Costs for rekeying, smart lock installation, lockouts, and everything you need to know about hiring a BSIS-licensed residential locksmith in Foster City.
A residential locksmith handles all the lock and key work for single-family homes, condominiums, and apartments in Foster City. The most common jobs fall into three categories: rekeying, lockouts, and hardware upgrades.
Rekeying a lock changes the internal pin configuration so old keys no longer work. The lock body stays in place - only the cylinder (the part the key turns) is reconfigured. This is the standard recommendation when moving into a new Foster City home or after losing a key.
Cost breakdown for Foster City residential rekeying in 2026:
| Service | Typical Cost | Notes |
|---|---|---|
| Service call fee | $50-$75 | Flat trip charge, separate from work |
| Rekeying per cylinder | $60-$100 | Most homes: 2-4 cylinders |
| Full home rekey (4 cylinders) | $290-$475 | Includes service call |
Getting locked out of a Foster City home is stressful. A licensed locksmith uses non-destructive entry techniques to open the door without damaging the lock. Standard residential lockout calls run $85-$150 during business hours. After-hours or weekend calls may add $25-$50.
Avoid any provider quoting under $50 for a lockout - this is nearly always a bait-and-switch tactic where additional charges appear at the door. Real lockout service in San Mateo County starts at $75 minimum.
Smart lock installation is increasingly common in Foster City among the tech-employed residential population. The three main product types are:
For your individual unit or home door, a licensed locksmith is the right call. For common-area building access (lobby, parking garage, mail room), contact your building management or HOA before calling a locksmith - building common areas require authorization from the property owner or manager, not just the tenant.
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All services, costs, BSIS licensing, hiring checklist, and neighborhood coverage in one place.
See the main guide →Use our five-step hiring checklist to verify licensing, get a fair quote, and know what to expect before the technician arrives.
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