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 Mill Valley, CA
Rekeying locks is the service Mill Valley homeowners call us for most, and the reasons are written into the houses themselves. The century-old redwood and shingle cottages that climb Miller Avenue and Cascade Canyon come with vintage mortise locks, swollen wood doors, and decades of keys floating around. We rekey those old locks properly, without tearing up the door, and we restore them so they actually latch in the damp months. If you need a locksmith in Mill Valley, call (833) 589-8078 for a free estimate.
Why Mill Valley Homes Are Different
Mill Valley’s housing stock is not like the rest of Marin. Most homes were built between the early 1900s and the 1960s, many of them redwood-sided cottages and shingle-style bungalows set into hillside lots. The doors on these houses have been swelling and shrinking with the seasons for fifty to a hundred years. In wet winters, the wood absorbs moisture from the redwood canopy and presses hard against the jamb. In dry summers, the gap opens up and the latch no longer reaches the strike plate. Locks misalign with every season, and the homeowner winds up kicking, shoulder-bumping, or calling a locksmith.
Up in the canyon neighborhoods like Cascade and Warner, the situation is heavier. Homes sit behind dense redwood shade with no street sightlines, which makes door and gate security serious business. But the hardware on those doors is usually an original mortise lock from the same era as the house. A locksmith who only installs modern deadbolts is not the right fit. These doors need someone who restores vintage hardware, repacks the mortise body, and rekeys what is already there so it works in February as well as it works in August. Citadel Locksmith has served Mill Valley since 2011.
Styles & brands we work with







Our Main Mill Valley Services
Homeowners and renters across the 94941 and 94942 ZIP codes call us for two things more than anything else: car key replacement and emergency lockout help.
Car Key Replacement in Mill Valley
Losing a car key in Mill Valley usually means standing on a quiet canyon road with no spare in sight. We cut and program replacement keys, transponder keys, and remotes for most makes and models, usually at a fraction of what the dealership charges. The damp air and hillside driveways do not help a dead key fob, but most jobs are handled on the spot. Car Key Replacement in Mill Valley covers the makes, the keys, and what to expect.

Emergency Locksmith in Mill Valley
A lockout at midnight in Mill Valley is not a small thing. The streets are dark, the fog settles in, and the houses are often the only light for blocks. We respond to home, car, and business lockouts across Mill Valley, and our work vehicle carries the tools and cylinders to rekey or repair the lock once we get you inside. Emergency Locksmith in Mill Valley explains how fast we can get to your part of town and what happens when we arrive.

