Wireless alarms
Ajax wireless systems for finished, lived-in homes. No chasing, no redecorating, app control and instant alerts.
Ajax alarm systems →
Finchley · Hendon · Mill Hill · N3 · NW4 · NW7
Burglar alarm installation in Barnet
Barnet runs from Edwardian terraces in Finchley and the Arts and Crafts houses of Hampstead Garden Suburb to large detached homes in Totteridge and Mill Hill and new apartment blocks in Colindale. Every alarm is designed for the house, not a standard kit list: surveyed in person, priced in writing, fitted and set up on your phone.
- Installing since 2012
- 3,000+ installations
- 12-month guarantee on the installation
- Covering all of Barnet
Alarms we install in Barnet
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 Barnet properties
Barnet is one of London's larger outer boroughs, and its housing changes street by street. Interwar semis dominate much of Hendon, Edgware and Mill Hill, while Finchley and East Finchley have plenty of Edwardian terraces. Detached houses with long gardens line Totteridge and parts of Arkley, and Colindale has been rebuilt with thousands of new flats. Size, outbuildings and access all shape the design.
Detached houses in Totteridge, Arkley and Mill Hill
Bigger houses mean more doors, more ground-floor rooms and often a pool house, garden office or detached garage. Wireless range has to be planned, not assumed. We site the hub centrally, add range extenders where walls are thick, and put outbuildings on their own areas so they can be armed independently.
- Shock sensors on accessible ground-floor windows for higher protection
- Separate areas for the garage, gym or garden office
- Range extenders where long gardens or thick walls weaken the signal
1930s semis in Hendon, Edgware and Whetstone
These houses often have a loft conversion, a rear kitchen extension and a side return. The usual design is a contact on every external door, motion detection in each ground-floor room and cover for any first-floor room reachable from a flat-roofed extension. Most finished homes are done wirelessly in a day.
Arts and Crafts homes in Hampstead Garden Suburb
Leaded windows, original joinery and carefully controlled front elevations call for a light touch. Wireless detectors avoid chasing plaster, contacts are chosen to sit discreetly on period doors, and the external siren position is agreed before anything is fixed, as the Suburb's own design rules can apply.
- Wireless kit leaves original plaster and joinery undisturbed
- Discreet contacts chosen to suit period doors and casements
- Siren position checked against the Suburb's design guidance first
Refurbishments in Finchley and new flats in Colindale
If you are renovating, a wired system makes sense: cables are run at first fix before plastering, then the detectors and panel go in at second fix. In Colindale's new blocks, a compact wireless alarm inside the flat is usually enough, with external equipment only by agreement with the managing agent.
Homes in Hampstead Garden Suburb come under the Hampstead Garden Suburb Trust's scheme of management, so external alterations such as a siren box may need the Trust's consent as well as any council permission.
Guide prices
What a burglar alarm costs in Barnet
Starting prices so you can budget. Your exact price comes from the survey and is fixed in writing before anything is booked.
Most homes
Wireless Ajax alarm
From £995 inc VAT
- Finished, lived-in homes
- App control and instant alerts
- Usually fitted in a day
Wired or hybrid alarm
From £1,995 inc VAT
- Renovations and new builds
- Cable already in, or run at first fix
- Texecom, Pyronix or Ajax Hybrid
Alarm upgrade
From £495 + VAT
- 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.
Fixed 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 Barnet
We install burglar alarms across the London Borough of Barnet — postcodes N2, N3, N11, N12, N14, N20, NW4, NW7, NW9, NW11, EN4, EN5, HA8 — and the neighbouring boroughs.
FinchleyHendonGolders GreenHampstead Garden SuburbMill HillEdgwareHigh BarnetColindaleAll London boroughs →Harrow →Enfield →Camden →
Free, no obligation
Book a free alarm survey in Barnet
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 Barnet: your questions answered
Does a house in Hampstead Garden Suburb need permission for an alarm?
The alarm inside the house does not. Anything on the outside, such as an external siren, may need consent under the Hampstead Garden Suburb Trust's scheme of management, and a listed house could also need listed building consent. It is sensible to check with the Trust before installation; in the meantime, an internal siren and phone alerts protect the home.
My Totteridge house has a detached garage and a garden studio. Can one system cover everything?
Yes. One hub can manage the house and its outbuildings, with range extenders carrying the signal down the garden. Each building can be its own area, so the studio can be armed when you leave it at night while the house stays disarmed. Signal strength at each outbuilding is checked during the survey, before anything is quoted.
We're extending our house in Finchley. When should the alarm be planned?
Before the plasterers arrive. For a renovation we install a wired system in two stages: cables are run at first fix while walls and ceilings are open, then the panel, keypad and detectors are fitted at second fix once decorating is finished. Planning early means no surface trunking and no chasing finished walls later.
Can I keep the old alarm in my Mill Hill house and just add phone control?
Often, yes. If the existing wiring and detectors test sound, we replace the old panel and keypad with a current Texecom, Pyronix or Ajax hybrid control panel and keep the rest. You then arm, disarm and receive alerts through an app. Any faulty or poorly placed detectors are replaced at the same visit.
How much does a burglar alarm cost in Barnet?
A wireless Ajax alarm starts from £995 including VAT, a wired or hybrid system from £1,995 including VAT, and upgrading an old panel while keeping your existing wired sensors from £495 + VAT. Your exact price depends on the number of doors, windows and rooms, and is fixed 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 Barnet property?
Free survey, fixed written price, no obligation.