Rekey & Master Key Systems
If you have recently moved into a home near Marietta Square, gone through a change in household members, or simply lost track of who holds copies of your house key, rekeying your locks is one of the smartest and most cost-effective security decisions you can make. Rather than replacing the entire lock hardware, our skilled technicians reconfigure the internal pin tumblers so that only a brand-new key operates the lock — rendering every previous key permanently useless. Marietta Fast Locksmith dispatches mobile technicians across Marietta and the surrounding areas around the clock, so whether you are near the East Cobb corridor or closer to the Kennesaw Mountain foothills, help is never far away.
Open 24 hours, 7 days a week · Licensed, bonded & insured
Beyond basic rekeying, we also design and install master key systems for homeowners managing multiple entry points and for property managers overseeing multi-unit buildings throughout Cobb County. A well-engineered master key system gives you the freedom to issue individual keys that open only specific doors while a single master key grants access to every lock in the system — all without duplicating physical hardware unnecessarily. Our insured, experienced technicians handle everything from a single mortise lock rekey to a full property-wide master key rollout, and we confirm an exact up-front price before any work ever begins.
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 Marietta, we reach the Marietta 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.
More about our work
Everything you need to know about how we help — at a glance.
Why Rekeying Home Locks Is Smarter Than You Think
Most Marietta homeowners underestimate how many people may still have a working key to their front door. Previous owners, former tenants, old housekeepers, contractors, or even an ex-partner — any one of them could walk in unannounced. Rekeying addresses this problem at the source by changing the internal pin configuration of the existing lock cylinder. The deadbolt, the door knob lock hardware, and the mortise lock body all stay in place; only the cylinder is reconfigured. This means you get full, fresh security without the cost of brand-new hardware, and the work is completed quickly with no damage to your door or frame.
Our mobile technicians arrive fully equipped — no trip to a hardware store, no waiting for parts to be ordered. We carry a comprehensive selection of replacement pins, springs, and key blanks on every service vehicle so rekeying can typically be completed in a single visit. Factors that influence your final quote include the number of locks being rekeyed, the lock brand and type (a standard door knob lock rekeys differently than a heavy-duty mortise lock), the time of day the service is requested, and your location relative to our nearest available technician. We walk you through all of these variables and confirm the exact price before we touch a single cylinder.
Rekey & Master Key Systems: Building the Right Access Plan
A master key system is essentially a carefully engineered hierarchy of locks and keys. At the foundation, each individual key — sometimes called a change key — opens only the specific lock it was cut for. Above that sits the master key, which overrides every lock in the system. For larger properties, a grand master or great grand master layer can be added so that a building supervisor holds one key while individual unit managers hold keys that work within their own section. Marietta Fast Locksmith designs these systems from scratch, working with your existing lock hardware where possible and recommending compatible upgrades — including Schlage or Kwikset cylinders — where necessary.
This service is particularly valuable for landlords managing rental properties along busy corridors like Roswell Road or Canton Street, homeowners with detached garages and guest cottages, and small business owners who need staff to access common areas but not private offices. When we design a Rekey & Master Key Systems plan for your property, we document every key cut level so future rekeying or key additions can be done without disturbing the rest of the system. The result is a clean, scalable access structure that grows with your needs rather than creating headaches down the road.
Mortise Lock Rekeying and Upgrade Services for Marietta Doors
The mortise lock is one of the most secure and most complex lock types found on both residential and commercial doors throughout Marietta. Unlike a standard cylindrical lock that sits inside a bored hole, a mortise lock is recessed into a deep pocket cut into the door edge, integrating the latch, deadbolt, and cylinder into a single heavy-duty unit. Rekeying a mortise lock requires specific tools and a working knowledge of the lock's internal cartridge — it is not a DIY-friendly task. Our technicians are experienced with all major mortise lock formats, including both the older mortise designs common in historic Marietta homes and the modern high-security mortise cylinders used in commercial applications.
If your mortise lock is worn, damaged, or simply outdated, we can rekey the existing cylinder where possible or swap in a compatible replacement cylinder that accepts a fresh key — again, without forcing you to replace the entire door hardware assembly. For commercial clients, we can integrate a rekeyed mortise lock cylinder into a broader master key system, so your front entrance, back stockroom, and private office all operate within a single, organized access hierarchy. Whether you need a residential mortise lock rekey after a move or a commercial locksmith consultation for a multi-door property, call (770) 202-1324 and our team will come to you, any time of day or night.
