Insert the Pins and Reassemble the Lock Dump out the old pins, insert the new key, and use tweezers or small needle-nose pliers to match the new colored pins to the color code on the special instruction sheet. Once the new pins are in, reverse the steps to reassemble the lock. Family Handyman Originally Published: March 30, 2021 Similar Projects For the cost of your normal trade service call fee, a locksmith will come to your new home and rekey up to six keyholes on functioning, non-electronic deadbolts and knobs on doors accessing your home's structural walls. The contractor will supply you with up to four identical keys. 
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To rekey the deadbolt, remove it from the door and repin as you do a doorknob. Make sure the bolt is out and remove the screws holding the deadbolt to the door. Remove the cylinder from the housing and the endcap from the cylinder. Take out the retainer pin. Options for Rekeying a Traditional Lock Call a locksmith. This is the most expensive option. A locksmith will usually charge a set rate for a service call (often between $40 and $100) and then.
When you need your house door locks rekeyed, you can always buy entirely new locks and install them. But this is an expensive solution to a simple problem; it wastes locks and doorknobs simply for the sake of obtaining new keys. Plus, if you need to rekey multiple locks, you end up with multiple keys. The best solution is to rekey your locks. The main difference between replacing a lock and rekeying one is that you are now going to be using an entirely different (and potentially brand new) lock. Replacing a lock usually means that the entire lock body will be different. It is a much more costly process than rekeying the lock but it does have its benefits. 
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Test the re-keyed lock to make sure it locks and unlocks with the new key. Method 2 Car Door Locks 1 Remove the lock from the car. The exact method depends on the vehicle and whether the lock is a door, trunk, or ignition lock. You may need special equipment to remove the lock. 2 Remove the inner lock tumbler. SmartKey Security™ features re-key technology, which allows you to re-key your locks yourself in seconds, because we realize the person who has your key today may not be the same person you want to have your key tomorrow. Reasons to Re-key Loaned or unreturned Keys Recently moved, tenant turnover Your child has lost their key. again
7 Answers Sorted by: 22 Most brands of locks can be re-keyed, but it usually requires specialized techniques and sometimes tools. Many retailers will do it in-house free or for a small fee. Otherwise, any locksmith* should be able to help you out. You can rekey locks to match existing keys when the locks have the same keyway. To test if they are teh same keyway, take the key you want to use, and see if it slides into the key hole of the new lock. If it slides in, the new door lock can be rekeyed to use the same key. 
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The cost to rekey a house with 3-doors is from $200-$250. This cost includes a service call and the cost to remove the locks, rekey the lock cylinders, and reinstall. The cost to rekey your house will fluctuate depending on the total number of lock cylinders (i.e. keyholes) that are being rekeyed. Replacing a lock means you discard your old lock and install a new one. You can choose a totally different type of lock, like replacing a knob lock with a smart lock or keypad lock. Needless to say, this method will increase the security of your new home and make your life more convenient.
Typical Cost to Rekey Locks. Prices will vary depending on where you live, but locksmiths typically charge by the hour, so the cost to rekey locks can range from $75 to $100 per hour. If you have more than two or three doors you need to re-key, you can expect a locksmith to take more than an hour to complete the job. You'll pay from $40 to $300 to buy a new door lock, depending on design, materials, and whether it's a simple key-in-knob lock or a high-end lock-and-handle combo with smart technology. 
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When you change your locks, a locksmith installs an entirely new lock with a new key. This service is pricier than having your locks rekeyed, as you are paying for not just the labor of the locksmith, but also the hardware of a whole new locking system. Changing your locks costs around $75 per hour. Can You Change Locks by Yourself? There's also a disadvantage to changing your locks: Costly. Lock replacement is a more costly and technically complex procedure than rekeying your locks. In addition to the cost of the new lockset, you will have to pay for the additional labor. It costs more than the total cost to rekey locks, where you only spend money on the key pins.