Should You Rekey or Change Locks After Moving Into a Chicago Home?

When a locksmith rekeys a lock, they disassemble the lock cylinder and rearrange the internal pins — called key pins and driver pins — so that the old key no longer works and a new key is cut to match the fresh pin configuration. The lock hardware itself stays exactly where it is on your door. So when people ask 'can you rekey a lock without replacing it,' the answer is yes — that's precisely the point. Rekeying is faster, involves fewer parts, and is the right call when your existing hardware is in solid mechanical condition. The final cost depends on factors like the lock type, how many cylinders need rekeying, and the time of day you call — but our team confirms an exact, up-front price before any work begins.

A full lock change means removing the existing hardware entirely and installing new deadbolts, knobs, or a mortise lock assembly. This is the better path when the current lock is damaged, outdated, or simply not the right security grade for your door. Mortise lock systems — common on older Chicago multi-unit buildings and commercial storefronts — are a specialty of ours. A mortise lock sits inside a deep rectangular pocket cut into the door edge, giving it significantly more strength than a surface-mounted rim lock. If your new home has one of these, you'll want an experienced locksmith who understands the specific dimensions and brands involved, from Schlage to Kwikset and beyond.

Here's how a professional approaches the job: the locksmith removes the lock cylinder from the door, extracts the plug using a specialized follower tool, swaps out the existing key pins for a new set that matches your chosen key cut, reassembles the cylinder, and tests it with both the old key (which should no longer turn) and the new one (which should operate smoothly). That's the core of how you rekey a door lock — it sounds simple, but getting the pin sizes right requires precision and the right tools. Attempting a DIY rekey with a mail-order kit is possible on basic Kwikset pin tumbler locks, but on high-security cylinders or mortise lock systems, a mismatched pin stack can leave you with a lock that binds, fails, or worse — doesn't latch properly at all.

Now, can you rekey any lock? Mostly yes, but with important caveats. Standard pin tumbler deadbolts and door knob locks are almost always rekeyable. High-security locks with sidebar mechanisms or patented key control systems can be rekeyed but require brand-specific tools and pins. Wafer locks, tubular locks, and certain antique lock types may not be rekeyable at all, or may require full replacement. And what about smart locks — can you rekey a smart lock? Many smart locks with a physical key backup (like certain Schlage Connect models) can have their cylinder rekeyed just like a traditional lock. Some fully electronic models with no key cylinder cannot be rekeyed in the traditional sense — instead, you reset the access codes and delete old user credentials. If you're unsure what you have, call us at 773-830-2610 and describe the hardware — we'll tell you exactly what's possible before we even arrive.

Moving day in Chicago doesn't always go smoothly. Keys get lost in the chaos of boxes and moving trucks. Locks jam after years of Chicago winters warping door frames. Sometimes a landlord hands over a key that barely works and you discover it at 11 PM on a Sunday. These are exactly the moments when having a 24/7 emergency locksmith on call matters. Lake View Locksmith Chicago is a fully mobile operation — our technicians come to you across the Chicago area, whether you're on the North Side near Wrigley or further south toward Hyde Park.

As a residential locksmith, we handle lockouts, broken key extractions, and urgent rekeying requests at any hour. As a commercial locksmith, we serve business owners who need a mortise lock replaced or rekeyed after a lease change or staff turnover. And as an automotive locksmith, we cover car lockouts, transponder key programming, and ignition repairs for drivers across Chicago — because sometimes the stressful day involves both a new apartment and a locked car in the alley. No matter the situation, we verify ownership before any work begins, confirm pricing up front, and get the job done right the first time.

Chicago's housing stock is genuinely old — and that's part of its character. A significant share of Lake View's greystones and two-flats still have original mortise lock assemblies that date back decades. A mortise lock is a high-security format when it's in good condition: the lock body is embedded inside the door, making it resistant to kick-ins and prying in ways that a simple door knob lock simply cannot match. If your new home has a functioning mortise lock, a professional rekey may be all you need. If the mortise lock is worn, the latch is sluggish, or the trim is cracked, this is the right moment for a full replacement — and a skilled locksmith can source and install a compatible unit, preserving your door's integrity without requiring carpentry.

For doors with standard cylindrical deadbolts or a door knob lock, the rekeying process is quicker and the hardware options at replacement are broader. If you're upgrading, consider moving to a Grade 1 deadbolt, which meets the highest residential security standard. On the smart lock question — can you rekey a smart lock without the original key? If the smart lock has a rekeying kit built in (Kwikset's SmartKey technology is one example), a locksmith can rekey the cylinder even without the prior key using a reset tool. Without a built-in reset mechanism, a full lock replacement is usually the correct call. Whatever combination of hardware your new Chicago home has, our team can assess, advise, and execute — with no guesswork and no surprises on the final bill.

Two of the most common questions we hear are 'How much does a local locksmith charge?' and 'How do I know if a locksmith is legit?' Let's address both directly. On pricing: there is no single flat rate for locksmith work, and any company that quotes you a firm price without knowing your lock type, your location, and the time of day is guessing. Honest factors that shape your final quote include the type of lock (mortise lock systems take longer than a simple door knob lock rekey), the number of cylinders, whether replacement parts are needed, travel distance within Chicago, and whether it's a standard weekday call or a 3 AM emergency. What we always do is give you a confirmed, exact price before any work starts — no bait-and-switch, no invoice surprise. So if you're wondering 'How much does a locksmith cost in Chicago,' the right answer is: it depends on your specific job, and a trustworthy locksmith will tell you before they start.

As for legitimacy: a professional locksmith should arrive in a marked vehicle, present ID upon request, ask for proof that you are the resident or owner before working on any lock, and be able to explain clearly what work they're doing and why. We are insured, and our technicians are trained and experienced across residential, commercial, and automotive services. If anyone ever asks you where to find good locksmiths on the South Side of Chicago or anywhere else in the city — the answer is the same: look for a team that's transparent about pricing, verifies your identity, and doesn't pressure you into unnecessary upgrades. That's exactly how we operate. If you're ready to secure your new Chicago home, call 773-830-2610 — we answer 24/7 and can often be at your door the same day.