Working from your spare room does not keep you outside fire safety law the moment a client visits, an employee works there with you, or deliveries and stock start filling the hallway. At that point the room stops being purely domestic and the Regulatory Reform (Fire Safety) Order 2005 (RRO 2005) applies to it as a workplace, with you as the responsible person. Get caught out and the consequences are the same as for any other premises: an improvement notice, a prohibition notice, or, in the worst cases, prosecution after a fire that could have been prevented.
Most home-based business owners never think about this because there is no office building, no landlord, and no obvious "premises" to assess. That is exactly why so many get it wrong. The law does not care that your workplace is also your living room.
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Where domestic space ends and business space begins
The RRO 2005 is built around a distinction between domestic premises, which it generally does not cover, and premises used for trade or business, which it does. A spare room used only by you, with nobody else setting foot in it, sits closest to the domestic end of that line. The moment an employee, a contractor, a client, or a delivery driver regularly comes into that space, the business-use part of your home comes back into scope as a workplace.
This is not about the size of the business or how much money it makes. A single self-employed hairdresser doing colours in a converted garage, or a bookkeeper who has one part-time assistant working from the dining table two days a week, both have a responsible person's duties attached to the part of the home being used for the business, as our guide to the responsible person under UK fire safety law sets out in more detail.
If you only ever work alone, with no visitors and no one else employed, you sit in a genuinely lower-risk category, and a full formal assessment may be unnecessary. But the moment that changes, even for one afternoon a week, treat it as changed from that point, not from whenever you get round to reviewing it.
What actually needs assessing in a home office or workspace
Start with what is actually in the room. A desk-based home office with a laptop and a printer carries a different risk profile to a garage workshop running power tools, a kitchen-based catering business, or a garden studio used for crafts involving heat, chemicals or flammable materials. The assessment should reflect what you genuinely do in the space, not a generic office template.
Look specifically at electrical load. Home offices accumulate extension leads, multi-plug adaptors, and chargers over time, often without anyone checking whether the circuit was designed to take it. If anyone other than you works in the space, consider a periodic electrical inspection in the same way a commercial landlord would under the written fire risk assessment duty introduced by the Building Safety Act 2022, which removed the old exemption for smaller premises and made a written record the standard for every responsible person.
Check escape routes exactly as you would in any other workplace. Is there a clear way out of the room that does not depend on passing through a part of the house that might already be affected by fire? Could a wheelchair user, a visibly pregnant employee, or someone unfamiliar with the layout get out quickly if the usual route were blocked?
Fire detection and equipment
A domestic smoke alarm fitted under building regulations for the house as a whole is a reasonable starting point, but check it actually covers the room being used for business, and that anyone working there would hear it from behind a closed door, especially if that room is a converted outbuilding or garage some distance from the main house.
Consider whether the nature of the business justifies a fire extinguisher or fire blanket in the workspace itself, following the same logic set out in our guide to fire extinguisher requirements for UK businesses. A hairdressing studio using heated styling tools, a candle-making business, or a workshop with power tools all carry risks a desk-based consultancy does not, and the equipment provided should match that.
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Common home-business scenarios worth checking now
Childminders and home-based nursery providers already answer to Ofsted on premises safety, but that does not remove the separate RRO duty covering the business-use parts of the home, particularly escape routes suitable for young children who cannot self-evacuate quickly. Treat the two sets of requirements as additional to each other, not interchangeable.
Online sellers who store stock at home, whether that is clothing, electronics or anything flammable in bulk, often underestimate how much fire load a spare bedroom full of boxed inventory adds compared with the same room used for paperwork. If stock is piling up against escape routes or stacked near a boiler or electrical consumer unit, that is a fire risk assessment finding, not just a storage inconvenience.
Beauty therapists, hairdressers and anyone using heated equipment, wax heaters or nail treatment products at home should assess those specific ignition sources separately from the general room risk, in the same way a salon on a high street would.
England, Wales and Scotland
The RRO 2005 applies in England and Wales. In Scotland, the equivalent duties sit under the Fire (Scotland) Act 2005 and its associated regulations, enforced by the Scottish Fire and Rescue Service rather than your local fire authority. The underlying principle is the same wherever you are: a responsible person must assess and manage the fire risk created by business use, but check the Scottish framework specifically if your home-based business operates north of the border, rather than assuming the English rules transfer across unchanged.
Employees change everything
The single biggest trigger for stricter duties is employing someone, even part-time, even just one person. Once you have an employee working in part of your home, you owe them the same basic fire safety duties any employer owes any employee: a documented fire risk assessment for the space they work in, a means of escape they know how to use, and fire detection that would alert them even if you are not in the room.
This also affects your home insurance. Many standard household policies exclude or limit cover where the property is used for business purposes, and that exclusion can bite hardest exactly when something goes wrong, such as after a fire linked to business equipment or an employee working on the premises. Tell your insurer what the space is used for and how, in writing, before you need to rely on the policy.
Keeping it proportionate
None of this means a home-based consultant needs the same paperwork as a 50-person office. The RRO 2005 has always required a proportionate response to actual risk, not a fixed template applied regardless of circumstances, as our guide to fire risk assessment obligations for small businesses under the RRO 2005 explains. A low-risk, desk-based home office with no visitors might need little more than a short written note confirming the room has a working alarm and a clear exit.
What changes the calculation is risk, not sentiment about working from home feeling informal. Heat sources, flammable stock, visitors, or employees all raise the bar, and the assessment should rise to meet whatever is actually happening in that room, reviewed again whenever the business changes shape.
Next steps
If anyone other than you works, visits or receives services in part of your home, treat that space as a workplace under the RRO 2005 from today, not from your next slow afternoon. Write down what you have checked, even briefly, so you have something to show if your insurer or an inspector ever asks. FRASafe's small business fire risk assessment walks you through every area the RRO 2005 requires, completed online in 30 to 45 minutes for £45, scaled to a home-based setup rather than a full commercial site. Start your small business fire risk assessment and get it on paper properly.