Choosing a security system in Dublin means picking between national names with city centre offices and local installers who know your street. Both can do the job well, so this list mixes the two.
We’ve ranked 11 companies covering alarms, CCTV and fire protection across the city and suburbs, using public ratings, review counts and service categories. Ranked on merit, never on money. Before you sign with anyone, read our notes on licensing, monitoring and quotes below.
#1. MJ Flood Security
Our top pick. MJ Flood Security is based in Baldonnell Business Park, just off the N7 near Citywest, and it covers three categories that often get split across separate contractors: closed circuit television, fire alarms and fire protection systems. If you want cameras and fire safety handled by the same supplier, that breadth is the draw. It also keeps things simple, because you are dealing with one company rather than two or three.
The location is practical for a big slice of the region. Baldonnell sits between the N7 and the M50, so Tallaght, Clondalkin, Lucan and the Naas Road corridor are all within easy reach, and the Kildare commuter towns are straight down the motorway. For homes and businesses on that western edge, it is about as convenient a base as you will find.
The public rating backs the top spot: 4.9 out of 5 from around 100 reviews at the time of writing. Read a spread of those reviews before you call, then ask for an itemised quote that separates the security and fire work. Good for: anyone who wants CCTV, alarms and fire protection handled together, and anyone in south-west Dublin who wants a supplier close by.
- Rating: 4.9/5 (100 Google reviews)
- Address: Clonlara Avenue, Baldonnell Business Park, Baldonnell, Co. Dublin, D22 V4F5
- Phone: +35316896390
- Website: mjfloodsecurity.ie/
#2. Securigard Alarms Dublin.
Securigard Alarms Dublin is a security system installer based in Rathfarnham, on the south side of the city. Rathfarnham sits close to the M50, which puts Terenure, Templeogue, Knocklyon, Ballyboden and the wider D14 and D16 postcodes within easy reach. For homeowners in those suburbs, a local installer usually means quicker site visits and easier follow-ups.
The review profile is the standout: 4.5 out of 5 from more than 400 public reviews at the time of writing. That is one of the largest review counts on this list, and a big sample gives a rating real weight. A score that holds up across hundreds of customers is harder to earn than a perfect score from a handful.
As with any installer, ask what the quote covers: equipment, installation, monitoring and aftercare. Get the proposal in writing and compare it against one or two others here. Good for: south Dublin households who want a local installer with a deep pool of reviews to read before deciding.
- Rating: 4.5/5 (425 Google reviews)
- Address: Rathfarnham, Dublin
- Phone: +353868133167
- Website: securigard.ie
#3. Encom Systems Ltd
Encom Systems Ltd is a security system installer working from a unit on the Crumlin Road in Drimnagh, Dublin 12. The spot is handy for the whole south-inner-city belt: Crumlin, Drimnagh, Walkinstown, the Coombe and the D8 and D12 postcodes. The Grand Canal and the Luas Red Line are close, so the city centre is an easy run as well.
The public rating is a perfect 5 out of 5, but it comes from only two reviews at the time of writing. Two reviews cannot tell you much on their own, so treat the score as a promising signal rather than proof, and let a direct conversation do the rest. Small review counts happen for all sorts of reasons, so it is not a mark against the firm.
Ask for references from recent jobs near you and get the quote in writing. Compare it against one or two others on this list before you commit. Good for: D12 and inner-south-city households and small businesses who prefer a firm based a few minutes away rather than across the county.
- Rating: 5/5 (2 Google reviews)
- Address: Unit 2, Encom Systems Ltd, Crumlin Rd, Drimnagh, Dublin 12, D12 P802
- Phone: +35314545465
- Website: encom.ie
#4. Deltech Security
Deltech Security is a security system installer on Mourne Road in Drimnagh, Dublin 12. Mourne Road runs between the Crumlin Road and the Grand Canal, so most of D12 is a short drive, and Bluebell, Inchicore and the canal corridor into town are close too. Two of the entries on this list are Drimnagh based, so D12 readers have genuine local choice.
The public rating is 4.9 out of 5 from 14 reviews at the time of writing. That is a near-perfect score from a modest sample, so the usual advice applies: read the reviews themselves, not just the number. Fourteen reviews is enough to spot a pattern if you read them closely.
Get the quote in writing and ask what aftercare looks like once the system is in. Good for: households in D12 and the canal-side neighbourhoods who want an installer based in the area rather than one driving in from the far side of the county.
- Rating: 4.9/5 (14 Google reviews)
- Address: 208 Mourne Rd, Drimnagh, Dublin, D12 Y1R7
- Phone: +353877869010
- Website: deltechsecurity.ie
#5. PhoneWatch – Home Security Experts Across Ireland
PhoneWatch is the national name on a list of mostly local firms. The listing styles itself ‘Home Security Experts Across Ireland’, and the categories back the breadth: burglar alarms, fire alarms and security system installation under one roof. The Dublin office sits in the Irish Life Centre on Abbey Street Lower, right by O’Connell Street and the Luas.
