Structural Risk Assessments

One provider. Every risk covered. Complete clarity for your BAC submission.

Structural, fire, H&S, water, and asbestos — aligned into one regulator-ready submission.

Book A Call

A Structural Problem

74% of Building Assessment Certificates submissions (BACs) are failing — and many of those failures are due to missing or inadequate Structural Risk Assessments (SRAs).

Under the Building Safety Act, dutyholders must evidence both fire and structural safety risks within their BAC submission. Without this, buildings face:

  • Refusals or significant delay

  • Increased scrutiny and follow-up questions

  • Additional costs

  • Barriers to insurance

  • Potential enforcement action

  • Concern from residents

  • Rising uncertainty about what the regulator will expect next

And the biggest gap the Regulator is calling out? Structural safety.

Many submissions have ignored structural risk altogether, or assumed that a Fire Risk Assessment alone was enough.
It isn’t, and neither is a Condition Survey.
Structural safety must be assessed — and evidenced — by Chartered Structural Engineers.

An SRA is a core requirement of a BAC.

The Tetra Solution

A Structural Risk Assessment that completes your BAC submission

Most BAC failures stem from missing structural evidence. Tetra solves this directly.

With 74% of Building Assessment Certificates refused — many for missing or inadequate structural evidence — dutyholders can’t afford uncertainty. 

Only Tetra unites directly-employed, award-winning consultants and Chartered Structural Engineers into one integrated team — delivering a complete, regulator-ready BAC application across structural, fire, H&S, water, and asbestos. The calm, coordinated route to BAC success.

Our Chartered Structural Engineers provide:

  • A structured, regulator-ready Stage 1 Structural Risk Assessment

  • Which can only be delivered by Chartered Structural Engineers

  • Detailed Stage 2 investigation where evidence is incomplete or risk is identified

  • Clear Safety Case contributions: risk registers, arguments, evidence trails

  • Proportionate recommendations aligned with the Building Safety Regulator’s expectations.

The result: confidence instead of uncertainty — and a submission that stands up to scrutiny.

Behind every failed BAC is uncertainty. Tetra replaces that uncertainty with clarity, evidence, and confidence — so nothing is missed, and everything stands strong.

Managing Individual Blocks or Large Portfolios?

One approach. Two audiences. Complete clarity for every portfolio.

Block & Property Managers

For those managing residential blocks day-to-day who need clarity, speed, and confidence.

Tetra helps when you need:

  • Absolute clarity on what the BSR expects

  • Fast turnaround to keep you compliant and ahead of the BSR

  • Plain-English findings that tell you what matters now

  • Early identification of issues and clear next steps

  • Confidence that every part of the building is properly assessed

Corporate Property & Compliance Teams

For larger organisations managing mixed portfolios who need consistency, governance, and assurance.

Tetra supports you when you need:

  • A defensible SRA methodology aligned to BSR expectations

  • High-quality consistency across your entire portfolio

  • Clear prioritisation that informs capital planning

  • Reporting that stands up to Boards, audits and external scrutiny

  • Consultants who understand both regulation and real-world risk

Tetra SRAs: Regulator Ready

Every Tetra Structural Risk Assessment is designed to align with expectations from the Building Safety Regulator, and forms a core component of your BAC submission.

Stage 1 Structural Risk Assessment:

  • Review of all available structural record information

  • High-level design checks of key structural elements

  • Non-intrusive site visit to inspect for potential structural risks

  • Assessment of fire or environmental impacts on structural integrity

  • Identification of hazards and likelihood of failure

  • Clear, proportionate, evidence-led recommendations

  • Guidance on whether further investigation is required

Where required, Stage 2 (intrusive) assessments provide deeper investigation, in-situ testing, and advanced analysis to confirm structural performance.

Book A Call to Find Out More

Why Choose Tetra?

Everything the regulator expects — in one integrated service

Led by chartered structural engineers

Regulator-ready BAC submissions

Proportionate, evidence-led methodology

Directly employed, award-winning consultants with successful BAC submissions

One partner, one Golden Thread, no conflicting advice

The Proof: Five Successful BACs, and Counting

We now have five successful BACs across our clients’ portfolios — and counting.

Each one gives dutyholders and residents the confidence that their building meets the requirements of the Building Safety Regulator.

What’s becoming clear:
Navigating the building safety regime isn’t just about compliance — it’s about leadership in uncertainty.
It’s about bringing clarity to confusion, structure to risk, and confidence to the people who live and work in these buildings.

Five BACs is a strong start. We’ll continue helping clients move from uncertainty to approval with the detail, pace, and pragmatic support the regime demands.

If you’d like practical insights, templates, or examples of what a successful BAC journey looks like, we’re happy to share what we’re learning.

Book a Call

The Clients Who Trust Us

Next Steps

If you’ve been called forward by the Regulator, concerned you might be, are preparing your BAC submission — or want clarity on structural gaps — speak to our team.

We’ll help you identify and resolve structural gaps before the Regulator calls.

