Door Knob Lock Installation

Replacing a door knob with lock and key sounds simple on the surface, but the details matter. Our technicians first assess the door's backset — typically 2-3/8 inch or 2-3/4 inch — the cross-bore diameter, the door thickness, and whether the existing prep work is compatible with the new hardware. A mismatch in any of these measurements means the latch won't align with the strike plate, and the door either won't close fully or won't lock securely. We carry a wide selection of Schlage and Kwikset keyed entry knobs so we can match the right unit to your door on the spot.

Beyond standard cylindrical knobs, many Stone Mountain homes and storefronts along Main Street use a mortise lock body recessed into the door's edge. A mortise lock is a far more robust mechanism than a cylindrical knob lock — it integrates the latch, deadbolt, and sometimes a privacy button into a single steel pocket set into the door. Our team is equally experienced with mortise lock installation, replacement, and re-keying, making us a go-to resource whether you're upgrading a historic bungalow near the Village or outfitting a commercial suite that needs a true commercial locksmith grade solution.

Not every door knob with lock needs a keyed cylinder. Interior doors — hallways, closets, connecting rooms — are usually best served by a passage set that turns freely from both sides, or a privacy knob that locks from inside with no key required. Exterior doors, rental units, and any door facing a shared corridor need a full keyed entry set, and in higher-traffic or higher-risk locations a mortise lock or a deadbolt added above the knob gives a meaningful second layer of protection. Our technicians walk you through the options, explain the trade-offs in plain language, and install whatever configuration makes the most sense for how you actually use the space.

For property managers overseeing multiple units around Stone Mountain's apartment corridors or commercial strips, we also offer re-keying services that let multiple locks operate on a single master key — a huge convenience when staff turnover happens or a tenant moves out. Re-keying is almost always the smarter first step before full replacement, and our mobile setup means we can re-key an entire building's worth of knob locks in one visit without disrupting your day more than necessary. If you're ready to schedule or just want a same-day assessment, call (770) 464-5766 and we'll dispatch a technician to your location.

Stone Mountain's commercial corridor sees a wide variety of door hardware — from standard cylindrical knobs on office interior doors to full mortise lock assemblies on storefronts that need to stand up to constant daily use. A mortise lock's strength comes from its pocket-set design: because the lock body is recessed into the door stile rather than surface-mounted, there's far more wood or metal surrounding the mechanism, making forced entry significantly harder. For any business operating as a commercial locksmith client — retail, medical, property management — we stock mortise lock bodies, trim rings, lever handles, and cylinders compatible with the most common door preparations found in DeKalb County commercial construction.

Our commercial locksmith work also covers panic hardware alignment, electric strike installation, and access control cylinder replacement on doors where a simple door knob lock is no longer adequate. Every job is performed by experienced technicians who understand the liability exposure that comes with a door that doesn't secure properly, and we always confirm the final configuration is functioning correctly before we leave the site. There are no surprise charges — the price we quote before work begins is the price on the invoice.

When someone is locked out or calls for an emergency locksmith at 2 a.m., two things matter: speed and legitimacy. Our mobile units are staged to reach Stone Mountain and surrounding DeKalb County neighborhoods quickly, and our technicians are trained to verify ownership or authorized access before performing any lock work — no exceptions. Proof of identity typically means a government-issued photo ID matching the property address, a lease agreement, or in a commercial setting a business card plus ID. We ask these questions to protect our customers and the community, and any reputable locksmith will do the same.

It's worth noting that searching online for how to pick a door knob lock or how to pick a lock door knob is understandable when you're frustrated — but attempting to pick or bypass your own lock without training risks damaging the cylinder, the door prep, or the latch mechanism in ways that turn a simple lockout into a costly replacement. The safer, faster move is to check for a spare key with a trusted neighbor, try any secondary entrance, and then call a professional if those options fail. Our emergency locksmith team is available around the clock at (770) 464-5766 — we answer every call live, 24/7, and we get to you without you having to touch the hardware.

Customers often ask what a door knob lock installation or mortise lock replacement will cost, and the honest answer is that several variables shape the final number. The type of hardware matters most — a basic passage knob costs far less than a heavy-duty mortise lock body with a new cylinder. Time of day is a factor, since after-hours and holiday emergency locksmith calls involve different labor considerations. Travel distance from our nearest unit to your address in the Stone Mountain area affects the service call component, and the condition of the existing door prep — whether the bore is clean, the strike plate is properly mortised, and the door frame is square — determines how much labor time the installation actually requires. We assess all of these before quoting, and we communicate the exact total before any work begins so there are no surprises when the job is done.