Short answer: Some lock jobs are a genuine, satisfying weekend project; others quietly go sideways in ways that cost more to undo than they would have to hire out. Here is how to tell which is which before you pick up a screwdriver.
Some lock jobs are a genuine, satisfying weekend project; others quietly go sideways in ways that cost more to undo than they would have to hire out. Here is how to tell which is which before you pick up a screwdriver.
Before deciding who does the work, decide what the work even is, because the two options differ a lot in cost. Rekeying keeps your existing lock hardware and simply changes the internal pins so your old keys no longer work and a new key does; it is the right call when the locks are in good shape and you mainly want to cut off anyone who might still hold a key, such as after moving in, losing a set, or a roommate leaving. Rekeying is usually the cheaper path, often a modest amount per cylinder on top of a service call. Replacing swaps out the whole lock for new hardware, which makes sense when a lock is worn, damaged, cosmetically dated, or you are upgrading to a higher security grade or a smart lock. A quiet bonus of rekeying is that a locksmith can often set several different locks to open with one single key, which is tidy to live with and awkward to achieve yourself across mismatched brands.
Plenty of lock work is well within reach of a careful homeowner with basic tools. Swapping a deadbolt or knob for a new one that fits the same standard door prep is often a genuine thirty-minute job: a few screws, a latch, a strike plate, and patience lining things up. Many smart locks are designed specifically for retrofit, reusing your existing deadbolt cutout so the 'installation' is mostly a screwdriver and an app. A single-brand rekey kit can let you re-pin your own locks if you enjoy fiddly work and all your locks share that brand. The keys to a good DIY result are matching the new hardware to your door's existing bore and backset, not overtightening screws into the cylinder, and testing that the bolt throws smoothly before you call it done. If the parts fit and the door already closes cleanly, this is a fair project to own yourself.
The jobs worth handing off are the ones where the lock is only half the problem. A door that has dropped, swollen, or fallen out of square will fight every new lock you install, and a locksmith diagnoses and corrects that alignment rather than forcing hardware that binds. Mortise locks, older or non-standard door prep, commercial storefront hardware, and high-security or restricted-keyway systems all reward experience and specialized tools. Whole-home security changes are another sweet spot: rekeying every exterior lock to one key after a move or a breakup is fast and inexpensive for a professional and tedious to get right yourself. Expect a new deadbolt supplied and installed by a locksmith to land in the range of roughly $100 to $250 or so depending on the hardware you choose, with rekeying typically much less per lock. The honest test is this: if the door closes cleanly and the parts clearly fit, try it yourself; if anything sticks, binds, or looks non-standard, a locksmith will usually save you money and a second attempt.
Before deciding who does the work, decide what the work even is, because the two options differ a lot in cost. Rekeying keeps your existing lock hardware and simply changes the internal pins so your old keys no longer work and a new key does; it is the right call when the locks are in good shape and you mainly want to cut off anyone who might still hold a key, such as after moving in, losing a set, or a roommate leaving. Rekeying is usually the cheaper path, often a modest amount per cylinder on top of a service call. Replacing swaps out the whole lock for new hardware, which makes sense when a lock is worn, damaged, cosmetically dated, or you are upgrading to a higher security grade or a smart lock. A quiet bonus of rekeying is that a locksmith can often set several different locks to open with one single key, which is tidy to live with and awkward to achieve yourself across mismatched brands.
Plenty of lock work is well within reach of a careful homeowner with basic tools. Swapping a deadbolt or knob for a new one that fits the same standard door prep is often a genuine thirty-minute job: a few screws, a latch, a strike plate, and patience lining things up. Many smart locks are designed specifically for retrofit, reusing your existing deadbolt cutout so the 'installation' is mostly a screwdriver and an app. A single-brand rekey kit can let you re-pin your own locks if you enjoy fiddly work and all your locks share that brand. The keys to a good DIY result are matching the new hardware to your door's existing bore and backset, not overtightening screws into the cylinder, and testing that the bolt throws smoothly before you call it done. If the parts fit and the door already closes cleanly, this is a fair project to own yourself.
The jobs worth handing off are the ones where the lock is only half the problem. A door that has dropped, swollen, or fallen out of square will fight every new lock you install, and a locksmith diagnoses and corrects that alignment rather than forcing hardware that binds. Mortise locks, older or non-standard door prep, commercial storefront hardware, and high-security or restricted-keyway systems all reward experience and specialized tools. Whole-home security changes are another sweet spot: rekeying every exterior lock to one key after a move or a breakup is fast and inexpensive for a professional and tedious to get right yourself. Expect a new deadbolt supplied and installed by a locksmith to land in the range of roughly $100 to $250 or so depending on the hardware you choose, with rekeying typically much less per lock. The honest test is this: if the door closes cleanly and the parts clearly fit, try it yourself; if anything sticks, binds, or looks non-standard, a locksmith will usually save you money and a second attempt.
Call (408) 791-0007 and describe the situation, your exact location, and what you need. Timing is confirmed on that call rather than promised in advance.
Call for help: (408) 791-0007 — a straight answer and an honest estimate before any work begins.