Locked out of your San Mateo home or car? Need emergency locksmith services at 2 AM? Diamond Locksmith has been serving San Mateo families and businesses since our founding, providing fast, professional locksmith services throughout the entire San Mateo area. Based right here on 37th Avenue, we know every street, neighborhood, and shortcut in San Mateo—which means we can typically arrive at your location within 20 minutes or less.

Whether you're dealing with a residential lockout in Baywood Park, need commercial lock services downtown, or require automotive key programming near the Caltrain station, our licensed and insured technicians are ready to help. Call us now at (650) 867-5988 for immediate assistance.

Complete Locksmith Services for San Mateo Residents & Businesses

🏠 Residential Locksmith Services

Locked Out of Your San Mateo Home? We understand how stressful it can be. Our residential locksmith services include:

• Emergency Home Lockouts - Fast entry without damage to your door or locks

• Lock Rekeying - Perfect for new homeowners in San Mateo neighborhoods like Shoreview, Beresford, and Hillsdale

• Smart Lock Installation - Upgrade your San Mateo home with keyless entry systems

• Deadbolt Installation & Upgrades - Enhanced security for San Mateo's diverse housing stock, from historic homes to new Bay Meadows developments

• Lock Repair & Replacement - Same-day service for broken or worn locks

• Master Key Systems - Convenient access control for multi-unit properties

Many San Mateo homeowners come to us after purchasing older properties that need complete lock upgrades. We've helped hundreds of families in neighborhoods throughout San Mateo secure their homes with modern, high-security locks that provide peace of mind.

🏢 Commercial Locksmith Services

Serving San Mateo's Business Community - From downtown San Mateo's retail corridor to the office buildings near Highway 101, we provide comprehensive commercial locksmith solutions:

• Office Lockouts - Quick response to get your business back in operation

• Commercial Lock Installation - ADA-compliant and building code-certified

• Master Key Systems - Efficient access management for multi-tenant buildings

• High-Security Lock Systems - Advanced protection for San Mateo businesses

• Access Control Systems - Electronic entry systems with audit trails

• Panic Bar & Exit Device Installation - Fire code compliance for San Mateo commercial properties

• Lock Rekeying for New Tenants - Fast turnover for landlords and property managers

Located near the San Mateo County Government Center and downtown business district, we understand the importance of security and rapid response for San Mateo's commercial community.

🚗 Automotive Locksmith Services

Car Lockout in San Mateo? Whether you're stranded at the Hillsdale Shopping Center parking lot or locked out near the Caltrain station, we provide fast automotive locksmith services:

• Car Lockouts - Safe, damage-free entry to any vehicle

• Transponder Key Programming - All makes and models

• Car Key Replacement - Lost your keys? We can create new ones on-site

• Ignition Repair & Replacement - Won't turn? We can fix it

• Key Extraction - Broken key stuck in your ignition or door? We'll remove it safely

• Key Fob Programming - Modern key fobs programmed and tested

San Mateo's proximity to SFO means we help many residents with automotive key emergencies before flights or after returning home. We've assisted countless drivers in parking lots throughout San Mateo—from the downtown area to Bay Meadows and beyond.

Why San Mateo Trusts Diamond Locksmith

📍 Based Right Here in San Mateo

Our office is located at 3 37th Avenue #10, San Mateo, CA 94403—we're not a distant service dispatching technicians from far away. We're your neighbors, and we know San Mateo inside and out:

• Baywood Park & Baywood Knolls - Quick access via Borel Road

• Downtown San Mateo - Minutes from B Street and the downtown corridor

• Shoreview & Beresford - Fast response via El Camino Real

• Hillsdale Area - Near Hillsdale Shopping Center and surrounding neighborhoods

• Bay Meadows - Familiar with the newer construction and modern lock systems

• Aragon & Parkside - Serving the entire central San Mateo area

We understand San Mateo traffic patterns, know the fastest routes during rush hour, and can navigate to any address quickly—even the tricky-to-find locations in older neighborhoods.

⚡ Fast Response Time

Average arrival time in San Mateo: 15-20 minutes

Because we're based right here in San Mateo, we don't waste time traveling from Redwood City or Burlingame. When you're locked out or facing a security emergency, every minute counts. Our proximity means you get help faster than competitors based outside the area.

💰 Flat-Rate Pricing - No Surprises

We provide honest, upfront pricing over the phone before we arrive. No hidden fees, no surprise charges, no inflated rates for emergency service. What we quote is what you pay.

