Thinking About A New Burglar Alarm? Costs, Timelines And Wired Vs Wireless Explained

If upgrading your home security is on your New Year list, a modern intruder alarm is one of the most effective, visible deterrents you can choose. This guide walks you through the essentials so you can plan with confidence. You will learn what a typical system includes, whether wired or wireless suits your home, how long installation takes, what drives cost, and why using certified security engineers is worth it. You will also find maintenance tips and upgrade paths, plus a simple next step to get a tailored quote after a free survey in Kent and Sussex.

What a home intruder alarm includes

A well designed domestic system usually combines:

Control panel and keypad, the brain of the system with a user interface
Door and window contacts for the main entry points
Motion detectors for circulation areas and rooms of interest
External siren with strobe, a strong street facing deterrent
Internal sounder for an audible alert inside
Communication module, app connectivity and optional professional monitoring
Backup battery to maintain protection during power cuts

The right mix depends on layout, pets, outbuildings and how you like to arm and disarm the system. An engineer survey will map risk areas, assess cable routes or wireless signal strength, and design a system that is simple for you to live with every day.

Wired vs wireless, which is better?

Both can be excellent when designed and installed properly. The best choice depends on your property and priorities.

Wired Alarms:

Pros: rock solid reliability, no batteries in sensors to replace, excellent for new builds or renovations where cables can be hidden, typically lower long term maintenance
Cons: more disruptive in finished homes if cable routes are difficult, longer install time in some cases

Wireless Alarms

Pros: faster and cleaner installation, flexible for finished homes and rentals, easy to expand with extra sensors, modern encrypted radios are robust and secure
Cons: periodic battery replacement in sensors, careful planning needed for radio coverage in larger or dense properties

A hybrid approach is common, for example a wired panel and bell with wireless detection in selected areas. During your survey we will test signal strength, confirm cable options and recommend the balance that fits your home and budget.

How much does a new alarm system cost?

Prices vary with size, grading, features and monitoring. As a guide for UK homes:

Small flats or compact terraces: from roughly £500 to £900 for a basic, professionally installed system with a few sensors
Typical three bed semi or townhouse: £900 to £1,800 for a tailored system with entry contacts, several motion detectors and an external siren
Larger homes or properties with outbuildings: £1,800 to £3,500 plus, reflecting extra zones, outbuilding links, partial perimeter protection and smart features

Professional monitoring, police URNs where applicable, app subscriptions and maintenance plans are additional and depend on the level of service you choose. Because every property is different, an engineer led survey is the most accurate way to confirm price.

What is the average cost of a home alarm system in the UK?

Most homeowners end up in the £900 to £1,800 bracket for a well specified system with professional installation. If you need extensive coverage, outbuilding protection, dual path monitoring or integration with CCTV,expect the upper end or above. We prefer to give a fixed quote after a free survey so you only pay for what you actually need.

How long does it take to install a house alarm?

Wireless or hybrid in a typical house: 4 to 8 hours
Fully wired in a finished home: 1 to 2 days, depending on cable routes and making good
Larger or complex properties: 2 to 3 days, especially if integrating gates, garages or outbuildings

Good preparation shortens time on site. Our surveys identify cable paths, mounting points and any making good so your installation runs smoothly and cleanly.

What affects price and timeline?

Property size and layout: more rooms and entrances mean more devices and time
System grade and risk profile: higher risk homes often require more robust designs and signalling options
Smart features: app control, smart home links and automation add modules and commissioning time
Monitoring level: self monitoring via app, professional monitoring or police response all influence hardware and recurring costs
Aesthetics and making good: premium finishes or concealed cabling can increase labour
Third party integration: linking with CCTV, lighting or access control adds design and test time

Can an electrician install a burglar alarm?

A competent electrician understands wiring, but intruder alarms involve specialised design, risk grading, signalling paths, tamper protection and compliance. Certified security engineers design to industry standards, programme zones correctly, test devices and signalling, and provide maintenance and monitoring options. For reliability, insurance acceptance and long term support, choose a dedicated security installer rather than a general electrician.

Maintenance, warranties and ongoing support

Alarms are low maintenance when installed correctly. Plan for:

Annual or biannual service visits to test detectors, sirens, batteries and signalling
Sensor battery changes for wireless devices every year, usage dependent
App and firmware updates to keep features and security current
Documentation and refresher training if needed after changes to your household
Call outs are inclusive when under a maintenance agreement (in most cases)

Proactive maintenance keeps false alarms low and ensures your system responds when you need it.

Upgrade paths and future proofing

If you are refreshing an older system, you do not always need to start again. Options include:

Retaining good cabling and bell boxes, upgrading the control panel and detectors
Adding wireless peripherals to extend coverage without chasing walls
Enabling app control and notifications with a modern communicator
Moving from bells only to professionally monitored signalling
Integrating with CCTV for smarter alerts and quicker verification

An engineer survey will confirm what can be reused and where new equipment adds value.

Local, engineer led surveys in Kent and Sussex

Blackhawk Security provides bespoke design, installation and maintenance with certified, enhanced DBS checked engineers. Surveys and quotes are carried out by engineers, not salespeople, so you get practical advice that fits your home. We are based in Crowborough and support homeowners across Kent and Sussex with friendly service, competitive pricing and 24/7 support options. If you are comparing options, our team is happy to explain wired, wireless and hybrid designs and show you exactly how the kit will work in your property.

If you are local and researching providers, you can learn more about our intruder systems here: intruder alarms crowborough. We also design and install CCTV if you want a joined up approach, see CCTV Systems Crowborough.

Summary and next steps

Wired, wireless or hybrid can all be excellent when designed properly
Typical UK installs take half a day to two days, depending on size and cabling
Most homes spend £900 to £1,800, with extras for large properties and monitoring
Certified security engineers deliver better reliability, compliance and support than general electricians
Maintenance is simple with planned servicing and occasional battery changes
Upgrades can reuse parts of your existing system and add smart features

Ready to plan your alarm with confidence? Book a free, engineer led survey and get a tailored quote for your home in Kent or Sussex. Call 01892 800885 or email here to get started. If you are near Tunbridge Wells, explore our Royal Tunbridge Wells Burglar Alarm Service to see local options and response times.