Treasure Coast Locksmith provides lock replacement services in Port St. Lucie, Stuart, Fort Pierce, Vero Beach, Jensen Beach, and across the Treasure Coast. Call (772) 758-1322 for mobile service. Lock replacement is a full hardware swap - new cylinder, new body, new strike. Best when existing hardware is too worn to rebuild, corroded beyond repair, or upgrading to a higher grade. $165-$425 per lock installed depending on brand and security grade.
Lock replacement means pulling the existing lock body, handle, strike, and all associated hardware, and installing complete new hardware in its place. It is the most thorough residential security upgrade short of replacing the door itself.
Most replacement calls come from one of three scenarios. One - the existing hardware is worn beyond repair, usually 15 years old or older and suffering from coastal corrosion or mechanical failure. Two - the homeowner is upgrading from builder-grade Grade 3 to Grade 1 for meaningful security improvement.
Three - the homeowner lost keys and wants a complete reset rather than a rekey.
Treasure Coast Locksmith handles all three. We stock every major brand in every common finish, verify door prep before dispatching, and include strike plate upgrades with 3-inch framing screws on every replacement.
Why replace instead of rekey or rebuild
- Fresh mechanical life - new cylinder gets 10-25 years of expected service.
- Security grade upgrade - good time to jump from Grade 3 to Grade 1.
- Finish refresh - new hardware, no corrosion, no patina from age.
- Strike plate upgrade included - 3-inch screws into framing stud.
- Modernization option - add a smart lock while you're at it.
- HOA compliance reset - if finishes changed, new hardware matches current spec.
- Warranty reset - fresh manufacturer warranty on all new hardware.
- Peace of mind - all keys in circulation are fresh and controlled.
When replacement is the right call
Rekey first, rebuild second, replace third - but sometimes replacement is the correct first call.
Situations that call for full replacement
- Beachfront home in Hutchinson Island has 15-year-old hardware that is corroded internally. Rebuild would fail within months.
- A Port St. Lucie home is selling, new owners want all new hardware for peace of mind. Rekey won't give the feel they want.
- Tradition homeowner upgrading from Grade 3 builder-installed hardware to Grade 1 Schlage for real security improvement.
- Break-in at a Stuart home damaged the deadbolt body itself (not just the strike). Body replacement required.
- Old Kwikset SmartKey was compromised and owner wants a different brand for peace of mind. Replace with Schlage.
- Jensen Beach condo needs all new HOA-approved finish hardware matching updated association standards.
- Back door deadbolt in Vero Beach is bent from a pry attempt and will not rekey correctly. Replacement with reinforcement.
- Homeowner wants to add a smart lock feature that requires full hardware swap from the existing traditional deadbolt.
How lock replacement differs from installation and rekeying
Three related services get confused: installation, rekeying, and replacement. Installation is putting a lock where none existed before (first-time install). Rekeying is swapping the pin tumblers inside an existing cylinder to match a new key (no new hardware).
Replacement is removing existing hardware and installing new hardware in its place.
The cost structure reflects the difference. Rekeying is cheapest at $25 per cylinder because only the pins change. Installation is next at about $105-$155 labor plus hardware because new parts are being fitted into a prepped door.
Replacement is similar to installation in labor cost but typically requires more time because the old hardware has to come out first - which can be straightforward or surprisingly difficult depending on how the previous installer did the job.
The decision matrix is straightforward. If the existing hardware is in good condition and you just need to disable old keys, rekey. If the existing hardware is worn but repairable, rebuild.
If the existing hardware is beyond repair, if you are upgrading grade, or if you specifically want fresh hardware, replace.
For coastal Treasure Coast homes we often recommend replacement over rebuild because the zinc-alloy interior parts corrode invisibly even when the outside still looks acceptable. A 10-year-old lock on a beachfront Jensen Beach home is probably 70% degraded internally even if it operates smoothly. Replacement with PVD-coated hardware resets the clock and extends service life 5-10 years.
How a lock replacement call works
Phone call and brand selection
Call (772) 758-1322. We discuss the doors, the grade you want, and any HOA finish requirements.
Onsite removal
Technician removes the existing hardware carefully, preserving the door prep for the new install.
Install and reinforce
New hardware installed with strike plate reinforcement and door reinforcement plate where needed.
Test and handoff
Full operation test. Two new keys provided (matched across all exterior locks if desired). Written warranty.
Lock replacement tips
- Upgrade from Grade 3 to Grade 1 during replacement. The cost delta is small and the security improvement is meaningful.
