Historic fabric and life safety, UK wide
Heritage and Listed Buildings Fire Safety
A listed building carries the same fire safety duties as any other premises and almost none of the freedom to alter its fabric in order to meet them. AL23 Safety provides fire risk assessment, fire strategy and fire engineering support to owners, trusts, conservation architects and managing agents responsible for historic buildings across the UK.
Why it matters in heritage buildings
The risks are real and so are the duties
There is no heritage exemption from fire safety law. The Regulatory Reform (Fire Safety) Order 2005 applies to a Grade I country house in exactly the way it applies to a retail park. Listed buildings and buildings in conservation areas are not exempt from the Building Regulations 2010 either. Regulation 9 and Schedule 2 exempt a narrow set of classes including buildings controlled under ancient monuments legislation. That exemption is far narrower than most owners assume and it gives no general protection to historic buildings.
What designation changes is the means by which you comply, not whether you comply. Approved Document B recognises this directly, saying that where Part B applies to existing buildings, particularly buildings of special architectural or historic interest for which the guidance might prove too restrictive, some variation of the provisions may be appropriate. Historic England makes the same point and directs owners towards fire safety engineering where retrofit provisions are impractical, referencing BS 7974. The route to compliance in a historic building is therefore a reasoned, evidenced fire engineered case. It is never a claim of exemption.
The main risks
Where the harm comes from
Hot work during repair
Roof re-leading, plumbing and welding put naked flame next to dry timber voids that have never been fire stopped and repair projects are where catastrophic heritage losses concentrate.
Concealed voids and unprotected roof space
Historic construction runs continuous voids across many rooms, which lets a small fire reach the roof space unseen and unfought.
Legacy electrical installations
Old circuits carrying modern loads, unmanaged extension leads and lighting fitted into combustible fabric remain a leading ignition source in occupied historic buildings.
Open significance
Great halls, open staircases and enfilade rooms are the reason the building is listed. They are also the route smoke will take.
Detection gaps in decorated spaces
Conventional point detection is often refused on visual grounds, which leaves the highest value rooms with the slowest warning in the building.
Irreplaceable contents
Collections, fixtures and historic interiors cannot be rebuilt. Recovery depends entirely on salvage arrangements agreed before the incident.
The regulations that apply
Your legal framework, in plain terms
Fire safety sits with the Regulatory Reform (Fire Safety) Order 2005, which places duties on the responsible person for every non-domestic premises, including visitor attractions, offices and function rooms inside historic estates. Since section 156 of the Building Safety Act 2022 commenced on 1 October 2023 the fire risk assessment must be recorded in full whatever the size of the building, together with the fire safety arrangements and the identity of anyone engaged to carry out the assessment. Heritage bodies feel this more than most, since a two page volunteer assessment is no longer sufficient. Alongside that sit two consent regimes. The Planning (Listed Buildings and Conservation Areas) Act 1990 requires listed building consent for works affecting the character of the building as one of special architectural or historic interest, including internal works and listing covers the whole building, fixtures and pre-1948 curtilage structures. Unauthorised works are a criminal offence and there is no need to prove intent. The Ancient Monuments and Archaeological Areas Act 1979 requires scheduled monument consent for any works to a scheduled monument, granted by the Secretary of State on the advice of Historic England rather than by the local planning authority, with limited class consents for routine activity. There is no ecclesiastical exemption from scheduled monument consent.
Fire Safety Order article 9
A suitable and sufficient fire risk assessment, recorded in full and reviewed when the building or its use changes.
Fire Safety Order article 17
All fire safety measures maintained in an efficient state, in efficient working order and in good repair.
Listed building consent
Required before intumescent door upgrades, new closers, detection cable routes, signage, sprinkler pipework and new escape stairs proceed.
Scheduled monument consent
Required for any works to a scheduled monument, obtained separately and from a different decision maker.
BS 7913:2013
The guide to the conservation of historic buildings, which sets the significance-first framework a consent application is judged against.
Fire safety in heritage and listed buildings
Compliance by engineering when you cannot alter the fabric
Prescriptive guidance assumes you can install fire resisting construction, self-closing FD30S doorsets, protected stair enclosures and cavity barriers. In a Grade I or II* interior you frequently cannot because the panelled door, the open staircase and the decorated plaster ceiling are the significance. Our approach starts with understanding that significance, working from the conservation management plan and the framework in BS 7913:2013, before any fire strategy option is put on paper. We then build the case through a qualitative or quantitative fire engineering route under BS 9999 or BS 7974 rather than defaulting to a prescriptive solution the conservation officer will refuse.
In practice that means preferring management and detection over construction. Very early warning detection using aspirating or beam systems concealed in existing service routes buys the time that missing compartment walls would have bought. Occupancy limits, staff-led evacuation and restriction of high risk activity carry part of the load. Where suppression is proposed, water mist and low flow sprinkler systems reduce both the pipework intervention and the water damage compared with conventional systems, which is often what turns a conservation officer from objector into supporter. Historic doors are upgraded in situ against a tested specification and recorded, rather than replaced and our fire door surveys record the basis of each assessment so the file survives scrutiny years later. Compartmentation you genuinely cannot build is compensated for by attacking the ignition risk instead, through cavity and void survey, rewiring, lightning protection and a hot work regime backed by permit to work systems.
