Key Building Information (KBI) is prescribed information about a higher-risk building that must be provided to the Building Safety Regulator. SI 2023/396 sets out 16 categories (regs 3–18) and a 28-day submission window from registration. This guide summarises what Accountable Persons need to capture and keep current.
“KBI is the regulator’s structured snapshot of the building — incomplete or stale categories create avoidable compliance risk.”
What the 16 categories cover
Categories span building identity and use, structure, external walls and roofs, staircases, energy systems, evacuation strategy, and fire and smoke control equipment — including ancillary buildings and change-of-use scenarios where the regulations apply.
Each category should have a clear completion status, supporting evidence in the golden thread, and an owner responsible for updates when the building changes.
The 28-day deadline
Following registration, duty-holders have a defined window to submit KBI electronically in the form required by the regulator. Material changes can also trigger amendment duties. Tracking the deadline in the same system as registration and the safety case reduces last-minute gaps.
Keeping KBI current
KBI is not a one-time form. When building information changes materially, Accountable Persons need a controlled process to update categories, evidence, and any related safety case assertions — and to notify the BSR where registration rules require it.
- Named owner for each KBI category
- Evidence linked to golden thread documents
- Deadline and amendment reminders for the AP team
- Alignment with safety case and resident information
Practical tools for multi-HRB portfolios
Housing associations and portfolio APs benefit from building-scoped KBI tracking across multiple HRBs, with completion indicators and export packages ready for the BSR portal. Threadsovereign implements all 16 SI 2023/396 categories with deadline tracking on every paid plan.
Conclusion
Complete, current KBI is foundational occupied-phase compliance. Pair it with a living safety case and occurrence reporting so the regulator sees a coherent picture of the building. See threadsovereign.co.uk/faq for KBI and safety case questions, or start a trial at threadsovereign.io/onboarding.
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Cochise Derrick
Founder & Director
Cochise Derrick is the founder and director of Threadsovereign Ltd and the sole architect and developer of the Threadsovereign platform. With a background as a lead developer on central government digital services and current SC clearance, he brings the technical depth and regulatory understanding required to build compliance infrastructure that duty-holders can genuinely rely on. Threadsovereign is the result of over a year of focused development against the Building Safety Act 2022 and its statutory instruments.
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Product pages and FAQ for duty-holders implementing these workflows.