Landlord compliance

Fire Alarm Installation

Mains-powered interlinked fire alarm systems designed and installed to BS 5839.

From £219.99 (inc VAT) Usually completed in a single visit 12-month workmanship guarantee

Book this service 07426 409342

Starting from

£219.99inc VAT

per alarm · supplied, installed, interlinked and certified

Designed from your fire risk assessment, not a generic template

Radio interlinking available — no lifting floors in an occupied property

Correct detector type per room, so tenants do not disable them

Usually completed in a single visit

Book online

Overview

What is a Fire Alarm Installation certificate?

We design and install fire detection systems to BS 5839, from a small interlinked domestic system to a panel-based system in a larger HMO or commercial premises. Pricing is per alarm and includes the device, mains wiring, interlinking, commissioning and certification. The number and type of devices is determined by your fire risk assessment or Fire Safety Check, so the system matches what the building actually needs rather than a guess.

Why it matters

Why it's worth getting right

Detection is the measure that buys people time, and time is the only thing that matters in the first two minutes of a fire. A correctly designed system warns everybody in the building simultaneously, from a detector positioned where a fire will actually reach it, using a technology suited to the room it is in. Systems that are installed to the wrong grade, sited badly or left un-interlinked provide the appearance of protection without the substance, and they fail licensing inspections routinely.

Design, installation and certification

Fire detection in dwellings is designed to BS 5839-6, and in commercial buildings to BS 5839-1. The required grade and category come from your fire risk assessment, and for licensed HMOs from the licence conditions your local authority applies — most London boroughs follow the LACORS housing fire safety guidance. Mains-powered alarm installation is electrical work within scope of Part P of the Building Regulations in England, so it must be carried out by a registered competent person or notified to building control; our NICEIC / NAPIT registration means it is self-certified. On completion you receive a design, installation and commissioning certificate identifying the grade and category achieved.

Regulations & standards

The rules this work is carried out to

Every inspection we do is measured against a published standard — here are the ones that apply to this service.

BS 5839-6

Fire detection and alarm systems for dwellings

Grades A–F and Categories LD1–LD3 for domestic installations.

BS 5839-1

Fire detection and alarm systems for buildings

Panel-based system design for commercial and larger premises.

Part P

Building Regulations — Electrical Safety (England)

Mains alarm installation is notifiable; we self-certify under our scheme.

In detail

Understanding your Fire Alarm Installation

The technical detail behind the certificate — what gets checked, what the results mean, and the decisions that actually affect your property.

Choosing the right grade for the building

The single most consequential design decision is grade. Grade D1 — mains-powered interlinked alarms with sealed tamper-proof backup batteries — is the standard for most rented houses, flats and smaller HMOs, and is what the majority of our installations are. Grade A, a full system with a control panel, separate detectors and sounders, monitored circuits and a standby power supply, is required for larger HMOs, typically those of three or more storeys or above a certain occupancy, and for most commercial premises. Grade F, battery-only alarms, is not acceptable for rented accommodation in almost any circumstance. Installing D1 where the licence requires Grade A is a costly mistake, which is why we work from the fire risk assessment rather than a general assumption.

Where detectors go, and why siting decides performance

BS 5839-6 sets specific siting rules and they exist for physical reasons. Ceiling-mounted detectors should be at least 300 mm from any wall or light fitting, because air movement in that corner zone is poor and smoke arrives late. Detectors should not sit directly above a heat source or in the path of a ventilation supply, which dilutes the smoke reaching them. In rooms with sloped ceilings the detector goes near the apex, where smoke collects. In hallways, a detector goes within a set distance of every bedroom door so it detects before smoke enters a sleeping area. Poor siting is common and consequential: a detector 100 mm from a wall may activate a minute or more later than one correctly placed, and a minute is a very long time in a fire.

Hard-wired versus radio interlinking

Interlinking is mandatory in practically every rented property, and there are two ways to achieve it. Hard-wired interlinking runs a permanent interconnect cable between alarms, and is the natural choice during a refurbishment or rewire when floors are already up. Radio interlinking uses an encrypted radio link between devices, which avoids lifting floors and making good in an occupied property, and is fully compliant with BS 5839-6. In a tenanted property, radio interlinking is very often the right answer: it turns a disruptive multi-day job into a single visit, with no redecoration afterwards. Both approaches are tested identically at commissioning by activating one device and confirming every other responds.

What the per-alarm price includes

At £219.99 per alarm, each device includes the alarm itself, mains connection, interlinking to the rest of the system, siting to BS 5839-6, testing and commissioning, and its share of the certification. Pricing per device rather than per property means the cost scales honestly with what the building actually needs — a studio needing two devices is not subsidising an eight-bedroom HMO needing twelve. Where a property needs a Grade A panel system, the panel and its associated infrastructure are quoted separately after survey, because panel systems vary far too much to price from a table.

