A 3 bedroom house is a common family home in Scotland, and its layout—whether single-storey, two-storey, or with an attic conversion—directly impacts your smoke alarm requirements. Scotland’s 2022 fire safety regulations don’t offer a one-size-fits-all answer, but they do provide clear guidelines based on room function, circulation spaces, and storeys. The goal is to ensure no area of your home is left unprotected, with interlinked alarms that alert you instantly, wherever danger strikes. Let’s tailor these rules to a typical 3 bedroom house and clarify exactly how many alarms you need, plus where to place them.
First: Start with the Fundamentals
Before counting alarms, remember the two non-negotiable rules for all Scottish homes: all smoke and heat alarms must be interlinked, and kitchens require heat alarms (not smoke alarms). For a 3 bedroom house, the number of alarms depends primarily on how many storeys you have and the layout of circulation spaces (hallways, landings) on each level. We’ll cover the most common scenarios below.
Scenario 1: Two-Storey 3 Bedroom House (Most Common)
A typical two-storey home has ground-floor living spaces and three bedrooms upstairs. Here’s the breakdown:
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Ground Floor: 1 smoke alarm in the living room (or main daytime living space, e.g., a family room).
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1 heat alarm in the kitchen (mandatory, as smoke alarms here cause false triggers).
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1 smoke alarm in the ground-floor hallway (if separate from the living space; if it’s an open-plan ground floor combining hall and living room, one well-placed smoke alarm suffices—no more than 7.5 metres from any point in the space).
First Floor: 1 smoke alarm in the upstairs landing (the main circulation space for the three bedrooms—one alarm covers all bedrooms accessing this landing).
Total for Two-Storey Home: 3 smoke alarms + 1 heat alarm = 4 devices (all interlinked).
Scenario 2: Single-Storey 3 Bedroom House
For a bungalow-style 3 bedroom home with all rooms on one level, the focus is on separating living spaces from bedrooms and covering circulation areas:
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1 smoke alarm in the living room/family room.
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1 heat alarm in the kitchen.
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1 smoke alarm in the main hallway (the space connecting the bedrooms, living area, and kitchen).
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Total for Single-Storey Home: 2 smoke alarms + 1 heat alarm = 3 devices (all interlinked).
Scenario 3: Two-Storey Home with an Attic Conversion (Third Storey)
If one of your three bedrooms is in an attic conversion (making it a three-storey home), you’ll need an additional smoke alarm for the attic landing:
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Ground Floor: 1 smoke alarm (living room) + 1 heat alarm (kitchen) + 1 smoke alarm (ground hallway).
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First Floor: 1 smoke alarm (first-floor landing).
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Attic (Third Storey): 1 smoke alarm (attic landing, outside the bedroom).
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Total for Three-Storey Home: 4 smoke alarms + 1 heat alarm = 5 devices (all interlinked).
Key Exceptions and Add-Ons
Don’t forget these critical details for your 3 bedroom home:
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Carbon Monoxide Detectors: If you have a boiler, wood burner, or open fire (common in living rooms or bedrooms), add a CO detector in that room. No need to interlink it with smoke/heat alarms.
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Open-Plan Spaces: If your ground floor is fully open (e.g., kitchen, living room, and hallway flow together), use one heat alarm (for the kitchen area) and one smoke alarm (for the living area)—no need for multiple alarms here, as long as each is within 7.5 metres of all points in the space.
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Specialist Alarms: If someone in your home is deaf or uses a telecare system, install specialist alarms alongside the standard ones—don’t remove existing telecare devices.
Simplify Compliance with Wisualarm’s 3 Bedroom Home Solution
Calculating alarms is only half the battle—you need a system that’s easy to install, low-maintenance, and 100% compliant with Scottish rules. Wisualarm’s interlinked smoke and heat alarms, are perfect for 3 bedroom homes, whether two-storey or converted. Our smoke alarms meet BS EN 14604:2005, and our heat alarms adhere to BS 5446-2:2003—so you check every regulatory box. With 10-year sealed batteries, you’ll never worry about replacing batteries or silencing low-battery alerts. Best of all, our radio-frequency interlinking works seamlessly across storeys, no WiFi needed—trigger one alarm, and all 4 (or 5) devices activate instantly. For landlords, this means hassle-free maintenance; for families, it means round-the-clock protection. Upgrade your 3 bedroom home’s fire safety with Wisualarm—where compliance meets convenience.


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