Smart locks
House lockouts
Re-keying
Deadbolt upgrades
Schlage
Kwikset
Car keys & fobsNon-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Get your free estimateLocksmith in Monrovia, CA
Most Monrovia lock work comes down to one question: can the existing hardware be saved or does it need replacing? In a city where 1920s mortise locks sit alongside modern smart deadbolts, rekeying is usually the right answer. True Blue Locksmith has served Monrovia since 2017, and we’ve rekeyed everything from original Craftsman bungalow hardware near Myrtle Avenue to mid-century tract homes in the northern hills. Call (877) 358-5506 for an honest quote before anyone rolls a truck.
Why Monrovia Homes Are Different
Monrovia’s housing stock splits sharply by era, and that changes what a rekey actually involves. The Old Town historic district holds turn-of-the-century Craftsman bungalows and Victorian-era homes, many with original mortise locks and skeleton-key entries still in place. Those locks were built to be serviced, not thrown away, and rekeying them means working with brass internals and worn springs that big-box replacement locks simply don’t match.
Drive north toward the foothills and the picture flips. Hillside and mid-century tract homes in the 91016 and 91017 ZIP codes tend to run standard deadbolts and Kwikset or Schlage cylinders, but the dry air and hot Santa Ana winds do their own damage. Oxidation builds up inside exterior cylinders, keys get stiff, and neglected fittings corrode faster than homeowners expect. Wildfire-season pressure also pushes people toward fire-resistant hardware and reinforced entry doors, which often means rekeying newly installed locksets to a single working key.
On the streets off Myrtle Avenue, preservation-minded homeowners frequently need rekeys that keep the original exterior trim intact while bringing the keying up to modern standards. That is a different job than swapping a handle set at a tract home, and it’s one we handle regularly.
Styles & brands we work with







Our Main Monrovia Services
Two services generate most of the calls we field from Monrovia residents: car key replacement and emergency lockouts. Each has its own dedicated page with pricing, timelines, and local details.
Car Key Replacement in Monrovia
Losing a car key in Monrovia often means standing in a driveway off Foothill Boulevard with no spare and no way to move the vehicle. We cut and program replacement keys for most makes, including transponder and push-to-start systems, without needing a tow to the dealership. The dry foothill heat is hard on key fob batteries and worn ignition cylinders, and we carry the equipment to test and replace both on-site. Car Key Replacement in Monrovia covers the full process and what your specific vehicle will need.

Emergency Locksmith in Monrovia
Lockouts in Monrovia happen at odd hours, often when someone runs out to the curb on a Santa Ana evening and the door swings shut behind them. We respond to home and car lockouts across both Monrovia ZIP codes, with the tools to open most residential locks without destroying the hardware. Emergency Locksmith in Monrovia explains response expectations and what information helps us get to you faster.