The review count is the headline: more than 3,500 public reviews with a 4.6 out of 5 rating at the time of writing, the largest sample on this list by a wide margin. A pool that size gives a rounded picture of how a company performs, so read a spread of recent reviews rather than the first few that load. Big national firms tend to work to standard packages, so ask what can be adjusted for your property.
Ask how monitoring, fees and contract length work before you sign. Good for: people who want a large national operation with a city centre office and a long run of customer feedback to sift through. If you would rather deal with a small local installer, several other entries here fit that bill.
- Rating: 4.6/5 (3592 Google reviews)
- Address: Block 1, Irish Life Centre, Abbey Street Lower, North City, Dublin 1, D01 Y7V2
- Phone: +35315827920
- Website: phonewatch.ie/?utm_source=googlemybusiness&utm_medium=organic&utm_campaign=Google%20My%20Business
#6. Aztec Security
Aztec Security is a security system installer based at Shelton Gardens in Terenure. Terenure is classic south Dublin suburbia, and the address puts Rathgar, Kimmage, Templeogue, Rathfarnham and the D6W and D12 postcodes within a short drive. A residential address is common for installers who spend their days out on jobs rather than behind a counter.
The public rating is 4.9 out of 5 from 39 reviews at the time of writing. Thirty-nine reviews is a reasonable sample for a local installer, enough to spot patterns if you read through them. Look for what people say about punctuality, tidy work and how problems get handled after installation.
Ask for a written, itemised quote and a reference from a recent job nearby. A Terenure base also makes follow-up visits simple if anything needs adjusting later. Good for: south Dublin households who want a nearby installer with a solid, readable body of reviews.
- Rating: 4.9/5 (39 Google reviews)
- Address: 3 Shelton Gardens, Terenure, Dublin, D12 X625
- Phone: +35314099222
- Website: aztecsecurity.ie
#7. Gard Alarms
Gard Alarms is listed as a security system supplier, based at Butterfield Close in Rathfarnham, Dublin 14. Butterfield sits between Rathfarnham village and Ballinteer, close to Marlay Park and the M50, so D14, D16 and the south county suburbs are all easy territory. Because the category is supplier rather than installer, ask exactly what is included when you call: equipment only, or supply plus fitting and aftercare.
The public rating is 4.9 out of 5 from 347 reviews at the time of writing. That is one of the deeper review pools on this list, and a 4.9 across that many customers is a strong showing. If fitting is part of the deal, ask whether the installation side is covered by the relevant Private Security Authority licence.
Good for: south county Dublin readers who want to compare a supplier’s package against the installers on this list. Make sure any quote separates equipment, installation and ongoing costs. A written, itemised quote makes comparison much easier.
- Rating: 4.9/5 (347 Google reviews)
- Address: 28 Butterfield Cl Ext, Rathfarnham, Dublin, D14 PF24
- Phone: +35314951557
- Website: gard.ie
#8. ESP SecurityLtd
ESP Security Ltd is a security system supplier based at Kandoy House on Fairview Strand, Fairview. It is one of the few northside addresses on this list, and a handy one: Fairview sits between the city centre and Clontarf, with Drumcondra, Marino, East Wall and the D3, D5 and D9 postcodes all close by. The Malahide Road and the DART from Clontarf Road keep the wider northside within easy reach.
The public rating is 4.9 out of 5 from 149 reviews at the time of writing. That is a healthy sample, big enough to read for patterns rather than outliers. As with any supplier, the key questions are about what happens after the sale: who installs, who services, and what the warranty covers. Ask whether installation is done in-house or subcontracted, and who you call if something faults out of hours.
A Fairview base also suits the docklands and the city centre. Good for: northside homes and businesses who want a supplier on their side of the Liffey. Get the aftercare and warranty terms in writing before you commit.
- Rating: 4.9/5 (149 Google reviews)
- Address: Kandoy House, 2 Fairview Strand, Fairview, Dublin
- Phone: +35318391188
- Website: espsecurity.ie
#9. SB Security
SB Security is based in Walkinstown, Dublin 12, and is listed under two categories: security service and security system installation. Walkinstown sits near the Long Mile Road and the M50, so Greenhills, Perrystown, Crumlin, Ballyfermot and the south-west suburbs are all close. The area has plenty of commercial units, so the location suits both homes and business premises.
The public rating is 4.9 out of 5 from 15 reviews at the time of writing. A near-perfect score from a small but real sample. Fifteen reviews can tell you a lot if they describe the work in detail, so read them in full and ask for a reference from a recent job in your neighbourhood.
The dual listing is worth a question when you call: ask which side of the work makes up most of their jobs. Good for: D12 and south-west Dublin readers who want a firm based minutes away. Compare the written quote against at least one other entry on this list, and get everything in writing before work starts.
