In short
- The golden thread is the information about a higher-risk building needed to understand and manage its fire and structural safety.
- It must be held electronically and be accurate, up to date, secure and accessible.
- It starts at design and construction and is handed over at completion to the accountable person.
- Relevant information must be shared with the regulator, other accountable persons, residents and the fire service.
What the golden thread is
The golden thread was one of the central recommendations of Dame Judith Hackitt's review after Grenfell. It's the information about a higher-risk building that allows people to understand the building and keep it safe, now and in the future. Under the Building Safety Act 2022, it applies through design, construction and occupation.
For occupied buildings, the detailed requirements are in the Higher-Risk Buildings (Keeping and Provision of Information etc.) (England) Regulations 2024. They sit alongside the regulations on registration, key building information and management of building safety risks.
Who's responsible
In an occupied higher-risk building, the principal accountable person (PAP) and any other accountable persons must keep and share the golden thread for the parts of the building they're responsible for. Not sure who that is? See responsible person vs accountable person.
What information it holds
The regulations list the information to keep. In broad terms, it covers:
- Assessments of building safety risks – fire spread and structural failure – and the measures in place to manage them
- The evacuation strategy, including precautions for residents (such as the safe storage and charging of e-bikes and scooters) and arrangements for residents who can't use the stairs
- Structural safety information, relevant reports, the design codes used at construction, and building plans
- Maintenance and repair records for systems such as lifts, fire alarms and smoke control
- Building work – approvals before work starts, and updates once it's done
Information created during design and construction – the fire strategy, the fire and emergency file, as-built drawings, product information – is handed over at completion. See Regulation 38 and the fire and emergency file.
The standards it must meet
The golden thread must be:
- Held electronically
- Accurate and up to date
- Secure, with access controlled
- Readily available to those who need it
- Exchangeable, so it can be passed on when ownership, managing agents or service providers change
Who must be given information
The PAP must provide relevant information to the Building Safety Regulator, other accountable persons, residents and the fire and rescue service in the circumstances the regulations set out. The key building information must be submitted within 28 days of registration.
How to set it up sensibly
- Start with a document register. List what you hold, its date, author and status.
- Fill the gaps that matter most. A missing fire strategy or FRAEW matters more than a missing product brochure.
- Use consistent naming and version control so everyone uses the latest document.
- Choose a platform you'll actually use – it doesn't need to be complex, but it must be digital, secure and shareable.
- Build updating into processes. Every repair, change or new report should trigger an update.
- Keep it relevant. The golden thread isn't every email ever sent – it's the information needed to manage safety.
How it connects to the safety case
A safety case report is only as good as the evidence behind it, and the golden thread is where that evidence lives. Weak information management is one reason applications fail – see why safety cases get refused.
What the golden thread is not
- Not every email or invoice. It's the information needed to understand and manage the building's safety.
- Not a filing cabinet scanned into a folder. Information must be organised so the right people can find and use it.
- Not a one-off project. It has to be kept up to date for the life of the building.
- Not just for the regulator. Residents, the fire service and future managers rely on it too.
Our Building Safety Act support includes gap analysis and golden thread document coordination, and our safety case reports draw directly on it.
How we can help
We match each project to a qualified specialist and confirm the scope, the named professional and a fixed fee before you commit.
Sources
- legislation.gov.uk – Higher-Risk Buildings (Keeping and Provision of Information etc.) (England) Regulations 2024
- Building Engineer – A detailed guide to HRB regulations for accountable persons
This guide is general information based on the law and guidance in England as at 8 November 2026. It isn't legal advice – for advice on a specific building, get in touch.