Book a Call

Structural Risk Assessment (SRA) FAQs for Building Safety Act and BAC Submissions

What is a Structural Risk Assessment and why is it required for a BAC?

A Structural Risk Assessment (SRA) is a review of a building’s structural form, condition, integrity, and likelihood of failure. It identifies structural hazards, evaluates their consequence and probability, and provides proportionate, evidence-led recommendations.

Under the Building Safety Act, dutyholders must evidence both fire and structural safety within their Building Safety Case. Many BAC submissions have failed because the structural component was missing or inadequate. The Regulator now expects a clear, stand-alone SRA carried out by a competent Chartered Structural Engineer, referenced directly in the Safety Case Report. SRAs are no longer optional for HRBs, they are essential.

Without a proper SRA, a BAC submission is unlikely to meet the required standard.

Who is qualified to carry out a Structural Risk Assessment?

A Structural Risk Assessment must be carried out by a Chartered Structural Engineer (CEng, MIStructE, MICE or equivalent). These professionals have the competence, experience, and formal accreditation required to assess structural performance and risk.

General building surveyors are not qualified to complete SRAs. Condition surveys, dilapidation reports, or visual inspections alone do not meet Regulator expectations for structural safety.

Tetra’s SRAs are led exclusively by Chartered Structural Engineers.

How is a Structural Risk Assessment different from a Condition Survey?

A Condition Survey looks at defects, deterioration, and general building condition. It does not assess the probability of structural failure, the adequacy of load paths, or the underlying structural system.

A Structural Risk Assessment:

  • evaluates the building’s structural form and load paths

  • considers design assumptions and potential failure modes

  • assesses environmental and fire impacts on structural performance

  • determines likelihood and consequence of structural failure

  • provides evidence needed for a BAC submission

In short: a Condition Survey describes what you can see; an SRA assesses how the structure will perform.

Want to learn more? We’ve prepared a one-page guide: Condition Survey vs SRA. Click here to download it.

What evidence does the Regulator expect in the structural section of a BAC submission?

The Building Safety Regulator expects:

  • a stand-alone Structural Risk Assessment

  • clear identification of structural hazards

  • assessment of likelihood and consequence of failure

  • proportionate recommendations and actions

  • evidence that competent professionals (e.g., CEng, MIStructE) completed the work

  • integration with the Safety Case: risk registers, arguments, and evidence

  • transparency where information is missing, incomplete, or uncertain

The key requirement is the ability to prove that structural risks are known, controlled, and monitored.

Do I need a Structural Risk Assessment for buildings under three years old?

No — not if the building is under three years old and you already hold full structural design, as-built, and handover information. In these cases, the Regulator accepts that the structural risk is already clearly documented. However, many dutyholders still ask us to review this information to confirm completeness and highlight any gaps before preparing their Building Safety Case. If anything is missing or unclear, we can produce a proportionate Stage 1 assessment to keep your BAC submission on track

How long does a Structural Risk Assessment take?

Timeframes vary based on building size, complexity, and the completeness of existing information.

Typical timeframes:

  • Stage 1 SRA: 2–3 weeks

  • Stage 2 intrusive detailed investigations: 2–6 weeks depending on contractor access, testing, and analysis

If information is missing (drawings, calculations, construction data), the process may take longer, as the Regulator expects the structural story to be complete and evidenced.

Tetra will scope and confirm exact timescales at the outset.

What happens if structural risks or defects are identified?

If risks are identified, the SRA will:

  • explain the hazard clearly

  • assess likelihood and severity

  • recommend proportionate control measures

  • advise whether further investigation (Stage 2) is needed

  • provide evidence to support prioritisation

In serious cases, recommendations may include temporary measures or remediation planning. The key is that risks must be identified, understood, controlled, and evidenced for the BAC submission.

Tetra works with you to ensure risks are addressed in a way that meets Regulator expectations.

Can Tetra integrate the Structural Risk Assessment into my full BAC submission?

Yes. Tetra is one of the few providers able to deliver all core assessments in-house — structural, fire, H&S, water, and asbestos — and integrate them into a complete, regulator-ready Building Safety Case.

Your Structural Risk Assessment is inserted directly into:

  • the Safety Case Report

  • the Risk Register

  • the Golden Thread

  • the claim / argument / evidence structure

This ensures consistency, avoids conflicting advice, and reduces follow-up questions from the Regulator.

Do all higher-risk buildings need a Structural Risk Assessment?

Yes. Any building classified as a Higher-Risk Building (HRB) under the Building Safety Act — typically 18m+/7+ storeys — must evidence structural safety.

As the regime evolves, more buildings are likely to fall within scope (11m+ has been discussed as a possibility). Proactive assessment reduces future risk and avoids last-minute panic when the Regulator calls.

What information do I need to provide for an SRA?

Useful information includes:

  • original structural and architectural drawings or calculations

  • as-built information or construction records

  • previous surveys or reports

  • fire strategy or compartmentation information (for load-bearing impacts)

  • the claim / argument / evidence structure

If information is missing, Tetra can help reconstruct the structural story or recommend proportionate intrusive investigation.