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 estimateMedeco Locksmith in Highland Park, TX | Stalwart Locksmith
We provide independent Medeco locksmith service serving Highland Park, TX, from emergency lockouts to full high-security rekeying on vintage estate doors. Most Highland Park Medeco work we handle involves 1920s and 1930s homes where original mortise locks bind seasonally, restricted-key cylinders wear down in pool houses and gates, or new owners need discretion while rekeying hidden outbuildings after a property changes hands. If you need a Medeco locksmith in Highland Park, call (877) 626-0257 and we’ll talk through the repair before anyone is dispatched. We are not a Medeco authorized dealer; we are an independent shop that has worked on Medeco hardware for years. That independence matters, because we recommend what fits your door and your key-control needs, not what a manufacturer program pushes. Russ Thibodeau, our owner, directs every Medeco job in Highland Park personally.

Why Highland Park Residents Choose Us for Medeco Service
Highland Park is not a place where you gamble on a lowest-bid locksmith. The homes here were built when doors were solid wood and hardware was meant to last generations. We understand that a Medeco Maxum deadbolt on a 1938 Tudor needs different treatment than the same deadbolt on a new construction in Frisco. Russ trained through the Tarrant County College vocational program and has spent his career learning the internal pinning of Medeco Biaxial and M3 cylinders, not just swapping out lock bodies. That means when your restricted key starts turning hard in July, we diagnose whether the issue is the cylinder, the mortise body, or the door frame. We stock genuine Medeco OEM cylinders and pins for current systems, and quality aftermarket springs and pins for older Medeco hardware where factory parts have been discontinued. When you call for Medeco sales & service, the person who shows up knows exactly what is in your lock.
Highland Park homeowners also expect a certain level of conduct. We keep work scopes quiet, show up tidy, and protect original door finishes while we work. If the fix can be a re-pin instead of a replacement, that is what we recommend. It is the same approach we would want on our own doors.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Highland Park
Medeco hardware is built to resist drilling and picking, but it still lives in a physical world, and that physical world in Highland Park is full of 90-year-old wood, North Texas humidity, and estate buildings that get used hard. Here is what we see most:
- Binding cylinders in original mortise locks. On 1920s and 1930s solid-wood doors, the wood swells through spring and early summer and shrinks in dry winter air. That movement shifts the mortise body just enough to bind a Medeco cylinder, so the key turns tight or refuses to insert smoothly. We re-time the cylinder, sometimes re-pin it, and adjust the strike plate so the locking bolt throws clean without touching the original door.
- Worn restricted-key cylinders on gates, pool houses, and guest houses. Those outbuildings get direct sun, rain, and temperature swings. Over years, the internals of a restricted Medeco cylinder wear and keys start sticking or won’t pull out in certain positions. We replace the internal springs and pins with OEM-spec parts, preserving the restricted-key control so unauthorized copies still cannot be made.
- Misaligned Medeco deadbolts after humidity cycles. Wood frames in Highland Park move seasonally. A deadbolt that lined up in February may catch or throw short by August. We file and reposition strike plates, or adjust the lock body as needed, rather than telling you to buy a new lock.
- Post-storm door and lock damage. Spring storm season in North Texas bends doors, shifts frames, and sometimes twists bolts inside Medeco deadbolts. After a severe weather event, we realign the hardware and replace bent components. If the storm sheared a screw or cracked a strike plate, we address that too.
- Broken keys or stuck key removal on restricted systems. A Medeco key that snaps off in a gate lock or a back door cylinder is not a quick hardware-store fix. We extract the broken key without trashing the cylinder, then cut and register a new restricted key so the key control stays intact.
Medeco Service in Highland Park: What Local Conditions Mean for Your Equipment
Highland Park sits on a mix of residential lots where the original 1920s through 1940s builds are among the most tightly protected in North Texas, and where properties frequently change hands and get extensively modified. When a home changes hands here, the new owner often doesn’t know how many keyed openings exist. A main house, a detached two-car garage, a pool cabana, a rear guest house, and a set of iron driveway gates might all carry different Medeco restricted-key cylinders or even different keyways. If the prior owner lost track of a key card or a duplicate, some of those cylinders may never be accounted for. That matters for security. We approach every new Highland Park client by mapping every opening on the property, confirming which cylinders are Medeco and which are other hardware, and then recommending a Medeco service in University Park rekey strategy that consolidates the estate onto one controlled system or splits zones deliberately. This is not something we have to do in most Dallas neighborhoods. In a town where estate gates and outbuildings are routinely invisible from the street, a locksmith who does not ask about them leaves the estate exposed. We ask.
In 2023 and 2024, we worked on several Highland Park properties on Beverly Drive and Armstrong Parkway where the outbuildings had their own keyed entries that had not been opened in months. More than one had a Medeco cylinder that had seized from weather and inactivity. The main door worked fine. Had the owner not asked us to walk the property, those secondary access points would have stayed unsecured and unserviceable. On estates where the main house is a $3M-plus rebuild and the original hardware survives only on the outbuildings, preserving those older Medeco cylinders takes real patience.
