Rekeying is a practical, efficient, and cost-effective solution that ensures previous keys no longer provide access to your property, ideal for situations such as moving into a new home, employee turnover, lost keys, or upgrading overall security. So, How long does it take to rekey a lock? This is a common question among homeowners, property managers, and business owners looking to enhance their security without replacing existing hardware?
Understanding the time commitment involved in rekeying a lock is essential in a fast-paced world where time and safety are top priorities. When handled by a professional locksmith, the process is generally quick and straightforward, but several factors—such as lock type, condition, and number of locks- can affect the overall duration. This guide will walk you through how rekeying works, the time required, and when it’s best to consider rekeying versus replacing a lock, helping you make an informed decision about your property’s security.
How long does it take to rekey a lock?
On average, it takes a professional locksmith 10 to 15 minutes to rekey a single standard lock. However, the total time can vary based on the lock type, the condition of the hardware, and the number of locks involved.
| Scenario | Estimated Time |
| Rekeying 1 basic deadbolt or doorknob | 10–15 minutes |
| Rekeying 3–5 locks | 30–60 minutes |
| Rekeying high-security commercial locks | 20–30 minutes per lock |
| Rekeying without the original key | Add 10–20 minutes |
Rekeying 1 Basic Deadbolt or Doorknob
A single residential lock, such as a basic deadbolt or interior doorknob, is the quickest to service. When handled by a trained locksmith, the entire process—from disassembly to reassembly—takes about 10 to 15 minutes. These types of locks are common in homes and require minimal tools and effort to adjust. Since they have simple pin configurations, a locksmith can quickly reset the internal pins to match a new key. This makes it an ideal solution for homeowners needing to update access without replacing the hardware. Efficient, affordable, and fast, this is the most straightforward type of rekeying job.
Rekeying 3–5 Locks
When multiple locks on a property need to be updated, the total time increases based on the number and type of locks involved. Rekeying three to five locks typically takes 30 to 60 minutes for a professional locksmith. The locksmith assesses each lock, determines if they can be keyed alike for convenience, and then works through them efficiently. If the locks are of the same brand and style, the process may be quicker. This service is commonly requested by landlords, real estate agents, or property managers aiming to secure entire properties with a single set of keys.
Rekeying High-Security Commercial Locks
High-security or commercial-grade locks are engineered for enhanced protection, featuring complex pin structures, restricted keyways, and advanced internal mechanisms. Because of their precision and added security layers, these locks require more time and expertise to service—generally 20 to 30 minutes each. Locksmiths may need specialized tools and extra care to avoid damaging the mechanism. These locks are commonly found in offices, retail spaces, or industrial buildings. The extra time investment ensures that access control is properly maintained while preserving the integrity of the locking system. It’s a critical service for businesses prioritizing robust and compliant security standards.
Rekeying Without the Original Key
When the original key is unavailable, the process becomes more complex and time-consuming. Locksmiths must either pick the lock or decode the pin configuration before they can begin servicing it. This additional step typically adds 10 to 20 minutes to the overall job. The absence of the key prevents quick access to the lock’s internal components, which slows the workflow. This scenario is common when keys are lost, stolen, or not returned by previous tenants or employees. Skilled professionals use precision tools to access and modify the lock safely without causing damage, ensuring seamless access restoration.
What Does Rekeying a Lock Involve?
Rekeying is a specialized security service that focuses on modifying the internal components of an existing lock rather than replacing the entire unit. The objective is to render the old keys ineffective, ensuring that only a newly configured key can grant access. This is a practical and cost-efficient option for enhancing security without needing new lock hardware.
Inside every pin-tumbler lock is a set of small pins aligned to match a specific key cut. During rekeying, a locksmith changes the alignment of these pins to correspond with a new key pattern. This way, even though the outer hardware remains untouched, the internal mechanism is entirely reconfigured for new access control.
Detailed Steps Involved in the Rekeying Process:
- Remove the Lock Cylinder
The locksmith begins by carefully detaching the lock cylinder from the door or locking mechanism. This component houses the internal pin system that interacts with the key.
- Access and Adjust the Internal Pins
Once opened, the pins inside the cylinder are either replaced or re-positioned to align with a new key’s cut. This reconfiguration ensures that only the new key can rotate the cylinder.
- Reassemble the Lock and Install Back in Place
After the pin adjustments are made, the locksmith reassembles the cylinder, tests the new key for proper operation, and reinstalls the lock securely on the door.
