Building Safety Regulator flags 10 high-rise schemes caught in collapse of building control firm

November 7, 2025
by News on the Block Editorial Team
News On the Block

The Building Safety Regulator (BSR) has identified at least 10 high-rise residential schemes that are currently in limbo following the sudden collapse of building control firm Assent Building Control — alongside its registered subsidiaries.

What’s happened?

– Assent Building Control, together with its subsidiaries LB Building Control and Oculus Building Consultancy, have ceased trading.
– The BSR says it is currently aware of 10 “Higher-Risk Building” (HRB) projects that these firms were handling and which are now held under the pre-HRB transition model.
– These are buildings at least seven storeys high or over 18 metres with more than one residential unit — classed as HRBs under the new regime.
– The regulator says it is working to reallocate resources and ensure continuity: “While the cases … will need to be reallocated, we do not envisage a knock-on impact on our overall Gateway 2 work.”

Why this matters for leaseholders and freeholders

For those involved in residential leasehold property, including freeholders, managing agents and residents:

  • Projects stuck at this stage may face delays, potentially increasing costs, interest charges and planning risk.

  • If the building control/approval process is interrupted, there may be uncertainty about compliance, risk, and insurance implications specific to HRBs.

  • It underscores the importance of due diligence in choosing the right building control and regulatory partners for new build or refurbishment of tall blocks.

  • Freeholders/managing agents should monitor if any of their schemes fall within this affected cohort or use this as a prompt to review the status of their high-rise projects under the HRB regime.

  • For leaseholders: any delay in approval or completion may impact service charges, remediation responsibilities, timing of occupation and possibly resale values in tall blocks.

What to watch next

  • The BSR is still confirming the full number of impacted schemes.

  • It is vital for stakeholders in affected buildings to liaise with the regulator or registered building inspectors (RBIs) involved to ensure there is clarity on next steps.

  • This event adds pressure to an already challenging approval environment for tall residential schemes under the transitional HRB framework.

  • Freeholders and managing agents should review whether their blocks meet the HRB definition and confirm building-control appointment status, risk-management arrangements and insurance cover accordingly.

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