- Rating: 4.9/5 (15 Google reviews)
- Address: Walkinstown, Dublin 12, D12 K7Y7
- Phone: +353830178205
- Website: sbsecurity.ie
#10. Knight Security
Knight Security is a security system installer with a 5 out of 5 public rating from 10 reviews at the time of writing. The listing gives no street address, just Dublin, so make coverage your first question when you call. Confirm they take jobs in your part of the county before you go any further. The lack of a published address is not unusual for installers who work from a van rather than a shopfront.
A perfect score from 10 reviews is encouraging but thin as evidence. Ten reviews is a starting point, not a verdict. Balance it against the basics: ask for their Private Security Authority licence number, a written itemised quote and a reference or two from recent customers. Any reputable installer will provide all three without fuss.
Good for: readers who are happy to do a little extra checking before deciding. If you want a bigger review pool to draw on, several other entries on this list have one. Either way, the licence check and the written quote matter more than the review count.
- Rating: 5/5 (10 Google reviews)
- Address: Dublin
- Phone: +35314502505
- Website: knightsecurity.ie
#11. Atom Alarms and Security Ltd Dublin
Atom Alarms and Security Ltd Dublin is based at 49 Fitzwilliam Square South, in the Georgian core of Dublin 2. Merrion Square, Baggot Street and the Grand Canal are all a short walk, and the address is well placed for the city centre, the south docklands and the D2 and D4 postcodes. The listing covers three categories: electrician, security service and security system installation.
That electrician category is a useful combination. Alarm and camera work often involves wiring, so a firm listed under both trades can be practical for jobs that cross the line between the two. For period buildings around the square, ask about discreet installation, because running cables in an older property takes more care. Confirm the split when you call, and ask who carries out the electrical side.
The public rating is 5 out of 5 from 65 reviews at the time of writing, a perfect score across a decent sample. Get an itemised quote and ask about aftercare before you sign. Good for: city centre and southside properties, especially jobs that mix electrical work with a new alarm or camera system.
- Rating: 5/5 (65 Google reviews)
- Address: 49 Fitzwilliam Square S, Dublin
- Phone: +353870515986
- Website: atomalarms.ie
What should you check before hiring a security installer in Dublin?
Start with the licence. In Ireland, companies that install and maintain electronic security equipment, including alarms and CCTV, must hold a licence from the Private Security Authority (PSA). Ask for the licence number and check it against the PSA’s public register before any work starts; it takes two minutes and filters out cowboys.
Then get the quote in writing. A proper quote lists the equipment, the installation cost, any monitoring fees and the warranty terms as separate lines. Ask who services the system after installation and what a call-out costs, because the ongoing relationship matters more than the day-one price.
Should you choose a monitored or self-monitored alarm?
A monitored alarm sends its signals to a monitoring centre. If the alarm trips, the centre contacts you and your keyholders, and some setups can escalate further. You pay a monthly or annual fee for that, on top of the equipment and installation.
A self-monitored system sends alerts straight to your phone instead. No monthly fee, but you are the response. It suits people who are usually reachable and happy to act on an alert themselves; it suits frequent travellers much less. Check your home insurance policy too, because some insurers set conditions around the type of alarm they will recognise.
How do you compare security system quotes properly?
Compare like for like. Two quotes can look similar in price while covering very different kit: the number of sensors, the camera resolution, the control panel, whether the system is wired or wireless. Ask each company to spec the same job, then line the quotes up side by side.
Look past the hardware. Check the warranty length, the cost of monitoring or app access, who owns the equipment when a contract ends, and what happens if you move house. Two or three itemised quotes will tell you more than any amount of online research.
Frequently Asked Questions
How much does a home security system cost in Ireland?
There is no single price. A basic wireless alarm for a small home costs less than a wired system with cameras and monitoring for a large house, and monitoring adds a monthly fee on top. The reliable approach is to get two or three itemised quotes that list equipment, installation and any ongoing charges separately, then compare like for like.
Do security installers in Ireland need a licence?
Yes. Companies that install or maintain electronic security equipment, including alarms and CCTV, must be licensed by the Private Security Authority, the state regulator for the private security industry. You can search the PSA’s public register by company name before you commit. If a contractor cannot give you a licence number, treat that as a red flag and keep looking.
Is a monitored alarm worth the monthly fee?
It depends on your situation. A monitored system sends alerts to a monitoring centre that can respond or contact you and your keyholders, which suits people who travel often or are away for long stretches. A self-monitored system sends alerts to your phone instead, with no monthly fee, but you carry the response yourself. Check whether your insurer has a preference before deciding.
Can I get a security system in a rented home or apartment?
Usually, yes. Wireless systems need little or no drilling, so they suit rented properties, and many can be removed and taken with you when you move. You should still check your lease and get the landlord’s written permission before installing anything fixed. For apartments, ask the management company about rules on cameras facing shared areas.
Will a security system reduce my home insurance premium?
Sometimes. Some Irish insurers offer a discount if you have a certified alarm, and some set conditions, such as requiring the alarm to be monitored or switched on when the house is empty. The discount rarely covers the full cost of a system, so treat it as a bonus rather than the reason to buy. Ask your insurer what qualifies before you commit.