Same Day · San Mateo
Same-Day Locksmiths in San Mateo, CA
Can't wait a week? These locksmiths in San Mateo offer same-day or next-day appointments. Call now to check availability.
As of May 2026, RatingsNearMe ranks 6 locksmiths in San Mateo, CA by verified customer ratings and review volume. The highest-rated is A1 Locksmith with a 4.9-star rating from 174 verified reviews. Also in the top tier: Go Pro Locksmith and Diamond Locksmith. The average rating across all listed locksmiths in San Mateo is 4.8 stars from 98 reviews per business on average.
Locksmith services in San Mateo: lockout service $75–$200; rekeying $100–$250; lock installation $150–$400.
Rankings updated May 17, 2026 · Scored by ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
6
Businesses listed
4.8★
Avg rating
98
Avg reviews
May 17, 2026
Last updated
Top Rated Locksmiths
A1 Locksmith
1948 Edinburgh St, San Mateo, CA 94403, USA
Go Pro Locksmith
4039 Transport St Ste.103, Palo Alto, CA 94303, USA
Diamond Locksmith
3 37th Ave #10, San Mateo, CA 94403, USA
Locksmiths Rankings in San Mateo, CA
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | A1 Locksmith1948 Edinburgh St, San Mateo, CA 94403, USA | 4.9★ | 174 |
| #2 | Go Pro Locksmith4039 Transport St Ste.103, Palo Alto, CA 94303, USA | 4.9★ | 128 |
| #3 | Diamond Locksmith3 37th Ave #10, San Mateo, CA 94403, USA | 4.8★ | 118 |
| #4 | San Mateo Lock Works & Safe Center321 2nd Ave, San Mateo, CA 94401, USA | 4.7★ | 116 |
| #5 | KeyMe Locksmiths100 De Anza Blvd, San Mateo, CA 94402, USA | 4.5★ | 50 |
| #6 | SARCO'S LOCK WORKS306 Baldwin Ave, San Mateo, CA 94401, USA | 5.0★ | 4 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated May 2026
All Locksmiths in San Mateo
San Mateo Lock Works & Safe Center
321 2nd Ave, San Mateo, CA 94401, USA
KeyMe Locksmiths
100 De Anza Blvd, San Mateo, CA 94402, USA
SARCO'S LOCK WORKS
306 Baldwin Ave, San Mateo, CA 94401, USA
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Frequently Asked Questions — Locksmiths in San Mateo
How do I find the best locksmiths in San Mateo?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked locksmiths in San Mateo on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are locksmiths in San Mateo licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, CA requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do locksmiths charge in San Mateo, CA?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a locksmiths in San Mateo?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the locksmiths on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
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How Rankings Work on This Page
Every locksmiths on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: May 17, 2026.
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