Two points are worth stating plainly. First, listed building consent and Building Regulations approval are independent regimes. Obtaining one does not obtain the other and neither overrides the other so the design has to satisfy both in parallel. Second, life safety takes priority over fabric. The Fire Safety Order is concerned with relevant persons, not with the building. Heritage asset protection is a separate objective delivered by measures beyond the statutory minimum, including property protection suppression, salvage planning and compartmentation of the highest value spaces. The useful part is that the two objectives usually converge, since early detection and automatic suppression protect people and fabric at the same time and reduce the intrusive passive work that would otherwise be unavoidable.
Salvage planning is not a legal duty. It is the difference between losing a collection and saving it. A salvage plan lists the priority items in order, with locations, weights, handling instructions, removal routes, holding areas, equipment and the people authorised to enter. It is agreed with the fire and rescue service in advance because firefighters will not improvise a salvage operation during an incident. London Fire Brigade ran a heritage rescue and salvage exercise at the Royal Academy of Music in August 2025, which is exactly the pre-incident familiarisation the plan is meant to enable. Historic England publishes emergency response plan templates and runs emergency planning training, including at its Portsmouth training centre.
Where we will not bluff. BS 7913:2013 remains the current edition and a revision is in development at BSI project level with no published date so we cite the 2013 edition and flag the revision rather than pretending to know what it will say. We also do not quote Historic England fire publication titles or reference numbers from memory, since the published list changes. We check the current advice pages at the point of writing your strategy and reference what is actually there. Article 9A of the Fire Safety Order, inserted by section 156(4) of the Building Safety Act 2022 to deal with the competence of anyone appointed to assist with a fire risk assessment, has not been commenced. Competence is still a practical expectation rather than a commenced statutory test.
How we help
Built around your operation
Heritage work runs on consent timescales, not on our timescales. We shape the programme so the fire strategy, the conservation case and the consent application move together rather than in sequence.
- Recorded fire risk assessment for historic buildings in visitor, residential, office or mixed use, meeting section 156 in full.
- Fire strategy for historic buildings written for a listed building consent or scheduled monument consent application, with the significance argument set out alongside the fire engineering.
- Fire engineered alternatives to prescriptive compartmentation, using BS 9999 or BS 7974 analysis where Approved Document B provisions would harm the asset.
- Detection option appraisal, covering aspirating, beam and concealed point detection with the visual impact assessed room by room.
- Suppression option appraisal, comparing water mist and low flow sprinkler routes against fabric intervention and water damage.
- In situ historic door upgrade specification and recorded assessment, rather than replacement.
- Salvage plan development, priority tiering and pre-incident liaison with the fire and rescue service.
- Hot work control regimes for repair and conservation projects, including permit systems and post-work fire watch.
- Cavity, void and lightning protection review, targeting the ignition risks that actually cause heritage losses.
Why AL23 Safety
Sector-aware support that gets used
Accountable
Where a proposed intervention will not be consented and will not work, we say so at the option stage rather than after the application fails.
One team, three disciplines
Health and safety, fire safety and fire engineering in-house, which matters when the answer to a heritage constraint is an engineered case rather than another item on an action list.
Practical, not just compliant
Strategies written so a conservation officer, a building control body and a volunteer duty manager can all follow the same document.
Nationwide
We support owners, trusts and estates responsible for historic buildings across the UK from our Manchester base.
Get in touch
Bring us in before the consent application, not after the refusal
Tell us what the building is, how it is used and what you are trying to change. We will tell you honestly whether the fire safety outcome can be reached without harming the asset.
Common questions
Answers, up front
Cannot see your question? Get in touch and we will answer it directly.
Contact usNo. The Fire Safety Order 2005 applies in full and listed buildings are not exempt from the Building Regulations. What changes is the means of compliance. Approved Document B accepts that some variation of its provisions may be appropriate for buildings of special architectural or historic interest, which opens the door to a fire engineered solution rather than an exemption.
Usually yes, wherever the work affects the character of the building as one of special architectural or historic interest. That includes internal work, since listing covers the interior, fixtures and pre-1948 curtilage structures. Intumescent door upgrades, closers, detector heads, cable routes, signage and sprinkler pipework all commonly need consent. Doing the work without it is a criminal offence and intent does not have to be proved.
Frequently realistic and often the measure that unlocks the rest of the strategy. Water mist and low flow systems need less pipework and cause less water damage than conventional sprinklers, which is the argument conservation officers respond to. The pipe routing is itself a consent matter so it is designed with the conservation architect rather than handed over afterwards.
The drivers are the size and grade of the building, how much of the interior is protected, whether a scheduled monument is involved and whether an engineered case is needed or a straightforward recorded assessment will do. A single recorded fire risk assessment on an occupied listed office is a short piece of work. A fire strategy supporting a consent application on a Grade I property runs over several weeks and moves at the pace of the conservation dialogue. Pay as you go is £95 per hour or £695 per day plus VAT. Call us and we will scope it against the actual building.
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