Rekeying & Door Knob Lock Replacement

Rekeying is one of the most requested services we handle across Salt Lake County — from Millcreek apartments to Sandy single-family homes. The process involves disassembling the lock cylinder, swapping out the driver and key pins inside, and re-pinning the plug so that only a newly cut key operates the lock. Your existing hardware stays in place; only the internal pin configuration changes. This is the smart call after a move-in, a roommate change, a lost key, or any situation where you are no longer certain who holds a working copy. A quality rekey on a standard door knob with lock and key takes a skilled technician roughly 20 to 30 minutes per cylinder under normal conditions, though mortise lock cylinders and multi-point systems can take longer due to additional disassembly steps. Our technicians carry a wide assortment of pinning kits and key blanks in the service vehicle, so the vast majority of rekeying calls in Salt Lake County are completed in a single visit without ordering parts.

One thing homeowners often miss: rekeying only works as well as the cylinder itself. If the plug is corroded, if pins are binding, or if the keyway is visibly worn, rekeying will produce a cylinder that technically works but will not hold up reliably. In those cases, our technicians will walk you through the evidence before recommending a replacement — and we confirm an exact up-front price before any work begins. Factors that shape the final quote include the number of cylinders being rekeyed, the complexity of the lock type (a standard knob lock versus a mortise lock involves different labor), the time of the call, and any parts required. No surprises at the end of the job.

Not every door knob with lock is created equal, and the wrong choice can leave a door weaker than the original hardware. Our technicians evaluate door thickness, existing bore diameter, strike plate depth, and frame condition before recommending a replacement. Residential doors in older Salt Lake City neighborhoods — think the brick bungalows near Liberty Park or mid-century construction in Murray — often have non-standard bore spacing that requires an adjustable latch or a retrofit plate rather than a straight swap. For interior applications like a door knob with lock for bedroom use, privacy function knobs with a simple push-button or turn-button are appropriate. For exterior use, a keyed entry knob lock paired with a deadbolt above it is the minimum we typically recommend, because a knob lock alone is not a standalone security solution for an exterior door. Brands we regularly install include Schlage and Kwikset, both of which offer cylinders compatible with our rekeying tooling so we can key new hardware to match your existing keys on the spot.

A double lock door knob — meaning a knob with both a push-button interior lock and a keyed exterior cylinder — is a popular upgrade for in-law suites and attached casitas common in South Jordan and Draper. Our mobile service vehicle stocks several finish options and function grades so we can match existing hardware aesthetics where possible. We also handle sliding door lock replacement on the same call when a homeowner is updating all exterior points of entry at once; patio door locks have their own wear patterns and replacement process, and our technicians are familiar with the track-mounted and mortise-style mechanisms common in Salt Lake County homes. Every replacement job includes testing the door swing, latch engagement, and key operation before we pack up.

Mortise locks are the standard for commercial doors, apartment building entries, and older residential construction throughout Salt Lake County. Unlike a cylindrical knob lock, a mortise lock is set into a pocket cut into the door edge, housing the latch, deadbolt, and often a cylinder in a single cast body. This makes them more robust but also more involved to service. As a commercial locksmith resource for Salt Lake County businesses — from small retail storefronts on State Street to multi-unit residential properties in Taylorsville — we rekey mortise lock cylinders, replace worn cases, and upgrade to higher-security cylinders with restricted keyways that limit unauthorized key duplication. If your commercial property has experienced a break-in attempt or a personnel change, a mortise lock rekey or cylinder upgrade is often the fastest way to restore controlled access without replacing the entire door prep.

Our mobile team carries common mortise lock cases and cylinders for immediate replacement, and we can special-order less common profiles when a next-day appointment is feasible. For emergency locksmith situations — a broken mortise lock case jamming a business door at 2 a.m. on a Sunday — we respond to Salt Lake County calls around the clock. The goal on every commercial call is damage-free entry and repair where possible, protecting the door and frame finish. We document the existing hardware, confirm pricing up front, and complete the work on-site. Need to request service right now? Call (704) 850-6756 — trained, insured technicians are dispatched from within Salt Lake County for the fastest possible response.

Pro Salt Lake City Locksmith is built around a mobile-first model — no storefront waiting room, no drop-off counter. When you call, a dispatcher confirms your address, the nature of the job, and any relevant details about the existing hardware. A technician already in Salt Lake County routes to you directly. We serve the full county footprint: Salt Lake City, West Jordan, Sandy, South Jordan, Draper, Midvale, Murray, Taylorsville, West Valley City, Holladay, Millcreek, Cottonwood Heights, Herriman, and surrounding communities. We also field calls from visitors and travelers who encounter lock problems near areas like the airport corridor on North Temple or along I-15 business corridors. Although our roots are Salt Lake County, UT, callers sometimes ask about Serving Utah County, UT locations just to the south — we are happy to discuss coverage on a case-by-case basis when you call.

The mobile SOS mobile locksmith approach means our technicians arrive with the tools, parts, and knowledge to handle rekeying and door knob lock replacement in a single visit the vast majority of the time. There are no hidden fees for coming to your location — travel distance is one of the transparent factors communicated when we confirm your up-front quote. Whether it is a straightforward lock door knob swap on a bedroom door or a full exterior hardware update including a mortise lock cylinder rekey on a commercial building, the process is the same: arrive, assess, quote, complete, test, done. Fast locksmith service 24/7 in your location is not a marketing phrase for us — it is the operating model we run every day of the year.

A rekey or replacement is only the beginning of a good access control habit. Once new hardware is in place, we recommend limiting the number of key copies in circulation, storing a spare with a trusted contact rather than under a doormat (a location that, frankly, every experienced technician has seen used as a hiding spot), and periodically testing all exterior locks for smooth operation. Worn springs inside a knob lock can make a key feel like it is working when it is actually operating on reduced engagement — a condition that accelerates wear and can eventually cause a lockout. A quick annual inspection by a trained technician catches these issues early. Salt Lake County winters, with freeze-thaw cycles along the benches of the Wasatch Front, are particularly hard on exterior lock mechanisms; lubricant displacement and latch corrosion are common by late February. If you notice stiffness or resistance when turning a key, call before the mechanism fails rather than after.