Deadbolt & Door Knob Lock Installation

There is no single flat rate because the final price depends on the type of hardware you're installing (a standard cylindrical deadbolt differs significantly from a mortise lock system), the grade and brand of the lock, whether it's a standard appointment or an emergency call, and your location relative to our team. Tenafly Locksmith Corp always confirms the exact price with you before any work begins — no estimates that shift once the job is underway.

A call-out fee is a charge some services apply just for sending a technician to your location, separate from the labor and parts cost. When you call us at 201-425-6211, we discuss all costs up front so you understand exactly what you're paying for before we arrive. There are no hidden fees added to your bill after the work is done.

No reputable locksmith service offers free lock changes. Hardware, labor, and the cost of operating a 24/7 mobile service are all real expenses. If you encounter an offer framed that way, look closely at what's actually included — there are often undisclosed fees tied to parts, service calls, or lock grades. Our commitment is to transparent, up-front pricing so you're never caught off guard.

A door knob with lock uses a spring-activated latch that can sometimes be manipulated by applying lateral pressure to the door — it's designed primarily for convenience, not as a primary security barrier. A deadbolt uses a solid steel bolt that requires direct key rotation to retract, making it far more resistant to forced entry. Most security professionals recommend having both on any exterior entry door: the knob lock handles day-to-day latching, and the deadbolt provides the real security layer. Our technicians can assess your current setup and recommend the appropriate combination for your specific door and frame.

Yes — smart lock installation is a service we perform regularly on Tenafly-area homes. The process involves more than just swapping hardware: we check your door's backset measurement, thickness, and bore hole compatibility before any installation begins, since smart locks have specific requirements that vary by model. We also handle the initial programming, pairing with the app or keypad, and make sure the door closes and latches correctly with the new unit in place. If your existing deadbolt prep work is compatible, smart lock installation can often be done in under an hour.

If your door's edge has a large rectangular pocket already cut into it — typically about an inch wide and several inches tall — it was designed for a mortise lock, and installing a standard cylindrical deadbolt in that door is not the right solution. Mortise lock systems are common on older homes, quality wood entry doors, and many commercial doors. They offer superior resistance to spreading and kick-in attacks because the lock body is protected within the door itself. If you're not sure what your door requires, our technicians can assess it on-site and explain the options clearly before any work begins. Call 201-425-6211 and we'll come to you.