Non-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.
Fast, Reliable Residential Locksmith Across San Marino
Residential locksmith service in San Marino typically runs $95 – $420 depending on whether we’re rekeying an original mortise cylinder, cutting new keys for a skeleton-key deadbolt, or opening you back into a 1920s Spanish Colonial after a lockout. Most calls in San Marino are completed same-day, and we answer the phone with a live person around the clock. If you’re locked out, need a lock change, or your original mortise hardware has stopped throwing clean, call (910) 714-4287 and we’ll give you a written price before anyone is dispatched.
San Marino is not a city where you gamble on who shows up. Nearly every home here is a Period Revival estate from the 1920s through the 1950s, and the door hardware is original in most of them. That changes what a locksmith actually does on a daily basis: less swapping knobs, more preserving millwork, adjusting strikes, and fitting modern high-security cylinders into mortise preparations that predate the cylinders by half a century.
Why Dunmore Locksmith Is San Marino’s Preferred Residential Locksmith Company
Dunmore Locksmith has served the residential locksmith needs of San Marino homeowners since 2007 as part of the Threshold Group family of independent local locksmith businesses. Dunmore comes from old words for a great fort, a stronghold built to keep what is inside safe. That’s the standard we hold ourselves to here. Our Residential Locksmith team knows what a 1930s mortise lock requires, and we don’t send a generic tech who’ll reach for a cylindrical deadbolt that doesn’t belong in your door.
Every technician we send into San Marino is background-checked, identity-verified, and arrives in a clean marked uniform carrying a photo ID badge. Before the visit, you get the technician’s name and photo by text, so you know exactly who is at your door before you open it. That’s what we call the Threshold Standard, and it matters more in a city where residents are rightly cautious about strangers on their property.
Our San Marino customers consistently tell us the same things: the written price matched the invoice, the tech didn’t push a replacement when a rekey would do, and the door worked better when we left than when we arrived. Perry Osgood, who leads Dunmore Locksmith, personally reviews the written guarantees we attach to every San Marino job. A repair either holds for a full year, or we come back at no charge under the 365-Day Done Right Promise. That’s a written commitment, not a phone script.
House Key Locksmith in San Marino
House key locksmith work in San Marino usually means rekeying the original mortise cylinders and skeleton-key deadbolts on doors built before World War II, and a typical rekey on one of these lock sets runs $95 – $190. Rekeying (changing the internal pins so your old keys no longer work) makes more sense than replacement for most San Marino hardware, because the original faceplates and ornamental escutcheons cannot be matched at a hardware store. The pins inside are standard; the brass and millwork around them are not.
Mortise Cylinder Rekeying
On a 1920s or 1930s door, the threaded mortise cylinder can almost always be rekeyed in place without touching the faceplate or the original wood. We pull the cylinder, swap the pins, and cut new keys on the spot. If you bought a home and don’t know who still holds a key, rekeying every exterior cylinder the same day is the single most important security step you can take in San Marino.
Skeleton-Key Deadbolt Conversion
Some San Marino homes still run on bit-and-barrel skeleton keys, and those cannot be rekeyed into modern key control. What we can usually do is fit a Schlage or Medeco cylinder into the existing mortise preparation while keeping the original faceplate and trim. That gives you real key control and the ability to get duplicate keys, without cutting out the historic hardware.
House Lockout in San Marino
A house lockout in San Marino usually runs $95 – $180, and the most common call we get is a homeowner who stepped into the motor court or side garden and found the original mortise latch had locked behind them. On a lot of these older doors, the latch is original and the strike has shifted slightly with the wood, so the door that felt loose is now firmly closed. We get to San Marino quickly, and we don’t drill a door if the lock can be picked or bypassed without damage. The price is set before we start, and there’s no added call-out fee when the tech arrives.
Non-Destructive Entry First
We always try picking or bypassing the lock before any drilling, especially on San Marino doors where replacement hardware would mean visible patches on historic wood. If the lock does need to be drilled, we go in clean and replace it with hardware that matches the door’s period and finish.
After the Lockout
Once you’re back inside, we’ll check why the lockout happened, whether that’s a failing latch, a shifted strike, or a deadbolt that was never throwing correctly. Most homeowners ask us to rekey on the spot, which we can do for the price already quoted on the phone.
