Construction control plan | Sets out how Building Regulations compliance, competence, cooperation and quality will be managed during construction | Core application document |
| Change control plan | Explains how changes to the approved design will be identified, assessed, recorded and controlled | Core application document |
| Competence declaration | Confirms the client's reasonable steps to assess the competence of the Principal Designer and Principal Contractor | Core application document |
| Mandatory occurrence reporting plan | Sets out the system for identifying and reporting qualifying structural and fire-safety occurrences | Core application document |
| Fire and emergency file or fire compliance information | Provides the required fire-safety evidence | Depends on the category and scope of work |
| Staged work information | Defines the stage being submitted and how later stages relate to it | For staged applications |
| Partial completion strategy | Explains how parts of the building can be safely occupied while other building work continues | Where partial occupation is proposed |
LCM clarification: the application does not need a standalone document simply because the industry has given it a familiar name. “Golden thread”, structural evidence and fire-engineering information may run through several statutory documents, plans and records. Project teams should work from the actual BSR requirements rather than assembling a checklist from consultancy terminology.
The Construction Control Plan is not a CDM Construction Phase Plan
This is one of the clearest traps in the Gateway 2 process. BSR expressly states that applicants should not submit a CDM construction phase health and safety plan instead of the Construction Control Plan. The regulator warns that doing so can result in the application being rejected.
The two documents regulate different matters. A Construction Phase Plan manages health and safety during construction under CDM 2015. The Gateway 2 Construction Control Plan deals with how the project will control Building Regulations compliance, competence, design-to-construction information and the quality of the work being built. LCM's analysis of Building Regulations Principal Designer evidence at Gateway 2 explains why appointing the correct dutyholder is only the beginning; the submission still needs to demonstrate effective design coordination and regulatory control.
What happens after a Gateway 2 application is submitted?
The application passes through two distinct stages before a decision: validation and assessment. BSR's building control approval guidance says it first checks whether the required information has been supplied. If information is missing, BSR may ask for it or reject the application. An application containing the required information is deemed valid and moves to assessment. Validation is not approval. Work must not start merely because an application has passed the initial completeness check.
BSR uses multi-disciplinary teams to support its regulatory decisions. Official guidance on the regulator's MDT model identifies roles including BSR regulatory leads, case officers, Registered Building Inspectors and fire-safety specialists, with structural engineers and other technical specialists brought in where required. Registered Building Inspectors assess the plans, details and documents against the applicable Building Regulations and support statutory consultation. The regulator is assessing the evidence supplied; it is not redesigning the building for the applicant. The client, Principal Designer, Principal Contractor and individual designers retain their own statutory responsibilities for compliant design and construction.
How long should a Gateway 2 application take?
BSR states that, unless an extension is agreed, it will take up to 12 weeks to assess an application for a new higher-risk building and up to eight weeks for an existing higher-risk building. Those are statutory assessment periods, not guaranteed real-world approval times. The difference is visible in BSR's latest published application data, covering the 12 weeks to 31 August 2026.
| Gateway 2 category | Decisions | Approval rate | Median approval time |
|---|---|---|---|
| New HRBs and conversions | 50 | 92% | 22 weeks |
| External remediation | 118 | 89% | 33 weeks |
| HRB internal works | 143 | 78% | 32 weeks |
| NHS internal works | 22 | 82% | 22 weeks |
Those figures need context. BSR says older cases continue to raise the overall medians. Internal-work applications submitted during 2026 had reached a much shorter 16-week median, while some recent NHS applications were being approved within the statutory eight-week period. LCM tracks the changing figures separately through its Gateway 2 Approval Index. Keeping live performance data separate from the legal requirements prevents an evergreen compliance guide from confusing statutory deadlines with temporary regulator performance.
Why are Gateway 2 applications rejected or delayed?
The regulator's published criteria for validating, approving and rejecting applications provide a useful answer. BSR must assess whether the submission is consistent with the procedural regulations, sufficiently detailed to determine Building Regulations compliance, and supported by adequate strategies, policies and procedures. This means delay is not limited to a missing form. Problems can arise where drawings do not contain enough detail, structural or fire information conflicts across documents, specifications remain unresolved, or the compliance statement describes an intention to comply rather than showing how the proposed design actually achieves compliance.
Existing-building work creates another risk. BSR asks applicants to assess how the proposed work affects the existing building and to support unavoidable assumptions with surveys or inspections. An application built around untested assumptions can therefore create further information requests before the regulator can reach a decision. Poor coordination can also turn an otherwise substantial submission into a difficult assessment. If the fire strategy, architectural layouts, structural design and services information describe different design conditions, the regulator does not have one coherent proposal to approve. LCM's earlier analysis of common Gateway 2 submission mistakes examines that evidence problem in more detail.
Approved, approved with requirements or rejected
A Gateway 2 decision is not always a simple yes or no. If BSR approves the application, the approved building work can move towards commencement. If it approves the application with requirements, work can start on the approved parts, but work subject to an outstanding requirement must not begin until BSR is satisfied that the requirement has been met.
BSR says requirements can include additional information, revised plans or a restriction preventing a particular part of the work from starting until further evidence is accepted. A rejected application cannot proceed to construction. BSR says rejection can follow where the application does not contain enough detail to demonstrate compliance or does not show effective strategies for managing it. An applicant that disagrees with a decision can request a review and, after that process, may appeal to the First-tier Tribunal.
Gateway 2 approval still does not mean work starts immediately
Approval clears the building control application; it does not prove that physical construction has started. Before approved work begins, the required notice of intention to start must be submitted to BSR at least five working days beforehand. For staged applications, the same principle applies stage by stage. BSR permits projects to divide certain new higher-risk building applications into stages, but the detailed application for each stage must be approved before building work within that stage starts.
The practical next step before submission is therefore an evidence audit rather than a document-counting exercise: confirm the correct application route, check that every mandatory document is present, reconcile the drawings and specifications across disciplines, test the Building Regulations compliance statement against the technical evidence and make sure the Construction Control Plan, competence declaration and change-control arrangements describe the project actually being delivered. Only after BSR has validated, assessed and approved the relevant application or stage should the pre-start notification process begin.
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Expert Verification & Authorship: Mihai Chelmus Founder & Editor, London Construction Magazine | Construction Testing & Investigation Specialist |