Scope: Scotland. Cited to Scottish instruments throughout. This standard sits in the tolerable standard under the Housing (Scotland) Act 1987, as extended by the 2019 Order. It is not the Smoke and Carbon Monoxide Alarm (England) Regulations, which have no application in Scotland.
Our compliance check now covers Scotland, and so does the fine calculator. Enter a Scottish postcode and both answer in Scots law, cited to Scottish instruments — the check with your council’s registration and HMO position where we hold it, the calculator with the Scottish maximum for each offence and, where the consequence is not a fine, what it actually is. Still England and Wales only: the tenancy agreement checker, whose findings come from England and Wales statutes.
What is required
Since February 2022, every home in Scotland must have:
- One smoke alarm in the room most frequently used for general daytime living — in practice the living room.
- One smoke alarm in every circulation space on each storey — hallways and landings.
- One heat alarm in the kitchen.
- All of those alarms interlinked, so that when one sounds they all sound.
- A carbon monoxide detector in any room with a carbon-fuelled appliance — a boiler, fire, heater or flue. The CO detector does not need to be interlinked with the others.
Alarms should be ceiling mounted, and either sealed tamper-proof long-life battery units or mains-wired. Interlinking can be by radio or hard wiring.
Three ways Scotland is different, and the one comparison
1. It applies to every home, not just rented ones
Because the requirement sits in the tolerable standard, it attaches to the house, not the tenancy. Owner-occupiers are within it too. Most alarm guidance a landlord finds online is written for a rented-sector-only regime and does not describe this.
2. Interlinking is mandatory
This is the requirement that costs money and is most often missed. Standalone alarms in the right rooms do not meet the standard. They have to talk to each other.
3. A heat alarm in the kitchen is required
Not a smoke alarm — a heat alarm, because a smoke alarm in a kitchen produces nuisance activations and then gets removed.
The explicit comparison, and the only place an English rule appears in this article: the England regulations require a smoke alarm on each storey and a CO alarm in rooms with a fixed combustion appliance, and do not require interlinking or a kitchen heat alarm. A landlord who equips a Scottish property to the English specification has an under-equipped Scottish property. See the divergence map.
How it is enforced against a landlord
Through the Repairing Standard, and the route is worth understanding because it is indirect:
- Alarms are part of the tolerable standard (Housing (Scotland) Act 1987, section 86).
- Paragraph (h) of the Repairing Standard requires the house to meet the tolerable standard.
- Section 14 of the 2006 Act makes the Repairing Standard a continuing landlord duty.
- A tenant applies to the First-tier Tribunal, which can make a Repairing Standard Enforcement Order and a rent relief order.
So an alarm failure is not a minor technical breach. It is a failure of the standard the whole tenancy is conditioned on.
What to check in an existing property
- Are the alarms interlinked? If you cannot confirm this, assume not.
- Is there a heat alarm in the kitchen, or a smoke alarm someone installed instead?
- Is there an alarm in every circulation space on every storey, including an upper landing?
- Is there a CO detector in each room with a carbon-fuelled appliance — including a room with only a flue?
- Are the units within their service life? Sealed long-life units expire.
Record what is installed, where, and when. Evidence of compliance is what you will need at a Tribunal, and it is much easier to gather before a dispute than during one.
Information tool, not legal advice. Scottish law only.
Common questions
What are the Scottish smoke alarm rules?
Since February 2022 every home in Scotland needs one smoke alarm in the room most used for daytime living, one smoke alarm in every circulation space on each storey, and a heat alarm in the kitchen — all interlinked so that when one sounds they all sound. A carbon monoxide detector is also required in any room with a carbon-fuelled appliance, and that one does not need to be interlinked.
Do Scottish alarms have to be interlinked?
Yes, and it is the requirement most often missed. Standalone alarms in the correct rooms do not meet the standard. Interlinking can be by radio or hard wiring, and alarms should be ceiling mounted and either mains-wired or sealed tamper-proof long-life battery units.
Does the Scottish alarm standard apply to owner-occupiers?
Yes. Because the requirement sits in the tolerable standard under the Housing (Scotland) Act 1987, it attaches to the house rather than to the tenancy, so owner-occupied homes are within it too. Most alarm guidance written for landlords describes a rented-sector-only regime and does not reflect this.
What happens if my Scottish rental does not have interlinked alarms?
It fails the tolerable standard, which means it fails paragraph (h) of the Repairing Standard, which is a continuing landlord duty under section 14 of the Housing (Scotland) Act 2006. A tenant can apply to the First-tier Tribunal, which may make a Repairing Standard Enforcement Order requiring the work and a rent relief order reducing the rent until it is done.