Short answer: Moving into a home, losing a key, or parting ways with someone who had one all raise the same question: rekey or replace? This guide explains the difference, what is genuinely safe to do yourself, and where a professional saves you money and headaches.
Moving into a home, losing a key, or parting ways with someone who had one all raise the same question: rekey or replace? This guide explains the difference, what is genuinely safe to do yourself, and where a professional saves you money and headaches.
These two options solve different problems, and confusing them is a common way to overspend. Rekeying keeps your existing lock hardware but changes the internal pins so the old keys no longer work and a new key does. It is the right choice when the locks themselves are in good shape and you simply want to retire keys that may be floating around, such as after buying a home or when a former roommate, tenant, or contractor still holds a copy. Because you are only changing the internals, rekeying is usually the cheaper path, often a modest per-cylinder charge on top of a service call. Replacing swaps the entire lock for new hardware, which makes sense when the lock is worn, damaged, outdated, or when you want to upgrade to a higher security grade or a different style. The quick test: if you like your current locks and just want new keys, lean toward rekeying; if the hardware itself is failing or you want an upgrade, replacing is the honest answer.
Plenty of lock work is within reach of a careful homeowner. Swapping out a standard deadbolt or keyed doorknob is one of the most approachable projects: most residential hardware is designed for tool-light installation, the replacement usually fits the existing bore holes, and the instructions in the box are genuinely followable in under an hour. Retail rekey kits exist for common lock brands and let you rekey cylinders of the same brand to a single new key, which can be satisfying and economical if you have several matching locks and enjoy detail work. If you go the DIY route, buy quality hardware rather than the cheapest option, keep the small pins and springs organized because they are easy to lose, and test the lock repeatedly from both sides with the door open before you trust it. Doing the simple jobs yourself is a legitimate way to save money, as long as you are honest about your patience for fiddly parts.
Some situations reward calling a locksmith rather than fighting the job alone. High-security and smart locks, restricted or patented keyways, and commercial hardware are less forgiving and often require tools or authorization that retail kits do not include, so a professional avoids damaging expensive hardware. Master-key setups, where you want one key to open several different locks while individual keys open only their own door, involve pinning math that is easy to get wrong and worth handing to someone who does it daily. A stuck, jammed, or partially forced lock, or a door that no longer aligns with its frame, may point to a deeper problem that a locksmith can diagnose rather than mask. And if you simply want the peace of mind of knowing every old key is truly dead after a move, a professional rekey of the whole house is quick and removes the doubt. Paying for expertise on the hard jobs usually costs less than redoing a botched attempt.
These two options solve different problems, and confusing them is a common way to overspend. Rekeying keeps your existing lock hardware but changes the internal pins so the old keys no longer work and a new key does. It is the right choice when the locks themselves are in good shape and you simply want to retire keys that may be floating around, such as after buying a home or when a former roommate, tenant, or contractor still holds a copy. Because you are only changing the internals, rekeying is usually the cheaper path, often a modest per-cylinder charge on top of a service call. Replacing swaps the entire lock for new hardware, which makes sense when the lock is worn, damaged, outdated, or when you want to upgrade to a higher security grade or a different style. The quick test: if you like your current locks and just want new keys, lean toward rekeying; if the hardware itself is failing or you want an upgrade, replacing is the honest answer.
Plenty of lock work is within reach of a careful homeowner. Swapping out a standard deadbolt or keyed doorknob is one of the most approachable projects: most residential hardware is designed for tool-light installation, the replacement usually fits the existing bore holes, and the instructions in the box are genuinely followable in under an hour. Retail rekey kits exist for common lock brands and let you rekey cylinders of the same brand to a single new key, which can be satisfying and economical if you have several matching locks and enjoy detail work. If you go the DIY route, buy quality hardware rather than the cheapest option, keep the small pins and springs organized because they are easy to lose, and test the lock repeatedly from both sides with the door open before you trust it. Doing the simple jobs yourself is a legitimate way to save money, as long as you are honest about your patience for fiddly parts.
Some situations reward calling a locksmith rather than fighting the job alone. High-security and smart locks, restricted or patented keyways, and commercial hardware are less forgiving and often require tools or authorization that retail kits do not include, so a professional avoids damaging expensive hardware. Master-key setups, where you want one key to open several different locks while individual keys open only their own door, involve pinning math that is easy to get wrong and worth handing to someone who does it daily. A stuck, jammed, or partially forced lock, or a door that no longer aligns with its frame, may point to a deeper problem that a locksmith can diagnose rather than mask. And if you simply want the peace of mind of knowing every old key is truly dead after a move, a professional rekey of the whole house is quick and removes the doubt. Paying for expertise on the hard jobs usually costs less than redoing a botched attempt.
Call (650) 434-3885 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: (650) 434-3885 — a straight answer and an honest estimate before any work begins.