- Spec a reinforced strike plate and door reinforcement plate as part of the replacement package. They often get skipped.
- On coastal replacement jobs, go PVD or solid brass. Standard zinc on a new lock will just corrode all over again.
- Match exterior doors to one key during replacement. It costs nothing extra and simplifies daily life.
- Replace the smart lock battery if you're doing a smart lock replacement. Fresh batteries extend first-year reliability.
- Photograph the existing hardware before replacement for warranty and HOA records. Keeps paperwork clean.
Related services
Other Treasure Coast Locksmith services in this cluster.
Lock replacement FAQs
Common questions from Treasure Coast homeowners deciding between rekey, repair, and full replacement.
How much does full lock replacement cost in Port St. Lucie?
A single Grade 1 deadbolt replacement runs $165 to $265 total. Full handle set plus deadbolt runs $255 to $395. Upgrading to Medeco or Mul-T-Lock restricted keyway runs $345 to $595 per lock.
Full-house replacement (4-6 doors) typically runs $850 to $1,850 depending on brand and finish.
Should I rekey, repair, or replace?
Rekey if the hardware is good and you just need new keys ($25/cylinder). Repair if the hardware is worn but fixable ($85-$145 per lock). Replace if the hardware is beyond repair, corroded, or you are upgrading grade ($165-$425 per lock).
We give honest recommendations onsite and document the reasoning.
How long does lock replacement take?
A single deadbolt replacement takes 30-60 minutes including old hardware removal, new installation, strike plate upgrade, and operation test. A full handle set plus deadbolt takes 60-90 minutes. A whole-house replacement (4-6 doors) typically runs 2.5 to 4 hours depending on door count and access.
Will replacing the locks affect my HOA compliance?
Only if you choose a non-compliant finish. Most Treasure Coast HOAs specify brand and finish. Tell us the HOA when you call and we'll confirm the approved hardware list before dispatch.
We stock the common HOA-approved brands and finishes, including Schlage PVD, Baldwin Estate, Kwikset Signature, and Emtek.
Can I upgrade from Kwikset to Schlage during replacement?
Yes. Brand changes are common during replacement. Schlage uses a slightly different cross-bore and latch dimension than Kwikset but both fit standard residential doors.
We bring the correct latch and strike for the new brand. The door prep adjustment takes about 5 extra minutes per door.
Do you replace smart locks too?
Yes. Smart lock replacement includes removing the old smart lock, installing the new one, pairing with Wi-Fi, setting up the app, provisioning user codes, and verifying the mechanical backup cylinder. Cross-brand replacements (Kwikset Halo to Schlage Encode, for example) are routine.
What brands do you recommend for coastal homes?
Schlage B660P in PVD Life Satin Brass, Baldwin Estate in solid brass, and Medeco Maxum in satin brass finish. All three pass 1,000+ hour ASTM B117 salt spray testing and deliver 5-10 years of service on oceanfront Treasure Coast homes before needing replacement again.
Can you replace just the cylinder, not the whole deadbolt?
Yes. Cylinder-only replacement is a common cost-saving option when the deadbolt body is still in good condition but the cylinder is worn or compromised. Cylinder replacement runs $65 to $125 per cylinder installed, versus $165+ for a full deadbolt replacement.
Do you match my existing interior finish (door knobs, hinges)?
Yes. We stock Schlage, Kwikset, Baldwin, and Emtek in every major finish. Satin nickel, polished brass, oil-rubbed bronze, PVD Life Satin Brass, matte black, aged bronze, and polished chrome are all in stock.
Unusual finishes can be ordered within 2-5 business days.
Will the old keys still work after replacement?
No. A full replacement gives you completely new keys that do not work the old cylinders (which are now removed). This is one of the reasons to replace instead of rekey - total reset of all keys in circulation.
If you want to keep using your old key pattern, ask about rekeying the new cylinders to match.
Can you dispose of the old hardware?
Yes. We take old hardware with us and dispose of it responsibly. If you want to keep specific pieces (decorative trim, antique hardware) we leave those for you.
Most homeowners prefer we haul away the old hardware since it's usually beyond reuse by the time replacement is needed.
What if my door is too damaged to accept new hardware?
We assess the door during the onsite visit. If the door prep is damaged from a previous bad install or a forced entry attempt, we can sometimes shim and repair the door to accept new hardware. Severe damage (split door faces, destroyed edges) may require door replacement, which we can refer to a carpenter.