Analyzing 7,476,5457.5M ReviewsFor 21,05821.1K Experts

Experts Reviews · Company report
Foster Brothers Security Systems logoHow 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 55%88+48Reliability 24%90+21.8Value 14%100+14.1Replies to reviews 7%53+3.7Experts Score= 88Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.88SCORE

Foster Brothers Security Systems

Santa Clara, CA · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #19Position by Experts Score among all companies we track in this category. of 36 security guard services · 4.8★ from 182 Google reviews

📞 Call (408) 736-4500Request a call backWebsite ↗

Report card

Percentile vs other security guard services (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: value and momentum; weakest: replies to reviews.

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.Foster Brothers Security Systems is better than 88% of security guard services.A
88
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.Foster Brothers Security Systems is better than 90% of security guard services.A
90
Craft & serviceCraft & service · 0% of the scoreGoogle 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.Foster Brothers Security Systems is better than —% of security guard services.–
—
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.Foster Brothers Security Systems is better than 100% of security guard services.A
100
MomentumMomentum · 0% of the scorePenalises 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.Foster Brothers Security Systems is better than 100% of security guard services.A
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.Foster Brothers Security Systems is better than 53% of security guard services.C
53

Reviews for your job

Customers hired Foster Brothers Security Systems for 8 kinds of job.

Foster Brothers Security Systems for standard key copying

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.5
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).5.00
Usually paidThe price range customers picked most often for this job.$500+
Rank for this jobPosition of this company in the Job match ranking for this job among the companies we track.Its Job match: 92/100.How Job match is calculatedBuilt only from reviews Google tagged “Standard key copying”:Stars on this job 55%Number of such jobs 25%Overall Experts Score 20%Stars are pulled toward the category average when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.#1 / 1
Said fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.100%

All 5 Google reviews tagged “Standard key copying”

Robert6 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. · Edited 2 days ago★★★★★

We are a commercial lock, door, and safe company. We have National accounts and Foster Brothers Security Systems is our go-to company for our South SF Bay Area markets. Fast service. Always had the time and part. Been working with this company for years. Thank you!!!

Great priceBuilding lockoutsSafe lock install, open & repairLock rekeying
DeniseLocal Guide · 35 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 months ago★★★★★

I had 3 copies made for a file cabinet. The service was super fast for high quality duplicate keys for a great price. I also conveniently picked up some accessories for the keys. Fantastic customer service and they are VERY knowledgeable and gave excellent advice. All the keys worked perfectly! Highly recommend Foster Brothers!

Great priceStandard key copying
Serena4 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 months ago★★★★★

Super fast turnaround time and high quality. They charge less than stupid key-copying machine, who made a key copy that doesn’t work and I have no where to complain about… Foster brother did me a favor to fix the non-functional key copy made by machine earlier. Highly recommend this store!

Paid $1–20Great priceStandard key copying
PatLocal Guide · 18 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. · 10 months ago★★★★★

Three generations of my family have sought out Foster Brothers Security Systems, Inc. when they needed a locksmith. It is a first-class operation. As a local Realtor®, I recommend Foster Brothers whenever possible. Twice this year, both personally and professionally, Foster Brothers exceeded all expectations. Mike…

Reasonable priceLock rekeyingDoor lock & bolt hardware repairInstallation
paul4 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 months ago★★★★★

Rating only, no written review.

Paid $500+Reasonable priceLock rekeyingCoded key copyingDoor lock & bolt hardware repair

Price

$105-28% vs typical security guard services

Bar = middle half of what customers paid · gold mark = category median.

Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Great price 62%Reasonable 38%Overpriced 0%Not sure 0%

Jobs customers hired them for

JobReviewsCategory typical
Lock rekeying14—
Door lock & bolt hardware repair9—
Installation9—
Door lock & bolt hardware installation6—
Security door locks5—
Standard key copying5—
Coded key copying4—
Repair hardware3—

Compare with

VP Security Guards logoVP Security GuardsExperts Score 98Santa Clara · 5.00★Black Eagle Fire & Security, Inc. logoBlack Eagle Fire & Security, Inc.Experts Score 98Santa Clara · 5.00★Global Risk Solutions, Inc. logoGlobal Risk Solutions, Inc.Experts Score 98Santa Clara · 5.00★