What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Rekey Locks in Monrovia

Rekeying in Monrovia usually means one of two things: a homeowner just moved in and doesn’t know who still holds a key, or a historic home’s original lock is worth keeping but the keying needs to change. The dry foothill air also stiffens older cylinders over time, so rekeying often doubles as a chance to clean and lubricate internals that have been binding for years. Whether it’s a Craftsman bungalow near Old Town or a hillside tract home, rekeying keeps the hardware you have while giving you a fresh start. Our full Rekey Locks service page covers the range of what we handle.
Lock Rekey
Signs you need it
You’ve moved into a new home in Monrovia and can’t account for every key that was handed out before you closed.
What it costs in Monrovia
In Monrovia, a standard lock rekey typically runs $40 – $100 per cylinder depending on brand and lock type.
How we do it
We remove the cylinder, swap the internal pins to match a new key, and reinstall it so the original hardware stays in place.
Rekey Door Lock
Signs you need it
Your door lock turns with a key that’s worn, stiff, or inconsistent, and the cylinder hasn’t been serviced in years of Monrovia’s dry heat.
What it costs in Monrovia
Rekeying a door lock generally falls between $40 and $100 per cylinder, with high-security brands running higher.
How we do it
We disassemble the lock, clean the cylinder, install new pins matched to a fresh key, and test the action before we leave.
Keyed Alike
Signs you need it
You’re carrying three different keys for the front door, back door, and side gate and you want one key working everything.
What it costs in Monrovia
Keyed-alike service in Monrovia typically costs $15 – $30 per cylinder when rekeying multiple locks in one visit.
How we do it
We pin each cylinder to match a single key, so one key operates every lock you designate, and we test each one individually.
What Rekey Locks Costs in Monrovia
| Item | Typical range in Monrovia |
|---|---|
| Standard lock rekey (per cylinder) | $40 – $100 |
| Rekey door lock (per cylinder) | $40 – $100 |
| Keyed alike (per cylinder, multi-lock visit) | $15 – $30 |
How long does a rekey take in Monrovia?
Most Monrovia rekeys take 20 to 40 minutes for a typical front and back door, with keyed-alike work on multiple cylinders running a little longer. Call (877) 358-5506 for a time estimate on your specific locks.
Do I need to replace my old locks or can they be rekeyed?
Most original Monrovia hardware, including 1920s mortise locks, can be rekeyed if the cylinder is intact. We’ll tell you if a lock is too worn to salvage before we do any work. Call (877) 358-5506 for an honest assessment.
Brands We Service in Monrovia
We rekey and service Kwikset, Medeco, Yale, and Baldwin hardware throughout Monrovia, from entry-level cylinders to high-security systems. Our techs carry common pins, springs, and parts for these brands, so most rekeys finish in one visit. See our brands for the full list of what we work on.
Pricing for Locksmith in Monrovia, CA
| Service | Typical range in Monrovia |
|---|---|
| Rekey (per cylinder) | $40 – $100 |
| Rekey door lock (per cylinder) | $40 – $100 |
| Keyed alike (per cylinder, multi-lock) | $15 – $30 |
| Car key replacement | $150 – $350 |
| Emergency lockout | $75 – $180 |
| Commercial rekey (per cylinder) | $50 – $110 |
| High-security rekey (Medeco, Mul-T-Lock) | $90 – $180 |
| Mailbox lock replacement | $35 – $75 |
Prices in Monrovia shift with the age of the hardware: a rekey on a 1920s mortise lock takes longer than a modern deadbolt, and high-security brands like Medeco or Mul-T-Lock require proprietary pins that cost more. Whatever the job, the full price is quoted on the phone before we dispatch anyone, and that is the price on the invoice. No call-out surcharge added at the door.
Neighborhoods We Serve in Monrovia
We cover both Monrovia ZIP codes, from the Old Town historic district up through the hillside streets near the San Gabriel foothills. The neighborhoods below represent where we work most often.
- Old Town Monrovia
- North Monrovia foothills
- Mayflower corridor
- East Monrovia
- Wildrose Canyon area
Response times across Monrovia are generally under an hour for emergency calls, though foothill addresses with narrow access roads can add a few minutes.
Service Area – Cities Near Monrovia
True Blue Locksmith also covers the communities that border Monrovia. If you’re in Mayflower Village, CA, Duarte, CA, Bradbury, CA, or Arcadia, CA, we can handle rekeys, lockouts, and key replacement with the same upfront pricing. Call (877) 358-5506 and we’ll tell you exactly when a tech can reach your address.
Serving Monrovia, CA — Our Local Coverage Area
We’re based in the Monrovia area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Locksmith in Monrovia
Yes. We cover 91016 and 91017 regularly, including the Old Town district and the foothill neighborhoods. If you’re not sure which ZIP you’re in, give us the nearest cross street when you call and we’ll confirm coverage immediately.
No. Racking a rekey only changes the pins inside the cylinder, so the exterior trim, escutcheon plates, and original mortise body stay exactly as they are. We’ve rekeyed many Monrovia bungalows where preservation was a condition of the work.
Rekeying is an interior hardware change and doesn’t require a permit anywhere in Monrovia. Some historic district HOAs have guidelines for replacing street-facing hardware, but changing the keying on an existing lock is not a modification they regulate.
What happens when you call
- 1A real person answersNo phone trees — talk to a local locksmith pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Monrovia Customers Say
"Locked out at eleven at night with a kid asleep in the car. He was there in 25 minutes, had the door open in under two, and did not do the thing where the price goes up once he's standing in front of you."
— Yolanda Vargas"Quoted a price on the phone and honored it. After the last locksmith I called, that alone is worth a review."
— Megan Whitaker"Got me back in and the price was fair for the hour. He did arrive closer to 45 minutes than the 20 he estimated, which felt long standing outside, but he was honest that traffic was the problem."
— Chris Meyer