Wireless alarms
Ajax wireless systems for finished, lived-in homes. No chasing, no redecorating, app control and instant alerts.
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Chelsea · Notting Hill · South Kensington · SW & W
Burglar alarm installation in Kensington & Chelsea
Stucco terraces in South Kensington, mews houses behind Notting Hill, mansion flats in Earl's Court and townhouses with deep basements in Chelsea all need alarms that respect the building. We design each system around its floors, mews doors and lightwells, survey in person, price it in writing, then fit it and set it up on your phone.
- Installing since 2012
- 3,000+ installations
- 12-month guarantee on the installation
- Covering all of Kensington & Chelsea
Alarms we install in Kensington & Chelsea
Burglar and intruder alarms, designed for your property
New systems, upgrades of old panels, takeovers of alarms other companies fitted, and servicing — for houses, flats, shops and offices. Every system is designed from a survey of the property, never from a fixed kit.
Wired & hybrid alarms
Texecom and Pyronix wired systems for renovations and new builds, cabled at first fix and installed at second fix.
Texecom alarms →Upgrades & takeovers
Old panel, lost engineer code, or an alarm the last owner left behind? We keep sound wiring and sensors and replace the panel.
Alarm upgrades →Servicing & repairs
Beeping keypads, false alarms, flat batteries and faulty detectors on Texecom, Pyronix, Visonic, Risco and other makes.
Alarm servicing →Designed for the property in front of us
Alarm design for Kensington & Chelsea properties
Kensington and Chelsea is dominated by tall period houses, many of them now split into apartments, alongside cobbled mews, red-brick mansion blocks and post-war estates in the north of the borough. Basement extensions, roof terraces and mews garages create extra entry points. Detector placement has to account for five or six storeys, shared common parts and fine interiors that cannot be chased for cables.
Townhouses in Chelsea, South Kensington and Holland Park
Tall stucco and brick townhouses often have a basement with a front lightwell, a raised ground floor and a garden or terrace at the rear. Protection concentrates on the lower floors and any roof access, with the upper bedrooms left unarmed at night. Wireless devices avoid disturbing cornicing, panelling and hand-painted finishes.
- Basement, lightwell and garden doors all fitted with contacts
- Roof terrace and skylight access covered on top floors
- Night setting that protects lower floors while you sleep
Mews houses behind Notting Hill, Kensington and Chelsea squares
Converted stables and coach houses usually have a garage or large ground-floor door straight onto the mews, small windows and living space on the first floor. The garage door gets a contact suited to its size, the ground floor gets motion cover, and first-floor windows overlooking flat roofs are protected too.
- Garage and up-and-over doors fitted with heavy-duty contacts
- First-floor windows over low roofs brought into the design
- App alerts when the mews door is opened while armed
Mansion blocks and lateral flats in Earl's Court and Kensington
Flats in red-brick mansion blocks and converted houses share an entrance and often a porter or managing agent. A compact wireless system covers your front door, reception rooms and any service door to a back stair. Nothing goes on the facade or in the common parts without the freeholder's written agreement.
Refurbishments and basement extensions across the borough
Where a house is being refurbished or a basement dug out, a wired alarm is planned with the contractor. Cables go to every device position at first fix, before plastering and joinery, and the panel, keypads and detectors are fitted at second fix. The design can then include the new basement, plant room and any lift.
- Cable routes agreed with the contractor before first fix
- Wired detectors positioned around joinery and lighting plans
- Second-fix commissioning once finishes are complete
Most of Kensington and Chelsea is covered by conservation areas and the borough has thousands of listed buildings, so listed building consent may be required before anything is fixed to the outside of a listed property.
How pricing works
What a burglar alarm costs in Kensington & Chelsea
Every system is priced after a free survey, with a written quote before any work starts. These are the options we fit most often.