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 Mill Valley
Rekeying a lock in Mill Valley is almost never a simple cylinder swap. The doors here are old, the frames have moved, and the mortise locks predate the modern keyway. We rekey what is already on the door, after we make sure the door actually closes and the latch throws cleanly. That is the Mill Valley difference: a rekey here often includes a small amount of hardware restoration because the lock cannot hold security until the door aligns. Our Rekey Locks service covers the full process, from evaluation to finished key set.
Lock Rekey
Signs you need it
You bought a Mill Valley home and have no idea how many relatives, contractors, or past renters still hold copies of the keys, or you lost a key and would rather not replace every lock on the house.
What it costs in Mill Valley
Rekeying a standard door lock in Mill Valley typically ranges from $75 to $150 when the cylinder is in good shape, excluding parts and any service call fee.
How we do it
We remove the cylinder, replace the internal pins to match a new key, and reinstall it with fresh lubrication so the key turns smoothly even on a damp hill door.
Rekey Door Lock
Signs you need it
A roommate, tenant, or house cleaner moved out and you can no longer account for every copy of the key that ever worked your front door.
What it costs in Mill Valley
Rekeying a single door lock in Mill Valley usually runs $75 to $150, with a higher end when the existing cylinder is corroded or the mortise body needs servicing.
How we do it
We take the old keyway apart, fit new pins to a fresh key, and then realign the strike plate so the rekeyed lock actually latches shut on a door that has swelled an eighth inch since 1950.
What Rekey Locks Costs in Mill Valley
| Item | Typical range in Mill Valley |
|---|---|
| Rekey standard door lock | $75 – $150 |
| Rekey second lock on same property | $60 – $120 |
| Labor for mortise lock rehab + rekey | $180 – $340 |
What pushes the price up in Mill Valley is the door. If a redwood cottage door has swelled or settled out of square, the lock body itself may need to be pulled, cleaned, and shimmed before the new pins go in. That takes time, but skipping it means the rekeyed lock will jam in the next rain. We quote the full price on the phone before anyone is dispatched, and that is the price on the invoice. No surprises at the door.
How long does a rekey take in Mill Valley?
Most residential rekeys on Mill Valley properties take 20 to 40 minutes per door. Vintage mortise locks take longer because we disassemble and repack the lock body, not just the cylinder. Call (833) 589-8078 for a time estimate on your exact door.
Can you rekey a century-old mortise lock without replacing the door?
Yes. That is most of what we do in Mill Valley. We preserve the original mortise body, fit new pins to a fresh key, and repair the internal springs and levers so the old hardware keeps working. Call (833) 589-8078 if your cottage still has its original front door lock.
Brands We Service in Mill Valley
The locks on Mill Valley doors run from the original Yale mortise locks to modern Kwikset and Baldwin handlesets. We carry parts for Medeco cylinders as well, and we can rekey most of these on the first visit. See our brands for the full list.
Pricing for Locksmith in Mill Valley, CA
| Service | Typical range in Mill Valley |
|---|---|
| Lock rekey (standard cylinder) | $75 – $150 |
| Rekey second lock on same job | $60 – $120 |
| Mortise lock rehab + rekey | $180 – $340 |
| Car key replacement (basic, non-transponder) | $120 – $250 |
| Transponder key or fob programming | $150 – $350 |
| Emergency lockout (home or car) | $90 – $180 |
| Deadbolt replacement (labor only, parts extra) | $100 – $220 |
| Exterior lockset replacement (labor only, parts extra) | $120 – $260 |
Two things push Mill Valley prices higher than flatland Marin towns. First, the age of the locks: original mortise bodies need more disassembly and care than a modern cylindrical lock. Second, the doors themselves, which are often warped or swollen and need alignment work before any new cylinder or key set will function. We stand by our upfront pricing: the figure we quote on the phone is the figure on the invoice. No dispatch fee added when the van arrives.
Neighborhoods We Serve in Mill Valley
Our techs work all over Mill Valley, from the flats near downtown to the ridge roads and canyon switchbacks. Here are a few of the areas we are in regularly:
- Cascade Canyon and Cascade Drive
- Warner Canyon and Warner Court
- Miller Avenue corridor
- Sycamore Park and Tamalpais Park
- Homestead Valley and Scott Valley
We aim to be anywhere in the 94941 and 94942 ZIP codes within the hour when it is an emergency, and same day for most scheduled rekeys and car key jobs.
Service Area – Cities Near Mill Valley
Citadel Locksmith serves the whole south and central Marin corridor. Homeowners just over the border call us for the same brand of milled redwood door and creaky mortise lock work as well. We respond regularly to Tamalpais Valley, CA, Tamalpais-Homestead Valley, CA, Corte Madera, CA, and Larkspur, CA for rekeys, lockouts, and car key replacement.
Serving Mill Valley, CA — Our Local Coverage Area
We’re based in the Mill Valley 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 Mill Valley
For emergencies, we typically arrive within an hour in the 94941 and 94942 ZIP codes, though canyon roads and evening fog can stretch that. Scheduled rekeys and car key replacements are booked for the same day in most cases. Call (833) 589-8078 and we will give you a real arrival window for your street.
For most single-family homes, no permit or HOA approval is needed to rekey a lock or install a new deadbolt. Some historic or planned communities have design rules on exterior hardware finishes, so we can match the existing trim style if that is a concern. The lock itself stays within the same footprint.
Yes. You get the full cost of the job before any truck is dispatched, and that is the number on the invoice. If we find the door itself needs alignment work, we explain the added cost on site and get your approval before touching anything. No call-out surcharge is added when we arrive.
Call Citadel Locksmith at (833) 589-8078 for a free estimate on rekeying, car key replacement, or emergency locksmith service in Mill Valley. We know the old doors, the damp locks, and the canyon roads here.
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 Mill Valley Customers Say
"Told me over the phone that what I needed was a five dollar part from the hardware store, not a locksmith. I called him back a month later for real work because of that."
— Yolanda Mendoza"Key snapped off in the deadbolt. He extracted it without damaging the cylinder, which I did not think was going to be possible."
— Oscar Reyes"The old deadbolt was mounted crooked by whoever lived here before and had been sticking for years. He redrilled and reset it properly rather than just replacing the hardware."
— Brandon Wong