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Alert Security & Patrol

Security guard service · Santa Clara, CA · reviewed since 2017

How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%98+57.5Reliability 26%97+25.3Value 15%87+13.2Experts Score= 96Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.96SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#10 of 36 security guard servicesPosition by Experts Score among all companies we track in this category. · better than 74%
5.0 ★★★★★ 42 Google reviews · 4 photos
100%five-star reviews
0%1–2★, last 20 reviewsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
0%reviews answered by the owner
Mar 2024latest review

Alert Security & Patrol at a glance

Customers describe Alert Security & Patrol as professional and responsive, noting that their guards are punctual, friendly, and attentive during nightly patrols at corporate and commercial sites. Reviewers highlight transparent pricing and helpful advice regarding property safety, including firearms training and protection against illegal occupation. With a perfect five-star rating from forty-two reviews, there are no common criticisms or low-star excerpts to indicate recurring issues with the service.

  • Google rating: 5.0 out of 5 from 42 reviews (100% five-star).
  • Reviews on this page: 42 Google reviews (31 with written comments).
  • Owner responses: the business replied to 0% of reviews.
  • Most recent review: March 25, 2024.
  • Service: Security Guard Company serving Santa Clara, California.

Data from Google, last updated October 26, 2026.

Score profile vs other security guard services

Score per factor (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: craft & service and satisfaction; weakest: value.

Satisfaction98Reliability97Craft & service100Value87Momentum–Replies to reviews–Satisfaction: 98 (median 89)Reliability: 97 (median 89)Craft & service: 100 (median 100)Value: 87 (median 90)
Alert Security & PatrolSecurity Guard Services median0 = centre, 100 = best
SatisfactionSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Alert Security & Patrol: 98/100 on this factor. Category median: 89.A
98
ReliabilityReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Alert Security & Patrol: 97/100 on this factor. Category median: 89.A
97
Craft & serviceCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Alert Security & Patrol: 100/100 on this factor. Category median: 100.A
100
ValueValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Alert Security & Patrol: 87/100 on this factor. Category median: 90.A
87
MomentumMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Not enough reviews for this factor yet. Category median: 100.–
–
Replies to reviewsReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 79.–
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Bar = this company · dark tick = category median.

Star ratings

42 Google reviews we collected

  • 5 stars42100%
  • 4 stars00%
  • 3 stars00%
  • 2 stars00%
  • 1 star00%

Praise vs complaints

Phrases our text analysis found in 31 written reviews

  • Praise28100%
  • Complaints00%

Topic share

How often each topic comes up in the written reviews

  • Quality & results932%
  • Staff & attitude932%
  • Speed & response414%
  • Price & value311%
  • Would recommend27%
  • Honesty & trust14%

What customers talk about

We read 31 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Used their on-going security service for our multiple corporate sites and we have been enjoying top notch service.”
  • “We were pleasantly surprised how professional and candor they are in their prices and security expertise.”
  • “They are fast to respond to respond and are worth every penny.”
  • “responsible professional great pricing ontime”
  • “I recommend ASP for any firearms training needs and especially safety!”
  • “Their forthcoming and honest service helps us understand how to protect our business and we appreciate them for that.”

praise complaint · found by our text analysis, Google review wording unchanged.

Recent reviews

vietkgLocal Guide · 12 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 years ago★★★★★

Used their on-going security service for our multiple corporate sites and we have been enjoying top notch service. Their forthcoming and honest service helps us understand how to protect our business and we appreciate them for that.

MerlinLocal Guide · 15 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 years ago★★★★★

They have been helping our commercial site for 5 years. They are fast to respond to respond and are worth every penny.

Khanh1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 years ago★★★★★

We have been using their services for our corporate headquarters. We were pleasantly surprised how professional and candor they are in their prices and security expertise. They helped alleciated alot of the on going problems. We also added extra security protocols to make sure we won't encounter it anymore Security…

AGENT1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 4 years ago★★★★★

Great private training on 8/16/2022 with Loc and Steve! Both trainers are very knowledgeable when it comes to safety, tactical drills, and technics in regards to firearms. They made our training fun and not intimidating as we are still beginners to firearms. I recommend ASP for any firearms training needs and…

PhamLocal Guide · 4 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 5 years ago★★★★★

Security is an important aspect to our safety and their security service is great!

GeorgeLocal Guide · 324 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 5 years ago★★★★★

I have used their professional advice especially from "Officer Dave" , about homeless/squatters who have illegally occupied my rental properties downtown San Jose. San Jose PD will not assist property owners & offer no help! I have used their "armed guard service" to sweep my properties to prevent further arson,…

Photos

Customer reviews

5.0 ★★★★★ 42 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
Anthony Andrade2 reviewsTotal number of Google reviews Anthony has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Great security services

vietkgLocal Guide · 12 reviewsTotal number of Google reviews vietkg has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Used their on-going security service for our multiple corporate sites and we have been enjoying top notch service. Their forthcoming and honest service helps us understand how to protect our business and we appreciate them for that.

Tam Duong1 reviewTotal number of Google reviews Tam has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

They doing great job to protect this property and patrol at night times

Merlin ValenciaLocal Guide · 15 reviewsTotal number of Google reviews Merlin has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

They have been helping our commercial site for 5 years. They are fast to respond to respond and are worth every penny.

Khanh Dinh1 reviewTotal number of Google reviews Khanh has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

We have been using their services for our corporate headquarters. We were pleasantly surprised how professional and candor they are in their prices and security expertise. They helped alleciated alot of the on going problems. We also added extra security protocols to make sure we won't encounter it anymore Security breach. Our buildings are safe and our place feels safe as well . We highly recommend them.

AGENT - FLIGHT231 reviewTotal number of Google reviews AGENT has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Great private training on 8/16/2022 with Loc and Steve! Both trainers are very knowledgeable when it comes to safety, tactical drills, and technics in regards to firearms. They made our training fun and not intimidating as we are still beginners to firearms. I recommend ASP for any firearms training needs and especially safety! I will definitely do another training with them in the near future! Thank you Loc, Steve, and Dave for giving us the training to gain the skills we need and to make us better to protect our love ones. Contact ASP to help you Educate, Train, and Protect the right way.

Nario Blanco2 reviewsTotal number of Google reviews Nario has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Great work!

Annafe Vicente2 reviewsTotal number of Google reviews Annafe has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Good security

precy calonzo8 reviewsTotal number of Google reviews precy has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Security is Great!!!!!

fred ak2 reviewsTotal number of Google reviews fred has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

we are happy with work and service very professional and ressponsible

  • Positive: Responsiveness, Professionalism, Value

Alert Security & Patrol on Google Maps →

Business details