- Clean and Lubricate
As a final touch, professionals often clean out dust or debris and apply lubricant to the internal parts. This helps the lock function smoothly and can extend its lifespan.
How Do Locksmiths Rekey a Lock?
Professional locksmiths follow a precise and methodical approach to rekeying, ensuring the lock remains functional while restricting access from any previously issued keys. Here’s a step-by-step look at how the process is carried out:
Assessment of the Lock
- Inspect the lock’s type, brand, and current condition.
- Determine if the lock is rekeyable or if replacement is necessary.
- Check for wear, rust, or damage that may complicate the process.
- Verify whether the original key is available, which simplifies disassembly.
Disassembling the Lock Mechanism
- Remove the lock from the door or the hardware it’s installed in.
- Extract the cylinder (the core part that interacts with the key).
- Carefully open the cylinder to access internal pins and springs.
- Maintain proper alignment to avoid damaging delicate components.
Changing the Key Pins
- Replace existing pins with new ones that match the new key cut.
- Use a key decoder or pinning chart to ensure precision.
- Test the new key within the cylinder to ensure smooth rotation.
- Confirm that the previous key no longer turns in the lock.
Reassembly and Final Testing
- Reassemble the lock and reinstall it into the door or device.
- Test the newly keyed lock multiple times to confirm smooth operation.
- Apply lubricant for optimal performance and longevity.
- Provide the client with new keys and proper guidance on usage.
Should You Rekey Your Lock or Replace It?
While securing your home or business, it’s important to choose the right solution for your needs. Here’s how to determine whether rekeying or replacing is the better option:
When to Consider Rekeying:
- You’ve moved into a new property:
Rekeying ensures that previous tenants, owners, or contractors no longer have access. - You’ve lost a copy of your key:
For peace of mind, updating the key pattern without replacing the entire hardware is a quick fix. - You want to match multiple locks to a single key:
This streamlines access across different doors for convenience. - You recently had staff changes (for businesses):
A smart way to maintain internal security without a full system upgrade. - Your existing locks are still in good condition:
Rekeying keeps costs low while retaining functional, secure hardware.
When to Consider Replacing:
- The lock is damaged or worn out:
If it’s difficult to operate or shows signs of rust or internal failure, replacement is the safer option. - You want to upgrade to a modern or smart locking system:
Replacing allows you to enhance your security with updated technology. - Your current locks are outdated or low quality:
Installing new, high-security hardware improves overall protection. - The lock no longer aligns properly with the door frame:
Mechanical issues caused by settling, warping, or prior improper installation may require new hardware. - You want aesthetic upgrades to match home renovations:
New locks can offer a fresh, cohesive look with your home’s updated design.
Factors That Affect Rekeying Time
While the process is usually quick, certain factors can impact how long it takes to rekey a lock.
Type of Lock
- Standard residential locks are generally quicker to service.
- High-security or commercial-grade models require more time due to their complex internal mechanisms.
- Smart locks or electronic systems often involve additional steps for configuration or disassembly.
Condition of the Lock
- Well-maintained locks are easier and faster to disassemble and reassemble.
- Older, rusted, or damaged locks may require extra care and time to handle properly.
- Stuck components or debris inside the lock can delay the process.
Availability of the Original Key
- Having the current key allows the technician to rekey the lock without needing to pick or decode it.
- If the key is lost, additional steps such as lock picking or cylinder removal may be needed.
- This can extend the service time by 10 to 20 minutes or more, depending on the lock type.
Number of Locks
- Servicing a single unit is much quicker than handling multiple doors.
- Larger homes or commercial properties with several entry points will naturally take longer.
- Time can be reduced if multiple locks are keyed alike in a master key system.
Final Words
So, How long does it take to rekey a lock? Understanding how long it takes to rekey a lock is essential when planning a security upgrade for your home or business. On average, a skilled locksmith can complete the task in just 10 to 15 minutes per lock, making it one of the quickest and most cost-effective ways to regain control over who has access to your property. This process allows you to maintain existing hardware while enhancing overall safety.
Whether you’ve moved into a new residence, lost a key, or experienced a personnel change at your business, rekeying offers a practical solution without the need for full lock replacement. If you’re unsure whether rekeying or replacing your locks is the better option, our licensed professionals are here to guide you. We provide reliable, efficient locksmith services tailored to your needs, ensuring your property remains protected at all times.
