Rekeying & Door Knob Locks
When you move into a new home off Wurzbach Road, take over a business suite on the Northwest Side, or simply lose track of who has copies of your keys, rekeying your existing locks is one of the smartest security decisions you can make — and it costs far less than a full hardware replacement. Trusted San Antonio Locksmith sends trained, insured technicians directly to your door, 24 hours a day, 7 days a week, so you never have to wait for a scheduled appointment or haul hardware across town to a shop.
Open 24 hours, 7 days a week · Licensed, bonded & insured
Whether your concern is a worn-out door knob lock that no longer turns smoothly, a mortise lock that needs a full overhaul, or an upgrade to a keypad lock door knob that fits a modern lifestyle, our mobile team handles it all on-site and damage-free wherever the hardware allows. We serve homeowners, landlords, and business owners across San Antonio — from Alamo Heights and Stone Oak to the South Side and downtown — and we confirm an exact up-front price before a single tool comes out of the bag.
What we do
Available 24/7
Day, night, weekends and holidays — a real local locksmith answers and rolls a fully-stocked van.
Fast local response
Based in San Antonio, we reach the San Antonio area in well under an hour.
Insured & background-checked
Vetted technicians, up-front pricing, and no surprise add-ons when we arrive.
Damage-free entry
We pick and bypass locks the right way, so most lockouts are solved without drilling anything.
Rekeying Door Knob Locks and Deadbolts: What It Is and Why It Matters
Rekeying changes the internal pin configuration of your existing lock cylinder so that old keys no longer work and a fresh key is cut to match the new setup. If you have just purchased a home near the Pearl District, ended a lease, let go of an employee with building access, or experienced any situation where unknown copies of your key may be circulating, rekeying is the fastest and most cost-effective way to restore full control over who can enter. Our technicians work with standard pin-tumbler cylinders found in most residential knob sets and deadbolts, as well as the more complex mortise lock mechanisms common in older San Antonio homes and commercial storefronts. A mortise lock — the type that slides into a deep rectangular pocket cut into the door edge — requires a different rekeying process than a surface-mounted knob, and our team carries the tooling and replacement pinning kits for both.
A single appointment can rekey every lock in a home or office to one master key, eliminating the need to carry a ring full of keys. We also rekey to a restricted keyway system for commercial clients who need tighter key-control, preventing unauthorized duplication at hardware stores. After rekeying, we test the new key in every cylinder before we leave, confirm the door and frame alignment have not shifted, and walk you through the new key operation — a detail that matters in San Antonio's humid summers, when wood frames can swell and create false binding that looks like a lock problem but is actually a door problem.
Door Knob Lock Installation, Repair, and Hardware Upgrades
Not every door knob lock issue calls for a full replacement, and not every homeowner knows which problem they actually have. A knob that spins freely without retracting the latch is usually a broken spindle or cam — a repair, not a new unit. A knob that feels stiff every August is likely reacting to humidity and needs lubrication and possibly a strike-plate adjustment. But when the lock is visibly damaged, heavily worn, or simply the wrong grade for the exposure it faces — an interior-grade knob on an exterior door, for example — our technicians will recommend and install appropriate hardware on the spot. We stock and install a range of brands including Schlage and Kwikset, and we can match finish grades so a new knob does not look out of place against existing hardware.
For homeowners who want more control without changing their door entirely, we also install smart lock door knob conversions and keypad lock door knob units that retrofit onto most standard prep holes. These options are popular in San Antonio's short-term rental market along the River Walk corridor and in neighborhoods like Terrell Hills, where property owners want to issue time-limited codes to guests rather than managing physical keys. We walk you through pairing, app setup, and backup key options before we leave — because a smart lock you cannot operate confidently is not a security upgrade. For bedrooms and interior rooms, a door knob with lock for bedroom privacy is a straightforward installation our team handles in a single visit, whether that means a simple privacy function or a keyed unit for a home office or medication cabinet.
Mortise Lock Service and Commercial Locksmith Work in San Antonio
The mortise lock is the workhorse of commercial and historic residential security in San Antonio. You will find them on the iron-and-glass entry doors of offices downtown, on the heavy wooden doors of craftsman bungalows in Beacon Hill, and throughout older multi-unit buildings across the city. Because a mortise lock body sits inside the door rather than on its surface, servicing it requires removing the lock case from the door pocket — a procedure that demands experience to avoid damaging the door edge or the lock body itself. Our commercial locksmith team handles full mortise lock teardowns, internal spring and lever replacement, cylinder extraction and rekeying, and complete unit replacement when a case is beyond repair.
