How to Choose a Security System Installer: 8 Questions to Ask Before You Hire
Most people spend a lot of time choosing their security equipment — which camera, which alarm panel, which access control system. Far less time goes into choosing who actually installs it. That's a mistake. A poorly done installation creates problems that outlast any warranty: blind spots in coverage, failed cable runs, panels that can't be serviced by anyone else, and systems that the next installer has to pull out and redo from scratch.
These eight questions are specifically about security system installation — cameras, alarm panels, access control, and related infrastructure. They are not about security guard services, which is an entirely different industry. If you are hiring someone to install and configure a physical security system on your property, this is the checklist that matters.
1. Will You Do a Site Assessment Before Quoting?
A security system designed without seeing the actual property is guesswork. Effective camera placement depends on the building's geometry, lighting conditions, the width of entry points, and what the client actually needs to see — none of which can be determined from a floor plan or a phone call.
The same applies to alarm systems: sensor placement, panel location, cable routing, and the suitability of wireless vs. hardwired components all depend on the specific structure. A company that provides a fixed price without visiting the site is quoting based on assumptions, not facts. When those assumptions are wrong, the scope changes — and the bill usually goes up.
2. Will You Provide a Written Scope of Work and Itemized Quote?
Once the site has been assessed, the next step is a written quote that documents exactly what was agreed on. A verbal agreement about what will be installed, where, and at what price is not an agreement — it is a memory. Security system installations vary significantly in scope, and the difference between a quote and a final invoice can be substantial if the terms were never documented.
Ask for a written scope of work that specifies: the exact equipment being installed (make, model, and quantity), the location of each device, the cable routing approach, how the system will be configured, and the total cost with labour broken out separately from materials. Companies that resist providing this level of detail before starting are companies that benefit from ambiguity — which is not a position you want to be in after the work is done.
3. Do You Carry General Liability Insurance and WSIB Coverage?
Any tradesperson working on your property should carry commercial general liability (CGL) insurance and should be registered with the Workplace Safety and Insurance Board (WSIB). CGL protects you if the installer damages your property during the job. WSIB coverage means that if a technician is injured while working on your premises, the liability does not fall to you as the property owner.
Ask for a copy of the CGL certificate before signing anything. A reputable installation company will provide this without hesitation. If they cannot, the financial risk of the work lands on you.
4. What Equipment Brands Do You Install, and Is the System Open-Standard?
Some installation companies work exclusively with one brand — either because of a dealer agreement or because the manufacturer's system locks in recurring service revenue. The practical consequence for the property owner is limited flexibility: if you want to expand, upgrade, or switch installers, proprietary equipment may prevent you from doing so.
For cameras, ask whether the equipment is ONVIF-compliant — a widely adopted open standard that allows cameras from different manufacturers to work with different recording systems. For alarm panels, ask whether the panel is accessible to other qualified technicians or whether it can only be serviced by the original installer. DSC, Honeywell, and Ajax are examples of manufacturers whose systems can be serviced by any qualified technician — the programming is not locked to the installing company.
5. Do You Perform All Installations In-House, or Do You Subcontract?
Many companies that present themselves as installation companies are actually sales and coordination operations — they sell you a system and subcontract the physical installation to a rotating roster of technicians. This is not inherently a problem, but it creates accountability gaps. If the installation is done poorly, the company you signed the contract with may not have direct control over the technicians who did the work.
Ask directly: "Are the technicians who will install this system your employees, or subcontractors?" If subcontractors are used, ask how their work quality is verified and who is responsible for remedying installation defects.
6. Can You Show Documented Examples from Similar Properties?
A company that regularly installs commercial camera systems will approach a warehouse or retail floor differently than a company whose experience is primarily residential. The cable runs, the recording infrastructure, the number and placement of cameras, and the configuration of access control all depend on the type and use of the property.
References are a starting point, but more useful is documentation — a completed site diagram, an equipment list, or photos of a finished installation from a comparable property type. Companies that take installation quality seriously keep records of their work. Those records are also the fastest way to verify that what they are proposing for your property reflects genuine experience with similar projects.
7. What Does the Warranty Cover — Equipment and Workmanship?
Equipment warranties and workmanship warranties are distinct and should both be confirmed before signing anything. Equipment warranties come from the manufacturer — typically one to three years on cameras and panels, though this varies. Workmanship warranties cover defects in the installation itself — loose terminations, poor cable management, misconfigured recording schedules, improperly aimed cameras.
Ask for the warranty terms in writing. Verbal commitments to "come back and fix anything" are not enforceable. A written scope of work that specifies both the equipment installed and the labour warranty period gives you a clear basis for recourse if the system does not perform as described.
8. What Is Your Process for Service Calls After the Job Is Done?
Security systems require ongoing attention. Cameras need repositioning when site conditions change. Firmware needs updating. Components fail. Storage drives fill up. An installer who is unavailable or unresponsive after the job is done leaves you managing a technical system without support.
Ask specifically: "If a camera goes offline or the recorder fails six months from now, what is your process for service calls?" Find out whether they have a dedicated service line, whether service calls are charged separately after the warranty period, and what their typical turnaround time is. The answer tells you a great deal about how the company is actually structured day-to-day.
None of these questions require specialist knowledge to ask. A qualified, experienced installer will answer all of them directly and without hesitation. The ones who cannot are telling you something important before the work even begins.