Most homes
Wireless Ajax alarm
Free survey
- Finished, lived-in homes
- App control and instant alerts
- Usually fitted in a day
Wired or hybrid alarm
Free survey
- Renovations and new builds
- Cable already in, or run at first fix
- Texecom, Pyronix or Ajax Hybrid
Alarm upgrade
Free survey
- New panel and keypad
- Existing wired sensors kept
- Takeovers of other firms' systems
Prices depend on the number of doors, windows and rooms. Anything that adds cost — an outbuilding, long cable runs, scaffolding — is flagged at the survey, never on the day. Monitoring and SIM connectivity are optional extras quoted separately.
How it works
From first call to protected
Free site survey
We walk the property with you and check every door, window and approach before anything is priced.
Written quote
Every device by make and model, the labour and the payment terms. Usually with you within 24 hours.
Installation day
Dust sheets down, tidy cable routes, and every detector walk-tested before we leave.
Handover
App set up on your phones, everyone shown how to arm and disarm, and a completion certificate for your records.
Where we work
Covering every part of Kensington & Chelsea
We install burglar alarms across the London Borough of Kensington and Chelsea — postcodes SW3, SW5, SW7, SW10, W8, W10, W11, W14 — and the neighbouring boroughs.
ChelseaSouth KensingtonNotting HillHolland ParkEarl's CourtBromptonNorth KensingtonLadbroke GroveAll London boroughs →Westminster →Hammersmith & Fulham →Wandsworth →
Free, no obligation
Book a free alarm survey in Kensington & Chelsea
Tell us a little about the property and what's worrying you. We'll call back the same working day to book a time.
- ✓Call us020 8422 7918
- ✓Emailinfo@satfocussecurity.co.uk
- ✓HoursMon–Fri 8am–6pm · Sat 8am–5pm
FAQs
Burglar alarms in Kensington & Chelsea: your questions answered
How is an alarm laid out in a five-storey Kensington townhouse?
We start with the levels an intruder can reach: the basement, lightwell, raised ground floor, garden and any roof terrace. Those get contacts and motion detection. Upper bedroom floors are usually left out of the night setting so you can move freely. A keypad or key fob by the bedroom and the app give you control without walking downstairs.
Can I put an alarm in my mansion flat without the freeholder's permission?
Inside your own flat, a wireless system normally needs only small fixings and no alterations, so it rarely conflicts with the lease. External sirens, bell boxes or anything in the common hallway need the freeholder or managing agent's consent. Check your lease if it restricts fixings, and we can provide a device list for the managing agent if they ask.
Can the alarm cover the garage in my Notting Hill mews house?
Yes. Mews garage doors are large and often the main entrance, so we fit a contact designed for that door type and a detector inside the garage. If you park inside, the garage can be its own area, letting you open it to drive out while the rest of the house stays armed.
We are digging out a basement in Chelsea. When should the alarm be planned?
Before first fix. A wired system needs cables run to each detector, contact and keypad position while walls and ceilings are open. We work from the architect's or contractor's drawings, run the cables at first fix, then return at second fix to install and commission the system once decoration is finished.
How much does a burglar alarm cost in Kensington & Chelsea?
Every system is priced after a free survey, with a written quote before any work starts. Your exact price depends on the number of doors, windows and rooms, and is confirmed in writing after a free survey.
Wired or wireless — which is right for my home?
If your home is finished and lived in, wireless is usually best: no chasing walls, no redecorating, and most homes are done in a day. If you are renovating, a wired system run at first fix before plastering is the better long-term choice, installed at second fix once decorating is done.
Can you take over or upgrade my existing alarm?
Usually, yes — including systems we did not install. Where the existing wiring and detectors prove sound we keep them and replace the panel and keypad, which costs far less than a new system and can add smartphone control.
What guarantee do I get?
A 12-month guarantee on our installation work, alongside the manufacturer's warranty on the equipment we supply. You also receive a completion certificate for your records.
Ready to protect your Kensington & Chelsea property?
Free survey, written quote, no obligation.