Home/Advice/Fire Alarm Installation in Shoreham By Sea: A Practical Guide
Advice · West Sussex & West Sussex
Whether you own a terraced house near the river, let a flat above a shop or run a small business on the high street, the right fire alarm depends on the building and how it is used. This guide covers what the standards ask for, what landlords and business owners have to do by law, and roughly what installation in and around Shoreham By Sea involves.
Domestic fire alarms are designed to British Standard BS 5839-6, which sets a grade (how the alarms are powered and connected) and a category (how much of the property is covered). For most houses the sensible minimum is Grade D1 or D2: mains powered alarms with a built-in battery backup, all interlinked, so a fire in the kitchen sets off the alarm on the landing where you are asleep.
Coverage is graded LD3 (escape routes only), LD2 (escape routes plus higher risk rooms such as the kitchen and living room) or LD1 (almost every room). We usually recommend LD2 as a fair balance for family homes. Kitchens should have a heat alarm, not a smoke alarm, because cooking fumes cause false alarms and people end up taking the batteries out.
If you let a home, you must fit at least one smoke alarm on every storey used as living accommodation, and a carbon monoxide alarm in any room with a fixed combustion appliance (gas cookers are excluded). You must check they work on the day a new tenancy starts and repair or replace them promptly once told they are faulty.
HMOs need more. The usual reference is the LACORS fire safety guidance, which links the system to the size and layout of the property. A small two storey shared house may be fine with a Grade D interlinked system and extra coverage, while a larger HMO of three or more storeys, or one converted into bedsits, will often need a Grade A system with a control panel, manual call points and a fire log book. Shoreham sits within Adur District, so HMO licensing and inspections go through Adur and Worthing Councils, and it is worth checking their licence conditions before any work starts.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person for a business premises must carry out a fire risk assessment, and that assessment decides what kind of detection is needed. Commercial systems are designed to BS 5839-1, which uses categories such as L (protecting life) and M (manual call points only).
A small shop or office might need only a modest panel system with call points and sounders, while premises with sleeping accommodation or a flat above usually need automatic detection that also protects the residential part. We design the system around your risk assessment, install it, and issue a certificate covering design, installation and commissioning.
For an occupied home, fitting mains powered alarms usually takes a day, sometimes less. Where cables are hard to run, for example in older properties with solid walls or limited loft access, radio interlinked alarms on a mains supply avoid lifting floorboards while still meeting Grade D requirements.
Costs depend on the size of the building, the grade and category needed and how easy cable routes are. As a rough guide, an interlinked Grade D system for a typical two or three bedroom house often falls between £350 and £900. A Grade A panel system for an HMO or small commercial unit is a larger job, commonly from around £1,500 upwards, rising with the number of zones and devices. We will give you a written quote within 24 hours of looking at the property, and you get photographs of the finished work along with the certificate.
In a home, press the test button on each alarm monthly and vacuum the vents now and then. Coastal dust and the odd spider are common causes of false alarms. Panel systems in HMOs and commercial premises should be serviced by a competent person at least every six months under BS 5839-1, with the results recorded in the log book. We offer annual and six monthly servicing with zone testing across Shoreham, Lancing, Hove and Goring, and the same engineer comes back for any follow up.
Published 10 November 2026
Battery alarms are better than nothing and are acceptable in some rented homes, but for most houses we recommend mains powered, interlinked alarms because they cannot be disabled by a flat battery and everyone hears them. Extensions, loft conversions and new builds generally need mains powered alarms under Building Regulations.
It depends on the size, number of storeys and layout. Smaller shared houses can often use an interlinked Grade D system, while larger or bedsit style HMOs usually need a Grade A panel system, so check your licence conditions with Adur and Worthing Councils.
BS 5839-1 recommends servicing by a competent person at intervals of no more than six months. You or a nominated person should also test a call point weekly and log the result.
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