The Building Safety Act 2022 – Why Most London Office Refurbishments Are Structurally Exposed

Written by Neil Streets, Founder and Managing Director

Neil Streets is Managing Director of Alphafish and a global leader in real estate delivery. With 20+ years’ experience, he has led £10B+ capital programmes for UHNWIs, developers, and Fortune 500 firms. Known for turning around complex projects and aligning organisations with regulatory and strategic goals.

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The majority of London office refurbishments currently underway are structurally exposed. Not because they are poorly designed. Not because consultants lack competence. Not because contractors are incapable. They are exposed because the governance structure underpinning them has not adapted to the regulatory reality created by the Building Safety Act 2022. Many organisations still treat office refurbishment as a conventional fit-out exercise. In 2026, that assumption is commercially dangerous.

The safety regulatory environment has shifted permanently

The Building Safety Act (BSA) fundamentally changed the accountability landscape in the UK built environment. Although much public discussion has focused on residential high-risk buildings, the ripple effects extend far beyond that category.

Commercial occupiers in London now face:

• Increased scrutiny around design responsibility

• Heightened documentation requirements

• Greater clarity of duty-holder obligations

• Expanded expectations around information traceability

• More cautious insurer behaviour

• Tighter building control oversight

  
  

In complex, multi-storey, mixed-use or technically dense buildings, refurbishment risk has materially increased. Yet delivery structures have largely remained the same.

The false assumption – It’s just a CAT A or B fit-out

In London, office refurbishments are frequently categorised as:

• CAT A refresh

• CAT B reconfiguration

• Shell & core expansion

• Trading floor retrofit

  
  

These labels can create a false sense of procedural simplicity. In reality, even relatively “standard” refurbishments can intersect with:

• Fire strategy modifications

• Compartmentation alterations

• Vertical transportation changes

• Structural interventions (e.g., interconnecting staircases)

• Mechanical and electrical system upgrades

• Façade interface works

  
  

Each of these triggers duty-holder responsibilities under the new regulatory framework. When accountability is fragmented, exposure increases.

Where structural exposure typically sits

Most London office refurbishments become exposed in three areas:

1. Diffused design responsibility

Under BSA-influenced frameworks, the clarity of 'Principal Designer' and 'Principal Contractor' roles is critical. However, in many commercial refurbishments:

• Design evolves incrementally

• Scope responsibility is split across disciplines

• Landlord and tenant interfaces blur accountability

• Documentation trails are incomplete

  
  

Without a single line of governance oversight, responsibility can become diffused across professional silos, creating legal and insurance ambiguity. Ambiguity is risk.

2. Incomplete audit-grade information trails

The regulatory environment now expects traceable decision-making. Boards must be able to demonstrate:

• Why a design decision was made

• Who approved it

• What compliance assessment was undertaken

• How risks were mitigated

  
  

Traditional project reporting is often insufficient. While dashboards and RAG reports describe progress, they do not necessarily demonstrate regulatory robustness. In a post-Grenfell, post-BSA environment, documentation is not merely administrative; it serves as defensive capital protection.

3. Live environment interventions

Many London refurbishments occur within:

• Occupied trading environments

• Mixed-use buildings

• High-security or technically sensitive assets

  
  

Interventions such as interconnecting staircases, plant upgrades or vertical penetrations can interact with building-wide fire and structural strategies. Without coordinated governance between landlord, tenant, consultants and contractor, risk can become embedded unintentionally. The exposure may not materialise during construction.

It may emerge later during audit, transaction, or incident review.

The insurance dimension

Professional indemnity markets remain cautious. Cover for fire, façade and structural elements continues to attract exclusions and increased premiums. Clients often assume their professional team’s PI cover fully protects them.

In reality:

• Limits may be insufficient relative to total capital exposure.

• Exclusions may limit recourse.

• Claims processes may take years to resolve.

  
  

Insurance is not a substitute for structural governance. It is a backstop – and sometimes an imperfect one.

Why this matters to boards, not just project teams

The Building Safety Act is not an operational footnote. It is a governance issue. For regulated, listed or PE-backed organisations, refurbishment exposure influences:

• Audit positioning

• Investor confidence

• Transaction risk

• Lease liability

• Reputational standing

  
  

In a corporate transformation or exit scenario, incomplete compliance documentation can materially affect valuation and due diligence outcomes. The HQ or regional hub is no longer just an operational asset. It is a regulated capital asset.

What structural safety protection actually looks like

Reducing BSA-related exposure in London office refurbishments requires structural alignment — not simply compliance checklists. Key elements include:

Single-line governance authority

A clear commercial and regulatory lead overseeing:

• Design development

• Landlord interfaces

• Contractor obligations

• Compliance documentation

• Gateway approvals

  
  

Fragmentation increases ambiguity. Clarity reduces it.

Early regulatory stress testing

Before procurement strategy is fixed, boards should understand:

• Whether works interact with higher-risk building elements

• What approval pathways will be triggered

• How documentation requirements will scale

• Where latent compliance gaps may sit

  
  

This prevents reactive redesign or programme delay.

Structured approval gateways

Capital deployment should align with regulatory clarity. Funding should move through staged gateways tied to:

• Design freeze

• Compliance confirmation

• Documentation completeness

• Risk sign-off

  
  

This protects capital while maintaining momentum.

Transparent landlord–tenant alignment

In multi-let London buildings, responsibility boundaries are critical. Landlord approvals, fire strategy sign-off and building control engagement must be structurally coordinated. Assumptions create exposure. Alignment removes it.

The London reality

London remains one of the world’s most sophisticated commercial property markets. Yet sophistication in architecture does not always equate to sophistication in governance. The Building Safety Act has raised the bar permanently. Refurbishment programmes structured on pre-2022 assumptions are increasingly vulnerable. Not necessarily to immediate failure. But to latent risk.

Three questions boards should ask before approving refurbishment

Before committing to a major London office refurbishment, boards should ask:

1. Who holds ultimate accountability for regulatory alignment across design and construction?

2. Is our compliance documentation audit-grade and transaction-ready?

3. Where could responsibility ambiguity create future liability?

   
   

If those answers are unclear, structural exposure remains.

Compliance is now a capital strategy issue

The Building Safety Act did not simply introduce new paperwork. It introduced structural accountability. In London’s current regulatory environment, refurbishment governance must be as disciplined as financial governance. Because in complex capital programmes, regulatory exposure is not created by poor intent. It is created by structural ambiguity. And in 2026, structural ambiguity is no longer defensible.

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Read more from Neil Streets

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Neil Streets, Founder and Managing Director

Neil Streets is a recognised leader in strategic real estate and infrastructure delivery. He is the Managing Director of Alphafish, a specialist consultancy advising UHNWIs, developers, and global firms on capital programmes exceeding £10 billion. With over two decades of international experience, Neil has held senior roles at Cazoo, Dow and Amazon, and has directed landmark developments including a £5B new town regeneration and a £2B luxury masterplan in Albania. Known for turning around complex projects and aligning organisations with regulatory reform, Neil is also an expert in high-risk buildings legislation and agile delivery.