Business owners dealing with a failed mortise lock on a storefront or office suite cannot afford to wait. A broken lock on a commercial door can mean an unsecured premises overnight or an inability to open for business in the morning — both costly outcomes. Our emergency locksmith response covers San Antonio around the clock, including weekends and holidays, and we carry mortise lock stock for common commercial door preps so repairs can often be completed in a single visit. If you manage multiple locations, ask us about master-key system design — a service that lets one key open specific groups of doors while keeping other areas restricted, which is a common need for property managers overseeing complexes near the Medical Center or along Loop 410.
What Determines Your Quote — and How to Reach Us Any Time
Several factors shape the final price of any rekeying or lock service call: the type and grade of lock involved (a standard knob cylinder versus a high-security mortise lock case), the number of locks being serviced in a single visit, the time of day (after-hours and overnight calls involve different logistics), the travel distance to your location within the San Antonio metro, and whether parts such as new hardware, cylinders, or pinning kits are required. We quote all of these factors transparently before work begins — you will never see a number on an invoice that was not agreed to up front. There are no surprises added at the end of a job. Call (210) 640-1899 any time of day or night, describe what you need, and we will give you a clear, itemized quote on the phone before dispatching a technician.
Trusted San Antonio Locksmith is a fully mobile operation — we come to your home, business, rental property, or job site anywhere in the greater San Antonio area. Our insured technicians carry the equipment to handle rekeying, door knob lock repair, mortise lock service, keypad installations, and more from a fully stocked vehicle, which means most jobs are completed without a return visit. Whether you are a homeowner in Helotes who just changed tenants, a property manager in Castle Hills scheduling a master-key rekey across six units, or a shop owner on Commerce Street whose mortise lock failed at midnight, we are the team to call. Reach us at (210) 640-1899 — we answer 24/7 and can usually dispatch within the hour.
Frequently asked questions
Is there a 24-hour locksmith in San Antonio?+
Yes — Trusted San Antonio Locksmith operates 24 hours a day, 7 days a week, including weekends and holidays. Whether your door knob lock fails at 2 a.m. or you need an emergency mortise lock repair on a Sunday morning, you can call (210) 640-1899 and reach a live dispatcher who will get a technician moving toward your location. We cover the full San Antonio metro, from the far North Side to the South Side and everywhere in between.
How much should a locksmith charge for rekeying?+
There is no single correct number because the final quote depends on real variables: the type of lock being rekeyed (a basic knob cylinder versus a commercial-grade mortise lock), the number of locks included in the visit, the time of the call, and any parts needed such as new pins, keys, or cylinders. What we can tell you is that Trusted San Antonio Locksmith provides an exact, itemized price before any work starts — no estimates that balloon after the job. Call (210) 640-1899 and describe your situation, and we will walk you through the quote on the spot.
What is a mortise lock and do you service them?+
A mortise lock is a lock mechanism housed inside a deep rectangular pocket cut into the door edge, rather than mounted on the door surface like a standard knob set. They are common on commercial doors, historic homes, and high-security residential applications across San Antonio. Servicing a mortise lock requires removing the lock case from inside the door, which is more involved than a standard knob repair. Our technicians are experienced with mortise lock teardowns, cylinder rekeying, internal part replacement, and full unit swaps — and we carry stock for common commercial preps so most repairs are completed in a single visit.
Can you install a smart lock or keypad lock on my existing door?+
In most cases, yes. A smart lock door knob or keypad lock door knob is designed to retrofit onto standard door prep holes, which means we can often install one without modifying your door at all. Our technicians handle the full installation, including pairing the device, walking you through the app or code setup, and ensuring a physical backup key option is in place. This is a popular upgrade for San Antonio homeowners, landlords, and short-term rental operators who need flexible, keyless access without a full door replacement.
How do I know if my lock needs rekeying or full replacement?+
Rekeying is the right call when the lock hardware itself is in good working condition but the key control situation has changed — new tenants, lost keys, a home purchase, or an employee departure. Replacement makes more sense when the lock is physically damaged, has a worn cylinder that no longer pins correctly, is the wrong security grade for its location, or is so outdated that rekeying parts are unavailable. Our technicians assess the hardware on-site and give you an honest recommendation before quoting anything. We never suggest replacement when rekeying will do the job.
What should I do if I am locked out — is picking a door knob lock something I can try myself?+
We understand the frustration of a lockout, but attempting to pick or force a lock without training almost always makes the situation worse — damaged cylinders, broken pins, and bent latch hardware are common results, turning a simple lockout into a costlier repair. The safest first steps are checking for a spare key with a trusted neighbor, trying another entry point you have authorized access to, or calling a professional immediately. Our emergency locksmith team is available around the clock at (210) 640-1899 and can open most residential and commercial doors without damage to the lock or door, then rekey or repair on the spot if needed.