Wireless alarms
Ajax wireless systems for finished, lived-in homes. No chasing, no redecorating, app control and instant alerts.
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Brockley · Forest Hill · Catford · SE
Burglar alarm installation in Lewisham
Lewisham ranges from large Victorian villas in Brockley and Forest Hill to interwar cottage-estate houses in Bellingham and Downham and new riverside flats in Deptford. We work out where your home is most exposed, design the alarm to suit, survey it in person, price it in writing, then fit the system and set it up on your phone.
- Installing since 2012
- 3,000+ installations
- 12-month guarantee on the installation
- Covering all of Lewisham
Alarms we install in Lewisham
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 Lewisham properties
The borough mixes substantial Victorian houses on the hills of Brockley, Honor Oak, Forest Hill and Sydenham with tightly packed terraces in Hither Green and Ladywell, interwar council-built houses in the south, and modern apartments around Deptford, New Cross and Lewisham centre. Many big villas have been split into flats, so the same street can need several very different designs.
Large villas in Brockley, Honor Oak and Forest Hill
Big semi-detached villas on steep roads often have a raised ground floor, a garden level at the rear and long back gardens. The rear garden level is usually the weak point, so it gets contacts and motion cover first. Wireless detectors keep fireplaces, cornices and stained glass untouched.
- Garden-level rooms and back doors treated as the priority
- Shock sensors on accessible sashes and stained-glass doors
- Repeaters added where walls are thick or floors are many
Victorian terraces in Hither Green, Ladywell and Catford
Two-storey terraces with a back addition, a kitchen extension and a rear gate onto an alley are common here. The alarm covers front and back doors, every ground-floor room and the bedroom above the back addition roof. A wireless system fits in a day with no redecorating.
Interwar houses on the Bellingham and Downham estates
These cottage-style houses, many now privately owned, have front and rear doors, modest gardens and often a side gate. A compact wireless alarm with contacts on both doors and motion detection downstairs gives solid cover, with pet-tolerant detectors where needed and alerts sent to your phone.
- Front and rear doors fitted with contacts
- Downstairs motion cover with pet-tolerant options
- Side gate or shed added as a separate zone if required
Riverside and town-centre apartments in Deptford and Lewisham
Newer blocks by Deptford Creek, the river and Lewisham station usually have fob-controlled entrances and balconies. A flat alarm protects your own door and any balcony or terrace door. Nothing is fixed to the outside of the building without the managing agent's consent, so an internal siren is the normal choice.
- Door contact on the flat entrance and balcony door
- Internal siren with phone alerts instead of external fixings
- Compact kit fitted without disturbing the decor
Lewisham has a number of conservation areas, including Brockley, Blackheath and parts of Sydenham and Forest Hill, and an Article 4 direction in some of them may restrict changes to front elevations, so a front bell box is worth checking with the council first.
Guide prices
What a burglar alarm costs in Lewisham
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 Lewisham
We install burglar alarms across the London Borough of Lewisham — postcodes SE4, SE6, SE8, SE12, SE13, SE14, SE23, SE26 — and the neighbouring boroughs.
BrockleyCatfordDeptfordNew CrossForest HillSydenhamLeeHither GreenAll London boroughs →Greenwich →Southwark →Bromley →
Free, no obligation
Book a free alarm survey in Lewisham
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 Lewisham: your questions answered
How do you alarm a Brockley villa with a raised ground floor and garden level?
The garden level is usually where an intruder would try first, so its doors get contacts and its rooms get motion detection. The raised ground floor is covered next, with shock sensors on any reachable sashes. Upper bedroom floors are left out of the night setting so the household can move around without triggering the alarm.
My Hither Green terrace backs onto an alleyway. Does that need anything extra?
Rear alleys give quiet access to the back of the house, so the kitchen door, back addition and any rooms facing the garden are covered first. A shock sensor on the back door glazing warns of an attempt before entry. If you have a shed or workshop, it can be added as its own zone.
We own a house on the Downham estate. Is a wireless alarm suitable?
Yes. These houses are well suited to a compact wireless system: contacts on the front and back doors and motion detection in the downstairs rooms. It is usually fitted in a day with no redecorating. Everything is controlled from the app, and alerts go to your phone and anyone else you add.
Can I fit an alarm to my flat in a converted Forest Hill house?
Yes. A wireless alarm inside your own flat covers your entrance door and main rooms without touching the shared hallway. For an external siren on the front of the house, the freeholder must agree first. If you own the garden flat, the rear garden door is included as a priority.
How much does a burglar alarm cost in Lewisham?
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 Lewisham property?
Free survey, fixed written price, no obligation.