The Most Recommended Commercial Security Companies in Denver — Measured on ChatGPT

Business owners in Denver don't just search anymore — they ask ChatGPT who to call. In July 2026 we put the answer on record: 16 separate checks, phrased 16 different ways, run against 65 Denver-area commercial security companies.

Only 9 of those 65 companies were ever recommended: a 14% hit rate. The most consistent answer was Denver Secure LLC, named in every one of the 4 checks.

Second and third went to Pre Action Fire, Inc and Master Security Center. 6 more companies round out the board below.

For scale: of the 34 metros in this edition, Denver's cohort of 65 commercial security companies was the 15th largest.

Only 9 of 65

commercial security companies in the Denver cohort ever came up in ChatGPT's answers (14%). The full measured list:

Fire alarm companies

Of the 19 Denver companies in our fire alarm cohort, 2 made ChatGPT's answers.

1
Pre Action Fire, Inc
Denver, CO · Recommended in 3 of 4 ChatGPT checks · 3 Google reviews
Pre Action Fire, Inc surfaced in 3 of the 4 checks when we asked. It has 3 Google reviews behind it.
2
National Fire & Safety | Mountain Region – Colorado
Denver, CO · Recommended in 1 of 4 ChatGPT checks · 65 Google reviews
Spot 2 belongs to National Fire & Safety | Mountain Region – Colorado — named in one of the 4 checks. Google shows 65 reviews for it.

Access control companies

2 of the 14 Denver-area companies we track for access control ever came up when we asked.

1
Master Security Center
Denver, CO · Recommended in 3 of 4 ChatGPT checks · 35 Google reviews
Master Security Center surfaced in 3 of the 4 checks when we asked. It has 35 Google reviews behind it.
2
Denver Secure LLC
Denver, CO · Recommended in 1 of 4 ChatGPT checks · 80 Google reviews
Spot 2 belongs to Denver Secure LLC — named in one of the 4 checks. Google shows 80 reviews for it.

Security cameras companies

Denver's security cameras board: 3 named, out of 14 we benchmarked.

1
Denver Secure LLC
Denver, CO · Recommended in 4 of 4 ChatGPT checks · 80 Google reviews
Denver Secure LLC surfaced in every one of the 4 checks when we asked. It has 80 Google reviews behind it.
2
Master Security Center
Denver, CO · Recommended in 1 of 4 ChatGPT checks · 35 Google reviews
Spot 2 belongs to Master Security Center — named in one of the 4 checks. Google shows 35 reviews for it.
3
Your Security Man
Denver, CO · Recommended in 1 of 4 ChatGPT checks · 27 Google reviews
Your Security Man was recommended in one of the 4 checks. It has 27 Google reviews behind it.

Commercial security systems companies

Across 4 commercial security systems checks in Denver, 2 of 18 verified companies were recommended.

1
Your Security Man
Denver, CO · Recommended in 1 of 4 ChatGPT checks · 27 Google reviews
Your Security Man surfaced in one of the 4 checks when we asked. It has 27 Google reviews behind it.
2
Paramount Audio Video Corp.
Denver, CO · Recommended in 1 of 4 ChatGPT checks · 23 Google reviews
Spot 2 belongs to Paramount Audio Video Corp. — named in one of the 4 checks. Google shows 23 reviews for it.

Measured July 2026 · 16 business owner-style questions · This list is measured, never sold — no company can pay to appear here. The companies named more often by ChatGPT rank higher.

The questions behind the Denver list

We asked these word-for-word, then recorded which companies came back in the answers:

“Who is the best fire alarm company in Denver, Colorado?”
“I need fire alarm installation and inspection for my building in Denver, Colorado. Who should I hire?”
“What is the most recommended fire protection company in Denver, Colorado?”
“What are the top rated fire alarm and fire protection companies near Denver, Colorado?”
“Who is the best access control company in Denver, Colorado?”
“I need a card access / door access control system installed at my business in Denver, Colorado. Who should I hire?”
“What is the most recommended access control installation company in Denver, Colorado?”
“What are the top rated commercial access control companies near Denver, Colorado?”
“Who is the best commercial security camera installation company in Denver, Colorado?”
“I need security cameras installed at my business in Denver, Colorado. Who should I hire?”
“What is the most recommended video surveillance company in Denver, Colorado?”
“What are the top rated CCTV installation companies near Denver, Colorado?”
“Who is the best commercial security systems company in Denver, Colorado?”
“I need security cameras and alarms for my business in Denver, Colorado. Who should I hire?”
“What is the most recommended commercial security company in Denver, Colorado?”
“What are the top rated business security system companies near Denver, Colorado?”

Denver, by the numbers

Denver Secure LLC appeared in 4 of 4 checks — the closest thing Denver has to a consensus answer.
3 of the 9 ranked companies were named in more than one check; the rest surfaced once.
The ranked companies hold 375 Google reviews between them.
Compared with the edition-wide average (14%), Denver's 14% sits below the line.

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About the Denver rankings

Does ChatGPT recommend many commercial security companies in Denver?

Very few. Of the 65 Denver-area companies we benchmarked in July 2026, only 9 were ever named across 16 checks — 14%. The rest never came up.

What's the most recommended commercial security company in Denver right now?

Right now, Denver Secure LLC — recommended in every one of the 4 checks, with Pre Action Fire, Inc next. The order reflects naming frequency in our checks, nothing else.

Which questions produced the Denver rankings?

We asked 16 business owner-style questions, such as "Who is the best fire alarm company in Denver, Colorado?", and logged each company ChatGPT named in response. All the phrasings we used are shown above.

Is a spot on the Denver board for sale?

No — and that's the point. Rankings are measured, never sold; no payment, sponsorship, or relationship puts a company here. Money cannot buy a place on this list.

My company serves Denver but isn't here — why?

It means ChatGPT never named it in our July 2026 checks — nothing more. That says nothing about the quality of the work, only that business owners who ask AI are being sent elsewhere. Most companies haven't shown up in AI answers yet.

Full methodology: how these rankings are measured. Want the national picture? See every metro we benchmark.