• Transparent pricing discussed before service begins

• Competitive rates without compromising quality

• Senior & military discounts available

✅ Licensed, Insured & Professional

Diamond Locksmith is fully licensed and insured to operate in San Mateo County. Our technicians are:

• Background-checked for your safety and peace of mind

• Highly trained in the latest locksmith techniques and technology

• Professionally equipped with modern tools and genuine parts

• Courteous and respectful of your property

What San Mateo Customers Say

⭐⭐⭐⭐⭐ "Locked out at midnight on a Tuesday"
"I locked myself out of my Beresford home at midnight and called Diamond Locksmith. Ray arrived in about 20 minutes and had my door open in less than 5 minutes. Professional, kind, and reasonably priced. Highly recommend!"
— Jennifer M., San Mateo

⭐⭐⭐⭐⭐ "Best locksmith in San Mateo"
"After moving into our new home near Bay Meadows, we wanted all locks rekeyed. Diamond Locksmith came the next day, completed thework efficiently, and even gave us advice on upgrading to smart locks. Great local service!"
— David & Sarah T., San Mateo

⭐⭐⭐⭐⭐ "Saved our business opening day"
"Our downtown San Mateo storefront lock failed on opening day. Ray came within 30 minutes, replaced the lock, and we opened on time. Can't thank Diamond Locksmith enough!"
— Marcus L., Downtown San Mateo

Complete San Mateo Service Area

We proudly serve all of San Mateo, including:

Neighborhoods:

• Baywood Park & Baywood Knolls

• Shoreview

• Beresford

• Downtown San Mateo

• Hillsdale

• Bay Meadows

• Parkside

• Central San Mateo

• Aragon

• North Central

• Hayward Park

Zip Codes: 94401, 94402, 94403, 94404

Near Major Landmarks:

• Hillsdale Shopping Center

• San Mateo County Government Center

• Downtown San Mateo (B Street corridor)

• Central Park

• Bay Meadows development

• Caltrain Station (San Mateo)

• College of San Mateo

• Mills Peninsula Medical Center

If you're in San Mateo, we serve your area. No location is too far when you're within our home city.

24/7 Emergency Locksmith Service

Lock emergencies don't wait for business hours. That's why Diamond Locksmith provides round-the-clock service, 365 days a year:

• Late-night lockouts - 2 AM, 3 AM, anytime

• Weekend emergencies - Saturday and Sunday, same fast service

• Holiday availability - We're here even on major holidays

• After-hours office access - Help for business emergencies

Whether it's a residential lockout on a Sunday morning or a commercial emergency on Christmas Eve, we answer the phone and dispatch immediately.

Why Choose Diamond Locksmith Over Other San Mateo Locksmiths?

🏆 Local Expertise

We're not a national chain—we're San Mateo born and raised. We understand the specific needs of San Mateo properties, from historic homes with vintage locks to modern Bay Meadows developments with smart home systems.

🔧 Full-Service Capabilities

From basic lockouts to complex commercial access control systems, we handle it all. No job is too big or too small for our experienced team.

📞 Real People Answer the Phone

When you call (650) 867-5988, you speak with real people who know San Mateo—not a call center in another state. We provide personalized service because we're part of your community.

🛡️ Family-Owned & Operated

Diamond Locksmith is a family business that takes pride in building long-term relationships with San Mateo residents and businesses. Your satisfaction is our reputation.

Common Locksmith Questions from San Mateo Residents

Q: How fast can you get to my San Mateo location?
A: Since we're based in San Mateo, we typically arrive within 15-20 minutes, depending on your specific location and current traffic conditions.

Q: Do you charge extra for nights, weekends, or holidays?
A: No. We offer flat-rate pricing regardless of when you need service. Emergency rates don't mean price gouging—we believe in fair pricing 24/7.

Q: Can you rekey my locks instead of replacing them?
A: Absolutely! Rekeying is often the most cost-effective solution, especially for San Mateo homeowners who've just purchased a property. We can rekey most lock brands on-site.

Q: Do you offer smart lock installation?
A: Yes! We install and program all major smart lock brands including August, Schlage Encode, Yale, Kwikset, and more. We'll ensure they integrate with your existing smart home system.

Q: What payment methods do you accept?
A: We accept cash, all major credit cards, and digital payment methods for your convenience.

               Contact Diamond Locksmith - San Mateo's Trusted Locksmith

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