Trusted Brands We Service in San Marino
We install and service Schlage, Kwikset, Medeco, and Abloy hardware, and we stock common parts locally so San Marino customers aren’t waiting on a parts shipment. For older homes, Medeco and Schlage mortise cylinders are the two we fit most often, because they give high-security key control without changing the door’s exterior appearance. If a mortise lock body is genuinely worn out, we replace it with a Baldwin or Schlage mortise unit that sits in the same preparation and takes the original trim.
Common Residential Locksmith Problems We See in San Marino Homes
- Seasonal deadbolt binding. San Marino door frames are often old-growth Douglas fir, and after the dry San Gabriel Valley summers plus the fall Santa Ana winds, the wood shrinks and racks. A deadbolt that won’t throw is usually the frame and strike, not the lock, and the fix is strike adjustment plus, sometimes, a slight redrilling of the bolt pocket.
- Wrong hardware replacements. Dropping a modern cylindrical deadbolt into a door that had an original mortise lock means cutting out historic wood and leaving a visible patch. We see this in homes that used a big-box handyman for a past repair, and we’re often asked to undo it and restore a mortise lock the door was built for.
- Multiple keys for one property. On a multi-door estate, different locks installed in different decades often run on different keyways, so the owner carries three keys. We can key nearly every mortise cylinder on a property into one Medeco or Schlage keyway and cut a single key that works everything.
- Aging motor court gates. San Marino has a high number of private motor courts with wrought-iron gates from the 1980s and 1990s, often integrated with early intercom systems. When the gate hardware or access control fails, the fix usually means modernizing the access system without altering the ironwork the city’s design standards effectively require.
Pricing for Residential Locksmith in San Marino, CA
Here are the ranges we quote over the phone for San Marino residential work. A standard mortise cylinder rekey runs $95 – $190. A house lockout is $95 – $180. Deadbolt installation with new hardware runs $150 – $320 depending on whether it’s a mortise retrofit or a supplementary deadbolt. Window lock work is $60 – $140 per window. Door reinforcement, including strike plates and hinge screws, is $90 – $250. The price you get on the phone is the price on the invoice, written before anyone is dispatched. There is no call-out surcharge added when the tech arrives, and every repair is covered by the 365-Day Done Right Promise. Call (910) 714-4287 for a free estimate specific to your door.
We Also Serve Cities Near San Marino
Dunmore Locksmith serves San Marino as our anchor community, and we also run calls in San Gabriel, Alhambra, Pasadena, and South Pasadena. If you live just over the border on Huntington Drive or near Mission Street, the same written pricing and Threshold Standard apply. Our dispatchers coordinate from the brand’s Los Angeles office, and crews serve San Marino locally throughout the day and night.
Serving San Marino, CA - Our Local Coverage Area
We’re based in the San Marino 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 Residential Locksmith in San Marino
In most cases we can rekey the original mortise cylinder without replacing anything, and the skeleton-key deadbolt can usually be converted to a Schlage or Medeco cylinder that fits inside the existing preparation while the original faceplate stays. Replacement is only needed when the lock body itself is worn beyond adjustment. Call (910) 714-4287 and describe your door; we’ll tell you honestly which side of the line you’re on.
Your deadbolt is binding because the door frame’s solid old-growth wood has dried, shrunk, and racked after the hot summer, and the Santa Ana winds are moving the frame by a fraction of an inch. The fix is adjusting the strike and the bolt pocket on the frame, not replacing the lock. We do this in San Marino every fall.
Yes. We regularly fit Medeco and Mul-T-Lock high-security cylinders into mortise preparations from the 1920s through the 1950s without cutting or patching the original wood. The cylinder threads into the existing mortise lock body, and the period faceplate and trim stay exactly where they are.
Most San Marino lockouts are a homeowner locked out of a side door or motor court entry by an original mortise latch that locked behind them. We arrive, get you back in without drilling when possible, and then check why the door locked, which often means a slight strike adjustment so it doesn’t happen again. Expect $95 – $180 for the job.
We do, and we’re careful about it. On a door with original mortise hardware, adding a smart lock or keypad usually works best as a supplementary deadbolt above the existing mortise lock, rather than trying to force smart hardware into the original preparation. That preserves the door’s appearance and keeps the original hardware functional.
Call (910) 714-4287 for a free residential locksmith estimate in San Marino. A live person answers, the price is written before anyone is dispatched, and the tech who arrives will be someone you already know by name and photo.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving San Marino since 2007.