Warning signs

When a property needs a new system

Installation rather than repair is usually the right answer when:

Alarms are battery-only, where a mains-powered interlinked system is required

Devices are not interlinked, so one activation does not warn the whole property

Most or all alarms are at or past their ten-year expiry date

A fire risk assessment or licence condition specifies a higher grade or category

The property is being converted to an HMO or the storey count is increasing

Coverage is incomplete — a storey, hallway or risk room with no detection

A refurbishment or loft conversion has changed the escape route

Existing devices are the wrong type for their room, particularly in kitchens

The risks

The risk of an inadequate system

A system that looks installed but is not correctly designed offers false reassurance:

!Occupants unwarned until smoke reaches them personally, losing critical minutes

!HMO licence refused or conditioned where the grade does not meet requirements

!Civil penalties of up to £5,000 under the smoke and CO alarm regulations

!Prosecution under the RRO 2005 in buildings with communal areas

!Insurance claims declined where the system did not meet the required standard

!Wasted expenditure when a non-compliant system has to be replaced entirely

!Nuisance activations from wrongly sited detectors, leading tenants to disable them

After installation

A new system still needs a routine. Ask tenants to test alarms monthly with the test button and to report any chirping rather than removing a device. Have the system formally inspected annually — our Fire Safety Check covers this and produces the certificate for licensing. Keep the design, installation and commissioning certificate safe, as it is what evidences the grade and category you achieved, and it will be requested at licence renewal. Plan replacement at ten years for the whole system rather than device by device, so the installation shares a single expiry cycle. Record the tenancy-start alarm test in writing at every change of tenant.

Why us

The benefits of booking your Fire Alarm Installation with us

Accredited, transparent and built around making compliance easy.

Designed from your fire risk assessment, not a generic template

Radio interlinking available — no lifting floors in an occupied property

Correct detector type per room, so tenants do not disable them

Usually completed in a single visit

Design, installation and commissioning certificate on completion

Part P notification handled for you

What's included

Everything covered in your Fire Alarm Installation

One all-inclusive price — here is exactly what the engineer does on site and what you receive afterwards.

System design to BS 5839-6 or BS 5839-1 to the required grade and category

Supply and installation of each alarm, mains-connected

Hard-wired or radio interlinking across the whole system

Siting to BS 5839 clearance and coverage requirements

Correct detector type selected for each room — heat alarms in kitchens

Full commissioning with interlink verification

Design, installation and commissioning certificate identifying grade and category

Part P notification handled under our competent person scheme

Pricing

Simple, all-inclusive pricing

The price you see is the price you pay — VAT included, with no hidden call-out fees. Your final price depends on the size of your property; we'll confirm an exact, all-inclusive quote before we attend.

Fire Alarm Installation from

£219.99inc VAT

per alarm · supplied, installed, interlinked and certified

Get my exact price

All prices include VAT · 12-month workmanship guarantee

Fire alarm installation pricing

Installation	Price (inc VAT)
Per alarm — supplied, installed, interlinked and certified	£219.99
Grade A panel system	Quoted after survey

The number and type of devices is determined by your Fire Safety Check or fire risk assessment, so the system matches what the building genuinely requires. Panel-based Grade A systems are quoted individually after survey.

Prices are all-inclusive of VAT with no hidden call-out fees. Where they genuinely apply, parking (£5) and the London Congestion Charge (£18) are passed on at cost and always shown up front.

The process

How your appointment works

Simple, transparent and designed around you and your tenants.

Step 1

Determine grade and category

We work from your fire risk assessment or Fire Safety Check to establish exactly what grade and coverage the building requires.

Step 2

Design the layout

Device positions are set to BS 5839 siting rules, with the right detector technology chosen for each room.

Step 3

Install and interlink

Each alarm is mains-connected and interlinked — hard-wired or radio, whichever suits an occupied property best.

Step 4

Commission and certify

Interlinking is proved device by device, and your design, installation and commissioning certificate is issued on completion.

FAQs

Fire Alarm Installation — frequently asked questions

It depends on the storey count, layout and use. As a minimum, one on every storey plus a heat alarm in the kitchen, but HMOs and properties with communal areas usually need more. Your fire risk assessment or our Fire Safety Check determines the exact number, which is why we inspect before quoting.

Grade D1 is mains-powered interlinked alarms with sealed backup batteries — the standard for most rented houses and smaller HMOs. Grade A is a full system with a control panel, separate detectors and sounders and a standby supply, required for larger HMOs and most commercial premises. Your licence conditions determine which applies.

Not usually. Radio interlinking uses an encrypted radio link between devices and is fully compliant with BS 5839-6, which means no cable runs, no lifting floors and no making good. In an occupied property it turns a multi-day job into a single visit.

No. Mains-connected alarm installation is electrical work notifiable under Part P of the Building Regulations and must be carried out by a registered competent person or notified to building control. Battery-only alarms you can fit yourself, but they are not acceptable for most rented accommodation.

Because per-device pricing scales honestly with what the building actually needs. A studio requiring two devices should not be subsidising an eight-bedroom HMO requiring twelve. You pay for the coverage your property genuinely requires and nothing more.

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Book your Fire Alarm Installation today

Fill in the form and we'll confirm your appointment and an all-inclusive price, usually within the hour. Prefer to talk? Call us and we'll book you in within two minutes.

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07426 409342

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