CRS Locksmith San Francisco, CA



Lock Rekeying, Repair, and Security Upgrades in San Francisco, CA


When you move into a new home, fire a disgruntled employee, or lose a set of keys, your property's security is compromised. You don't know who has a copy of your key. However, running out to the hardware store to buy entirely new locksets is often an expensive and unnecessary hassle. We provide professional lock rekeying and repair services across San Francisco, CA. We manipulate the internal mechanics of your existing hardware, rendering old keys useless and restoring total access control to your property for a fraction of the cost of replacement.

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The Science of Lock Rekeying


A standard deadbolt contains a cylinder filled with small brass pins of varying lengths. The correct key pushes these pins to a perfectly aligned "shear line," allowing the cylinder to turn. When we rekey a lock, we remove the cylinder, discard the old pins, and insert brand new pins that correspond to a completely different key pattern. Your old hardware remains on the door, but the old keys will never turn it again. We then provide you with a fresh set of keys.

Lock Installation and Maintenance




Master Key Systems for Commercial & Residential


Do you have a heavy keyring pulling down your pocket? We can streamline your life. We can rekey the front door, back door, garage, and side gates so that one single key opens every lock in your house. For businesses in San Francisco, CA, we design complex Master Key Systems, allowing managers a single key to open all doors, while restricting employee keys to only their specific offices or zones.



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High-Security Lock Upgrades


Standard hardware store deadbolts are highly vulnerable to lock bumping and drilling. If you want to fortify your home's perimeter, we install high-security cylinders (such as Medeco, Schlage Primus, or Mul-T-Lock). These locks feature anti-drill hardened steel inserts, side-bitting pin variations, and restricted keyways, meaning nobody can duplicate your key without your authorized signature card.





Frequently Asked Questions


  • Is it cheaper to rekey or replace a lock? Rekeying is significantly cheaper. You are only paying for the labor and the microscopic brass pins, rather than buying the heavy metal housing of a brand new lockset.
  • Can any two locks be keyed to match? They must share the same keyway profile (e.g., both must be Schlage style, or both Kwikset style). If you have mismatched brands on your front and back doors, we can often replace the cylinder core of one so they match, allowing you to use one key for both.
  • My door lock is sticky and hard to turn. Does it need replacing? Often, no. Locks accumulate dirt and the internal springs wear out. We can disassemble the lock, clean it, lubricate the pins with specialized graphite or Teflon sprays, and repair it to smooth functioning.
  • What is a bump key? A bump key is a specially cut key used by criminals to force the pins inside a standard lock to jump to the shear line, opening the door in seconds with no signs of forced entry. We install bump-resistant pins and high-security locks to prevent this attack.
  • Can you rekey smart locks and electronic deadbolts? Yes. Most smart locks still have a manual override key cylinder for emergencies. We can rekey this mechanical override cylinder just like a traditional deadbolt.




Upgrade Your Home's First Line of Defense


Regain total control over who has access to your property. Let our security experts rekey or upgrade your locks today with precision and speed.

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Customer Reviews

"We just bought our first home and wanted to make sure nobody else had a key. They came out the same day we closed, rekeyed all 5 doors to a single key, and charged a very fair price."

"I run a retail store and had to let a manager go. I called them at 6 PM, and they were there by 7 PM to rekey the front doors and the office. Great peace of mind."

"The deadbolt on our front door was constantly jamming. Instead of making me buy a new $150 lock, the technician took it apart, fixed a bent piece inside, and now it works perfectly."





San Francisco, CA Insights: Population,
Zip Codes, Influence, and Service Areas

San Francisco (/ˌsæn frənˈsɪskoʊ/ SAN frən-SISS-koh; Spanish for 'Saint Francis'), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous city in California, with 808,437 residents, and the 17th most populous city in the United States as of 2022. The city covers a land area of 46.9 square miles (121 square kilometers) at the end of the San Francisco Peninsula, making it the second most densely populated large U.S. city after New York City and the fifth-most densely populated U.S. county, behind only four of the five New York City boroughs. Among the 91 U.S. cities proper with over 250,000 residents, San Francisco was ranked first by per capita income and sixth by aggregate income as of 2021. Colloquial nicknames for San Francisco include Frisco, San Fran, The City, and SF.

Zip Codes in San Francisco, CA that we also serve: 94130 94131 94132 94133 94134 94103 94102 94105 94104 94188 94158 94124 94123 94122 94121 94129 94110 94118 94112 94116 94117 94114 94115 94111 94109 94108 94107 94127 94119 94120 94125 94126 94137 94139 94140 94141 94142 94143 94144 94145 94146 94147 94151 94159 94160 94161 94163 94164 94172 94177





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