Lock change and replacement cost in Bonita, CA.
Last reviewed July 2026 · Swift Key San Diego
A lock change swaps out the physical deadbolt or knob for new hardware, which is the right call when the old lock is worn, damaged, or you want a higher security grade. Cost is driven by the hardware you pick and how many doors you do.
Why lock replacement runs $115 to $280 per door installed in Bonita
Chula Vista and Bonita newer developments already have deadbolts to upgrade, while older National City-adjacent stock sometimes needs a new deadbolt bored into a knob-only door, which adds prep labor.
Bonita homes and what shapes the price here
Bonita calls run three primary patterns. First, residential rekey and smart-lock install across the custom-home stock. Typical scope is three to five cylinders ($100 to $180 all-in for rekey), often paired with smart-lock install on the front door at the same visit ($300 to $500 per door including hardware).
We cover Bonita Village, Sweetwater Valley, Sunnyside, Bonita Long Canyon, Sweetwater Reservoir-adjacent, Otay Lakes-adjacent and the rest of Bonita.
What moves the lock replacement price
- Hardware grade. Grade 3 builder locks are cheapest. ANSI Grade 1 deadbolts and smart-ready hardware cost more but last longer.
- Finish and material. Standard finishes are baseline. Marine-grade stainless or solid brass for coastal air costs more.
- Door prep. A door already bored for a deadbolt installs fast. New bores, old mortise conversions, or repair add labor.
- Door count. Per-door labor drops when several doors are changed and keyed alike in one visit.
If the goal is just controlling who has a key, a rekey is cheaper. Choose a full lock change when the hardware is failing or you want a higher grade.
Bonita cost questions
How much does lock replacement cost in Bonita?
In Bonita (South County San Diego County) expect $115 to $280 per door installed, per door (hardware plus labor). Chula Vista and Bonita newer developments already have deadbolts to upgrade, while older National City-adjacent stock sometimes needs a new deadbolt bored into a knob-only door, which adds prep labor.. We quote a firm price before any work starts, with no mileage upcharge for Bonita.
Why does lock replacement cost more or less in Bonita than elsewhere in the county?
Chula Vista and Bonita newer developments already have deadbolts to upgrade, while older National City-adjacent stock sometimes needs a new deadbolt bored into a knob-only door, which adds prep labor.
Is a quote for lock replacement in Bonita free?
Yes. We give an upfront price over the phone or on arrival before starting, so you know the lock replacement cost for your Bonita home or vehicle with no surprise fees. Call (858) 400-4082.
Do you install Medeco or Mul-T-Lock in Bonita?
Yes. We are authorized dealers for Medeco, Mul-T-Lock, and Abloy restricted-keyway systems, and these are regular work on the higher-end Bonita custom-home stock. Restricted-keyway systems prevent unauthorized key duplication, only an authorized dealer can cut additional keys on signature from the registered keyholder. Typical Bonita estate system runs six to twelve cylinders, project cost $1,800 to $4,500 depending on cylinder count and complexity.
Want the county-wide picture? Read our guide on What a locksmith costs in San Diego.
Where we work in Bonita
Want a firm lock replacement price in Bonita?
Call for an upfront quote. 24/7 mobile service, typical arrival 20 to 40 minutes.