Just Bought a Home in San Antonio? Rekey vs. Replace Your Locks

Real estate transactions in Bexar County routinely involve multiple key holders — listing agents, showing agents, inspectors, stagers, and previous tenants in rental-to-sale properties. Standard practice is to collect those keys at closing, but there is no auditable chain of custody for copies that were made along the way. San Antonio's older neighborhoods, like King William and Monte Vista, often have homes with decades of ownership history, which means decades of potential key duplication. The risk is not hypothetical; it is structural. Addressing it immediately is simply good ownership.

The good news is that you do not always need to spend a significant amount replacing every lock in the house. In many cases, rekeying is the faster, smarter move. Understanding the rekey vs lock change distinction lets you make a confident decision rather than defaulting to whichever option a hardware store employee happens to suggest.

Rekeying a lock means a trained locksmith removes the lock cylinder and replaces the internal pin tumblers with a new set. Your existing hardware stays in place on the door — only the combination of pins changes, which means your old keys no longer work and a fresh set does. This is a fast, precise process that leaves the structural integrity of your door hardware completely intact. For most resale homes with locks that are in good mechanical condition, rekeying is the most logical first move. A skilled locksmith can rekey a standard door knob lock or deadbolt in minutes, and the result is exactly as secure as a brand-new lock using the same mechanism.

A full lock change — also called lock replacement — means the entire lockset is removed and a new one is installed. This makes sense in several specific scenarios: the existing hardware is worn, damaged, or low-quality; you want to upgrade to a higher-security option like a mortise lock; you are standardizing a home to a single key (a process called master keying); or you simply want modern hardware that matches a renovation. The cost factors for a replacement include the grade and style of the new hardware, any door prep work required, and labor time — your locksmith will confirm an exact price before touching anything.

Many of San Antonio's historic homes — particularly in Southtown, Beacon Hill, and the older sections of Tobin Hill — were originally fitted with mortise locks, the heavy rectangular units that sit inside a pocket cut into the door edge rather than surface-mounted like a standard cylindrical lockset. A locksmith mortise lock service is one of the most requested upgrades we handle, and for good reason: mortise locks distribute force across a much larger area of the door edge, making them significantly more resistant to kick-in attacks than a typical door knob lock or basic deadbolt.

If your new home already has mortise lock hardware, a professional locksmith can rekey it just like any other cylinder — keeping that robust body in place while eliminating access from old keys. If it has been replaced at some point with an inferior cylindrical lock, restoring a quality mortise lock is an investment that pays off in both security and character, especially on vintage doors with original mortise pockets already cut. Our experienced team carries and installs mortise lock hardware suited to both historic and contemporary San Antonio homes, and we will tell you honestly whether your current door prep supports an upgrade or needs additional work first.

This is also a good moment to ask about home insurance requirements. Some policies reference a 5-lever lock standard for certain coverage levels — a detail worth confirming with your insurer before you settle on hardware, so your locksmith can match the specification exactly.

One of the most common questions we hear is: is there a 24-hour locksmith in San Antonio who can come to me tonight? The answer, for Trusted San Locksmith, is yes — every night, every day, including holidays. Moving chaos creates lock situations at inconvenient hours: a lockout during a late-night unpacking session, a deadbolt that stops working mid-evening, a realtor lockbox that will not release. These are not emergencies that can wait until Monday morning.

When you call (210) 640-1899, here is what actually happens: a real person answers, we ask a few quick questions about your lock type and situation, and we give you an honest, up-front price before dispatching. Factors that shape that price include the type of lock involved (a standard door knob lock quotes differently than a high-security mortise lock cylinder), time of day, your location within the San Antonio metro, and whether any parts are needed. There are no hidden fees added after the job. We verify ownership before any work begins — this is standard professional practice and protects you as much as it protects the property. If you are in the middle of a move and need same-day rekeying across multiple entry points, call us early and we will coordinate the visit around your schedule.

How much should locksmiths charge? The honest answer is: it depends on those specific factors, and any locksmith who quotes a flat price over the phone without knowing your lock type and location is guessing. What you should always receive is a confirmed, itemized price before work starts — that is the standard we hold ourselves to on every call.

Rekeying or replacing your primary entry lock is step one, but a thorough day-one security review covers more ground. Walk every exterior door — including garage entry doors, back doors, and French doors — and assess whether the lock hardware matches the risk level of that opening. Sliding glass doors common in Hill Country-adjacent new builds off TPC Parkway need secondary security measures in addition to their standard latch. Windows on ground-floor rooms in older bungalows deserve a look at their latches before you assume they are secure.

Consider keying all your exterior locks alike so one key operates every door — our team can rekey existing hardware to a single key during the same visit, saving you multiple trips. If your home has a detached garage, workshop, or storage unit with a padlock, those should be rekeyed or replaced on the same timeline. For homeowners running a small business from a San Antonio address, a commercial locksmith assessment of any office or storage areas is worth scheduling separately, since commercial-grade locks and access control systems operate under different standards than residential hardware. And if you ever find yourself locked out before the new hardware is sorted — whether from your home or your vehicle — Trusted San Locksmith handles both residential lockouts and automotive lockouts around the clock. Our mobile team covers the full San Antonio area, from the South Side to Stone Oak, and we carry the tools to handle everything from a standard door knob lock to a complex transponder key situation on-site.

We handle a wide range of situations so you are never left searching for a second provider. Here are the specific services our mobile team delivers across Bexar County and surrounding communities: residential lock rekeying, full lock replacement and installation, mortise lock installation and rekeying, high-security deadbolt upgrades, master key system setup, garage entry door lock service, sliding door lock and bar installation, keypad and smart lock installation, lock repair for damaged or malfunctioning hardware, door knob lock replacement, padlock and hasp installation for gates and outbuildings, mailbox lock replacement, emergency locksmith response for home lockouts, after-hours residential lockout service, commercial door lock installation, commercial lock rekeying for multi-unit properties, access control system consultation for small businesses, commercial locksmith services for retail and office spaces, file cabinet and desk lock service, automotive lockout assistance for cars, trucks, and motorcycles, car key replacement including transponder and laser-cut keys, ignition lock cylinder repair and replacement, key fob programming, motorcycle lock and ignition service, and child-locked-in-vehicle emergency response. Each service call begins with a confirmed price and ends with a documented job — no loose ends.