Medeco Models & Products We Service in Highland Park
We service the Medeco lines we see most in Highland Park: the Maxum deadbolt, Biaxial cylinders, and M3 and M4 restricted-key systems, plus the Medeco KeyMark commercial cylinders used on some estate gates and service entrances. We carry OEM Medeco cylinders, pins, and springs for current models. For older or discontinued Medeco hardware, we keep quality aftermarket springs and pins that match factory tolerances closely enough to keep the lock reliable without breaking the key-control chain. Before we ever recommend replacement, we assess whether your Medeco repair in Dallas lock can be re-pinned, re-sprung, or re-aligned. On a Highland Park home with original hardware, replacement is the last option, not the first.
Medeco Service Pricing in Highland Park
Medeco service pricing in Highland Park typically falls in two bands. A straightforward cylinder service, rekey, or strike adjustment on a Medeco residential lock usually runs from $90 to $180, depending on how many cylinders are involved and whether we are doing the work in an original mortise lock. A full rekey of a larger estate with multiple buildings and restricted key control is more often $250 to $500, driven by the number of openings and whether a new master-key hierarchy is being set up or inherited. Medeco cylinders themselves cost more than standard hardware, which is why high-security work on these models is priced higher than Kwikset or Schlage rekeying. Every quote includes parts, labor, and the call-out fee, and the number we quote you on the phone is the number on your invoice. There is no added surcharge when we arrive. Call (877) 626-0257 for a free estimate before we dispatch anyone.
Serving Highland Park, TX — Our Local Coverage Area
We’re based in the Highland Park 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 – Medeco Locksmith in Highland Park
Can you rekey a Medeco lock without the original key or key card?
Yes, but it depends on the cylinder. If you have a Medeco lock and you’ve lost the original key and the key card, we can often rekey it by disassembling the cylinder, decoding the remaining pins, and cutting a new restricted key from scratch. If the lock is a classic Biaxial or an older system and the cylinder is still intact, we can repin it to a new restricted keyway. If you have no card and no original key on a current M3 or M4 system, you may need to contact the original locksmith who issued the key control, because the keyway and key blank are protected. In Highland Park, we often run into this when an estate changes hands and the key card was lost in the transaction. Call (877) 626-0257 and we can tell you over the phone whether your cylinder is salvageable and what the rekey will cost.
My 1920s Highland Park door has an antique mortise lock with a Medeco cylinder. Can you repair it instead of replacing the whole lock?
Usually, yes. A Medeco cylinder retrofitted into an original mortise lock body from the 1920s or 1930s can be re-pinned, re-sprung, and re-timed without pulling the mortise body out of the door. The lock body itself can often be cleaned and adjusted, and the strike plate realigned when the door frame has shifted. We have repaired Medeco cylinders in original doors on Lexington Avenue, Beverly Drive, and Armstrong Parkway without replacing any of the historic hardware. The only time we recommend a new lock is when the mortise body is cracked or the internal levers are worn beyond adjustment. Call (877) 626-0257 for a free assessment, and we’ll tell you honestly which path your door needs.
How does Highland Park’s climate affect Medeco locks on wood doors?
North Texas swings from humid spring heat to dry winter air, and that cycle makes solid-wood doors swell and shrink. A 90-year-old door on a Highland Park home absorbs enough moisture in late spring that the mortise pocket can close slightly, binding the Medeco cylinder and making the key turn hard. In winter, the same door shrinks and the deadbolt may misalign with the strike plate. We see this pattern every year on older Highland Park doors, and the fix is usually a Medeco service in Richardson cylinder re-pin or re-time plus a strike adjustment, not new hardware. If your Medeco lock is fighting you every June and December, call (877) 626-0257 and we’ll smooth it out.
Do you offer master key systems for large estates with multiple buildings?
Yes. We design and install Medeco M3 and M4 master key systems for Highland Park estates that have a main house, detached garage, pool house, guest house, and gates. A master key system lets you carry one key for the whole property while giving staff or guests a restricted key that opens only certain doors. We handle the full keying chart, the restricted-key ordering, and the cylinder pinning. Medeco master key systems are one of our core sub-services for larger properties, and we keep the key hierarchy documented so expansion or reissue stays clean. Call (877) 626-0257 and we can walk you through the keying options for your property.
What should I do if my Medeco key breaks off in the lock?
Do not try to dig the broken piece out with tweezers or a paperclip. That usually pushes the broken key deeper into the cylinder and turns a simple extraction into a cylinder replacement. Instead, call (877) 626-0257 and we’ll come to your Highland Park property, extract the broken key with proper key extraction tools, check the cylinder for internal damage, and cut you a new restricted key if the code is on file. If no code is on file, we can often decode the cylinder from the remaining pins. Broken Medeco keys happen most often on high-use gate and pool house locks, and the extraction is usually less than an hour.
Service Areas Near Highland Park
We service Highland Park and the surrounding communities, including Dallas directly to the south and west, University Park just across the border, Preston Hollow to the north, and Lovers Lane and the Park Cities neighborhoods throughout. For Medeco service further out, see Medeco service in Carrollton and Medeco service in Roanoke.
Book Your Medeco Service in Highland Park Today
We are ready to help with Medeco locks, restricted-key systems, and estate-wide rekeys in Highland Park, TX. Same-day availability is often possible for urgent lockouts and cylinder failures. Call (877) 626-0257 and Russ will walk you through the scope and a firm price before anyone is dispatched.
Written by Russ Thibodeau, Owner at Stalwart Locksmith, serving Highland Park, TX and surrounding areas.