Ottawa has a deep bench of independent security installers, some of them decades older than the national chains that dominate flyers and cold calls. To build this list we read each company's own website plus public review platforms (Google, BBB, Birdeye, HomeStars) to confirm they are actually operating in the Ottawa area today. We could verify nine businesses to the standard we hold for this list. If a rating, review count or founding year isn't listed below, it's because we couldn't confirm it from a source we read, not because it doesn't exist.
1. Alliance Security Systems of Ottawa
Area: Ottawa region, headquartered in Manotick · Specialty: 24-hour ULC monitoring and smart home integration · Rating: 4.3 on Google (303 reviews)
Alliance has been in the Ottawa market for roughly 30 years and carries Better Business Bureau accreditation along with membership in the Ottawa Executives Association. Reviewers consistently mention owner Terrill by name for detailed pre-install advice and sticking around after the sale for support. It suits homeowners who want a locally accountable owner-operator rather than a call centre, and who care about extras like flood, gas leak and furnace failure sensors alongside a standard alarm.
2. RedFlag Security
Area: Ottawa and up to an hour out, including Kanata, Orleans, Barrhaven, Nepean, Stittsville, Manotick, Rockland and Greely · Specialty: 4K CCTV and ULC-certified alarm monitoring · Since: 2005
RedFlag is BBB A+ rated and holds a Three Best Rated designation for Ottawa security companies in 2026. The company advertises monitoring plans starting at $15.95 a month and, at times, a free wired alarm system with a multi-year monitoring contract. It's a fit for anyone weighing a bundled camera-plus-alarm package rather than piecing systems together separately.
3. Kodiak Security Systems
Area: Ottawa · Specialty: residential and commercial alarms, cameras and card access · Since: 1982
Family owned and operated since 1982, Kodiak describes itself as one of Ottawa's oldest independently owned alarm companies, with customer testimonials on its own site from long-time residential and business clients. Its longevity and local reputation make it a natural pick for homeowners who want a company that has already outlasted several generations of alarm technology.
4. Protek Installations
Area: Ottawa, Smiths Falls and Brockville · Specialty: Honeywell Total Connect and Alarm.com live monitoring · Since: 2009 · Rating: 5.0 aggregate from 119 reviews (Birdeye)
Protek is locally owned and says it never subcontracts installations, which shows up in reviews that repeatedly praise the same technicians by name. It also has relationships with local homebuilders including EQ Homes, Mattamy and Minto, so it's a strong option for new-build homeowners pre-wiring a house rather than retrofitting an older one.
5. Onvision Security
Area: Ottawa and the surrounding region · Specialty: 4K surveillance, card access and intercom systems · Rating: 5.0 aggregate from 92 reviews (Birdeye)
Onvision works with established equipment brands including Honeywell, Hikvision, DSC and Paradox rather than a single proprietary system, and it also offers IT support alongside security, which is useful for anyone networking cameras into an existing home setup. Customers cite responsive service and modern equipment as the recurring themes.
6. CSI Secure One
Area: Ottawa, Kanata, Stittsville, Manotick, Orleans, Gloucester, Nepean and Kemptville · Specialty: environmental sensors (smoke, CO, water leak) and smart home integration
CSI is BBB accredited, a CANASA member and ULC certified, and it leans on the fact that its team lives in the neighbourhoods it services rather than dispatching from outside the region. It's a solid option for homeowners who want smoke, carbon monoxide and water leak monitoring bundled into the same system as intrusion detection, not sold as a separate add-on.
7. Smart Security Ottawa
Area: Ottawa · Specialty: same-day installation of Honeywell alarms and Ring video doorbells · Since: company states over 20 years serving the community
Smart Security Ottawa's own site cites more than 2,000 customers served and features a customer testimonial praising quick, efficient service, though we couldn't independently verify those figures on a third-party platform. Its focus on same-day install makes it a practical option for renters or new homeowners who want a system up before their first night in a new place.
8. HSMP Inc.
Area: Greater Ottawa-Carleton region · Specialty: month-to-month monitoring contracts and custom home automation · Since: 1983 · Rating: 5.0 from 11 reviews (Birdeye)
HSMP has been operating in the region for over four decades and is one of the few companies on this list that doesn't lock customers into long-term monitoring contracts, offering month-to-month terms with equipment warranty instead. Reviewers on HomeStars point to it being noticeably cheaper than the big national providers while still offering comparable home automation options.
9. Deterex Security
Area: Ottawa, based in Centrepointe · Specialty: residential and commercial surveillance and structured cabling · Since: 2007 · Rating: 5.0 on Google (2 reviews)
Deterex is a smaller, lower-profile operation than most others on this list, with limited online visibility but a strong perfect rating from the handful of reviews we could find. It's worth a call if you want a smaller Ottawa-based team handling both the security system and any structured cabling work in the same visit, rather than coordinating two separate contractors.
How We Built This List
This list was compiled from public web sources, including each company's own website, Google Business listings, the Better Business Bureau, Birdeye and HomeStars. It is not a paid placement, and no business on it paid for inclusion or ranking. ottown has not tested, installed or personally used any of these companies' systems; this list reflects publicly available information and reviews as read online. We could confirm ratings and review counts only where a source explicitly stated them, and we left the field blank rather than guess where it wasn't available. Last reviewed: August 2026.
Main sources: TOP 10 Security System Installers Ottawa 2026 (pipl.systems), individual company websites, and Birdeye/Google review aggregates for each business.