Same-Day Mobile Service Across Marietta — 24/7, No Hidden Fees
One of the most common questions we hear from Marietta residents is whether there is a mobile locksmith in Marietta, GA who can handle rekeying on short notice without a long wait or a surprise invoice. The answer is yes — Marietta Fast Locksmith operates entirely as a mobile service, meaning our technicians come to your home, business, or rental property equipped to complete the job on the spot. There is no shop drop-off, no scheduling delay, and no need to remove your door hardware and haul it somewhere. We serve neighborhoods from West Marietta to the Shallowford Road area, and we are available every hour of every day, including holidays.
When you call us, you can expect a straightforward conversation about what you need, followed by a clear explanation of how your final price is determined — factors like the number of locks, the complexity of the hardware (a standard door knob lock versus a commercial-grade mortise lock), distance, time of call, and whether any new parts are required. You receive a confirmed price before work starts, with no add-ons sprung on you at the end. Our insured technicians treat your property with care, working to complete every rekey and master key system installation without damage to doors, frames, or surrounding finishes. Call (770) 202-1324 any time — we answer 24/7 and dispatch quickly throughout the Marietta area.
Frequently asked questions
Answers to what our customers ask most. Still unsure? Just call.
What are some good locksmiths in Marietta, GA?+
When evaluating any locksmith serving the Marietta area, look for a provider who is insured, arrives in a marked vehicle, identifies themselves professionally, and — critically — gives you a confirmed price before starting any work rather than quoting one figure on the phone and a different one at the door. Marietta Fast Locksmith meets all of these standards: our insured, experienced technicians operate mobile units throughout Cobb County, available 24/7, and we always confirm an exact up-front price. We recommend verifying those same practices with any provider you consider.
How much is a locksmith per hour?+
Most locksmith services — including rekeying and master key system setup — are priced per job rather than strictly by the hour, which is actually better for the customer because you know the total cost upfront rather than watching a meter run. The factors that shape your quote with us include the number and type of locks involved (a standard door knob lock rekeys differently than a multi-component mortise lock), the time of day you call, your location in the Marietta area, and whether any replacement parts or new key blanks are needed. We walk through all of these with you and confirm a firm price before any work begins — no hourly surprises.
What proof do I need for a locksmith?+
Any reputable locksmith — including our team at Marietta Fast Locksmith — will ask you to verify that you have lawful authority over the property or vehicle before performing a rekey or lock service. For a home, this typically means a government-issued photo ID matching the property address, a lease agreement, or a recent utility bill showing your name at that address. For a rental property, landlords may need to show ownership documentation. This is a protective practice for you as much as for us — if a locksmith never asks for verification, that should raise a concern. Our technicians handle verification professionally and discreetly on every call.
What is a locksmith call out fee?+
A call-out fee — sometimes called a service or dispatch fee — covers the cost of sending a technician to your location and is separate from the labor and parts involved in completing the actual job. At Marietta Fast Locksmith, we are transparent about every component of your quote. The distance between our nearest available technician and your Marietta-area location, the time of day, and the nature of the service all factor into your total. What we do not do is quote you a low number to get your commitment and then stack on fees once we arrive. The confirmed price you receive before work begins is the price you pay.
Is there a mobile locksmith in Marietta, GA?+
Yes — Marietta Fast Locksmith is a fully mobile locksmith operation based in Marietta. That means we come to you, whether you are at a residence near Marietta Square, a rental property off Roswell Road, or a commercial space anywhere in the greater Cobb County area. Our service vehicles are stocked with the tools and parts needed to handle rekeying, mortise lock service, master key system setup, and more — all on-site in a single visit. We are available 24 hours a day, seven days a week, including weekends and holidays, so you are never left waiting until business hours to secure your property.
Can I rekey all my locks to work with one key, and how does that differ from a master key system?+
These are two different but related services. Rekeying all your locks to a single key — sometimes called keying alike — means every lock on your property accepts exactly the same key. This is a great convenience solution for homeowners who want to stop juggling multiple keys for their front door, back door, and garage entry. A master key system, on the other hand, creates a hierarchy: individual keys open only specific locks, while a master key opens all of them. This is ideal for landlords, property managers, and businesses where different people need different levels of access. Our technicians assess your property and access needs, then recommend the right solution — whether that is a simple keying-alike rekey or a full multi-tier master key system design.