Law versus guidance: what you must do, and what is only recommended
Ask most people responsible for a building where their fire safety duties come from, and you get one word: "the regulations." In practice, what governs a building is a layered mix of law you must follow and guidance you should consider. The two are not the same, and treating them as one is one of the most expensive mistakes in building management. It leads people to gold-plate things that are optional and skip things that are not.
What counts as law
Law is the part you do not get to negotiate. The Regulatory Reform (Fire Safety) Order 2005 is the backbone. It requires the Responsible Person for a building to carry out a fire risk assessment of the common parts and to manage the risks it finds. The Fire Safety (England) Regulations 2022, in force since January 2023, sit underneath it and set specific tasks, such as quarterly fire door checks in the common parts of buildings over 11 metres and giving residents fire safety information. For higher-risk buildings, the Building Safety Act 2022 adds a further layer of legal duties. If a duty lives in one of these, it is not advisory. You do it, and you can be held to account for not doing it.
What counts as guidance
Guidance tells you how to meet the law well. British Standards are the clearest example. BS 9991 for residential fire safety design, BS 5839 for fire alarm systems, BS 8214 for fire door installation. Approved Document B, which supports the Building Regulations, is guidance too. These documents are detailed, authoritative and widely followed, but they are not, in themselves, the law. You are generally free to meet a legal duty by another route, provided you can show the route is at least as safe.
Why the difference matters
The distinction is not academic. It decides where your discretion lies. If something is a legal duty, there is no judgement call. It happens, on time, recorded. If something is guidance, you have room to apply it proportionately to your building, as long as your reasoning is sound and evidenced.
Confusing the two goes wrong in both directions. Some buildings spend heavily meeting a British Standard to the letter in a situation where a proportionate approach would have been perfectly defensible, because someone believed the standard was compulsory. Others skip a genuine legal duty because it felt like optional best practice. The first wastes money. The second creates real exposure.
The trap of "the assessor said so"
Here is where it gets practical. When a fire risk assessment recommends an action, that recommendation is usually rooted in guidance, not always in a specific legal duty. That does not make it safe to ignore. A recommendation you dismiss without a good reason becomes evidence that you knew about a risk and chose not to act, which is a worse position than not having asked. But it does mean you are allowed to ask the sensible questions. Is this driven by law or by best practice? What is the actual risk being addressed? Is there a proportionate way to meet it? Those are legitimate questions, and a good adviser will welcome them.
How to approach it calmly
You do not need to become a lawyer. You need to be able to sort your obligations into two piles. The must-do pile is your non-negotiables, and it should be run on a schedule with evidence behind every item. The should-consider pile is where judgement lives, and every decision in it should have a reason you would be comfortable explaining later. The skill is not in knowing every clause. It is in knowing which pile a given item belongs in, and being honest about it.
This is exactly the kind of read an independent adviser is useful for, because we have no works to sell on the back of the answer. We can tell you plainly that something is a hard duty, or that something is guidance you can meet proportionately, without the advice being shaped by what the follow-on job is worth.
If you would find it useful to sort your building's duties from its options, with no agenda behind the answer, I am happy to talk it through. s.coogan@omnifire.co.uk