Marin County Lock Change and Door Hardware Upgrades
A lock change involves completely replacing every physical component of your existing lock. This process differs entirely from rekeying. Rekeying simply changes the internal pins of your current lock. A lock change removes the cylinder, lock body, and strike plate completely. We start with brand new components.
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Lock Replacement Requires Entirely New Door Hardware
Standard lock bodies in retail boxes follow specific North American door preparation sizes.
This standard requires a specific two and one-eighth-inch bore hole. It also requires a precise backset measurement. If your door falls outside these exact dimensions, standard locks will fail. They will not latch properly or align with the frame. This represents a door preparation issue, not a product defect.
Door Preparation Variations Across Marin County Homes
Our region features over a century of highly diverse architectural styles and door constructions.
Door dimensions do not remain consistent across older local neighborhoods. Historic homes in San Rafael and Mill Valley often feature non-standard backsets. The main bore hole might measure smaller than the modern requirement. A modern smart lock simply will not fit into that specific opening.
Newer residential construction in Novato typically utilizes standard door preparation dimensions. However, older doors in Tiburon and Corte Madera often require highly specialized hardware. Product boxes never disclose whether the hardware fits your specific door. The printed dimensions only describe the lock itself. We confirm these physical measurements during our initial assessment.
What We Measure Before Hardware Installation
Our technicians verify four critical door dimensions before recommending any replacement lock systems.
We check the backset, bore diameter, door thickness, and physical swinging direction precisely. The backset represents the exact distance from the door edge to the bore hole. We use a physical tape measure to confirm this distance. We never guess based on the previous lock.
Bore diameter matters immensely when upgrading to modern electronic smart locks. Many smart locks demand a large two and one-eighth-inch bore hole. We modify and enlarge these openings safely before installing the lock body. Door thickness dictates the exact length required for internal mounting bolts. If these bolts are too short, the hardware will never tighten securely.
ANSI Grade Ratings for Deadbolt Security
ANSI grade ratings officially certify exactly how physically durable your lock hardware is.
The American National Standards Institute classifies lock hardware into three distinct durability grades. Grade 1 represents the absolute highest commercial-level durability available today. This hardware safely survives hundreds of thousands of aggressive physical tests.
Grade 2 provides exceptional, heavy-duty residential protection. Grade 3 serves as basic, entry-level hardware typically found at home improvement stores. Upgrading a primary entry door to a Grade 1 deadbolt makes perfect sense. It provides a highly meaningful physical security upgrade for your family. We select hardware based precisely on your daily usage requirements.
Our Complete Lock Replacement Sequence
Every hardware replacement strictly follows a highly documented operational installation protocol.
We execute a precise sequence for every hardware upgrade. We confirm your exact door dimensions before sourcing any new lock. Our technicians arrive and carefully extract your existing hardware. We then assess the metal strike plate mounted on your door frame.
The new lock body might align differently than the old one. We reposition the strike plate to catch the new deadbolt perfectly. Finally, we cut and test all new keys directly on-site. We provide a strict 90-Day Workmanship Guarantee on all residential hardware installations.
Smart Locks and Strike Plate Alignment
We evaluate door settling and frame geometry before installing high-tech smart locks.
Initial Door Geometry Diagnostics
We check the physical gap between your door and the structural wood frame.
An uneven gap strongly indicates the door has settled over time. A settled door shifts the deadbolt's path relative to the strike plate opening. We address this structural shift completely before installing your new locks.
Professional Hardware Implementation
A standard deadbolt replacement on a prepared door takes under one single hour.
If your door requires bore enlargement for a smart lock, we modify it safely. We upgrade strike plate screws to three-inch fasteners as a standard practice. These longer screws anchor directly into the structural wall framing. This provides vastly superior strike plate strength against forced entry attempts.
Post-Installation Quality Testing
Our technicians thoroughly test every lock before the scheduled appointment is considered complete.
The deadbolt must throw fully without any physical resistance or grinding. The key must operate smoothly from both sides of the door. The strike plate must not bind the locking mechanism at all.
Mobile Dispatch Across the North Bay
We schedule lock replacement appointments rapidly across Marin County and the surrounding North Bay.
Tal-Niv Locksmith Services handles door hardware upgrades safely and professionally. We serve San Rafael, Novato, Mill Valley, Sausalito, Corte Madera, Tiburon, and every community within 20 miles of San Rafael. Our technicians operate securely under verified CA BSIS LCO 6831 credentials.
Our appointment model guarantees we arrive fully prepared for your specific door setup. Call 415-994-6776 to schedule your residential lock assessment today. Please mention your existing lock brand when speaking with our local dispatchers.
Recent Lock Change Jobs Across Marin County
Real photos from our technicians in the field.
Frequently Asked Questions
We provide clear answers regarding hardware upgrades and door preparation.