When rekeying is the right call
Rekeying fits when a key is unaccounted for after a move-in, a contractor or property manager handover, a lost keyring, staff turnover at a home office, or a roommate or tenant change. It also fits when several doors have drifted onto different keys and the household wants one key again. If the hardware itself is failing or has been forced, that becomes a lock repair or replacement conversation instead.
What is specific about Mul-T-Lock cylinders
Certain Mul-T-Lock high-security key platforms use patented key-control features, where blanks are not sold over the counter and a key cannot be casually copied at a hardware store. Not every Mul-T-Lock product is part of such a platform, so the first step is identifying which system your cylinders actually belong to. Where a restricted platform is in use, the rekey changes in two ways — the new keys come from a controlled source, and duplication afterward is tied to the key-control arrangement rather than to whoever walks into a store.
Changing key control without replacing hardware
This is the main reason to rekey rather than replace: the deadbolts, levers, and door prep stay exactly as they are, and only the cylinder's key configuration changes. On a house with several high-security cylinders, that difference is significant — the hardware investment stays in place and only the keys change hands.
Cylinder inspection first
Before rekeying, each cylinder is inspected: keyway and cylinder type, condition and wear, how smoothly the key currently turns, and any evidence of forcing or of a previous non-original repair. A cylinder that is already worn or damaged is a poor candidate — rekeying it produces new keys for a lock that is about to fail anyway.
Keying alike, and mixing with other brands
Multiple Mul-T-Lock cylinders of the same keyway family can normally be keyed alike so one key runs the house. Mixing Mul-T-Lock with other manufacturers' cylinders on a single key is generally not possible, because the keyway is proprietary — in a mixed house the usual answer is either to standardize the doors that matter or to accept two keys. Compatibility is confirmed after inspection.
New keys and the key-control record
The rekey ends with a defined number of keys and a record of who has them. That record is the part people skip, and it is the part that makes the next rekey unnecessary. If the household wants additional keys later, they are ordered through the same controlled channel rather than duplicated ad hoc.
When replacement beats rekeying
Replacement is the better answer when the cylinder is worn to the point of sticking, when the door has hardware from several eras and nothing shares a keyway, when the existing cylinder is not actually a restricted product and the owner wants key control they never had, or when the key system's paperwork is unknown and the owner wants a clean start. Those cases are called out after inspection rather than upsold by default.
Limitations to expect
Restricted systems trade convenience for control: keys take longer to obtain than a hardware-store copy, and some ordering requires authorization. Not every existing cylinder can be brought onto an existing key. Some cylinders may require replacement parts after inspection. These are the honest constraints of high-security keying, and they are worth knowing before booking.
What affects the price
Cost depends on how many cylinders are rekeyed, whether they can all share one key, how many keys are issued, and whether any cylinder turns out to need service or replacement. The service call starts at $49 and the work is quoted per cylinder after inspection. Falcon Locksmith is owner-operated — the owner inspects the cylinders and does the keying, and no dispatcher sits in between.