Kwikset Deadbolt Installation in Los Angeles, CA | Strongbox Lock & Safe Co.

Kwikset Deadbolt Installation: The Los Angeles Owner’s Guide

Kwikset deadbolt installation in Los Angeles typically runs $180-$340 for a standard single-cylinder replacement, including the lockset, labor, and door prep if needed. We stock Kwikset 660, 980, and SmartKey series on every truck, and most installs are finished in under an hour. Same-day service is available across Los Angeles, from the Valley to the Westside.

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Most homeowners realize their deadbolt needs attention when the key starts catching, the thumb turn grinds, or the bolt no longer throws fully into the jamb. Sometimes it’s a slow wear over years; sometimes it’s a single sticky morning that never gets better. Either way, a deadbolt that doesn’t seat fully is a deadbolt that isn’t doing its job.

Which Kwikset Models This Applies To

Kwikset has produced deadbolts under several series names, and the right match depends on what’s currently on your door. The Kwikset 660 remains the most common single-cylinder deadbolt in Los Angeles tract homes built from the 1980s through the mid-2000s. The Kwikset 980 and 985 series are the newer ANSI Grade 1 upgrades, often found in homes that have had security updates or were built after 2010. SmartKey models, identifiable by the small slot next to the keyway, allow rekeying without disassembly but require exact replacement to maintain that function.

To identify your model, check the face of the deadbolt for stamped numbers, or remove the interior thumb turn and look for a paper label inside. The backset, the distance from the door edge to the center of the cylinder, is almost always 2-3/8 inches in Los Angeles residential doors, though older Craftsman homes in neighborhoods like Highland Park occasionally have the 2-3/4 inch commercial backset. We carry both on the truck.

OEM Kwikset parts guarantee SmartKey compatibility and finish matching. Quality aftermarket equivalents from Arrow and Defiant exist, but we’ve seen finish mismatches and slightly looser tolerances in the tailpiece connection. For a lock you touch every day, we usually recommend staying with genuine Kwikset or stepping up to a comparable Schlage or Medeco if the door is your primary entry point.

Strongbox Lock & Safe Co. is an independent service provider and is not affiliated with Kwikset Corporation.

Signs Your Kwikset Deadbolt Installation Is Failing

• The key sticks or requires jiggling. Worn pin tumblers inside the cylinder are no longer aligning cleanly with the key profile. In Los Angeles, fine dust from Santa Ana wind events accelerates this wear by acting as grit inside the mechanism.
• The thumb turn spins without moving the bolt. The tailpiece connecting the interior and exterior halves has either cracked or slipped its cam. This failure is more common in Kwikset models with composite tailpieces installed before 2015.
• The bolt doesn’t fully extend into the strike plate. Door frame settling, common in hillside homes from Silver Lake to the Hollywood Hills, shifts the jamb alignment. The lock itself may be fine, but the installation needs adjustment or a relocated strike.
• The deadbolt is loose in the door, with visible play. The mounting screws have stripped the door material or the cross-bore has enlarged from repeated stress. Solid-core doors hold better than hollow-core, but neither lasts forever with a loose fit.
• You’ve had a break-in attempt and the cylinder turns freely. The internal plug may have been twisted out of alignment. Even if the lock still functions, the security integrity is compromised and replacement is the only sound option.

Replacement Cost & What’s Included

What drives the range: the specific Kwikset series you choose, whether the door needs new cross-bore drilling, and if the strike plate requires relocation due to frame shift. We quote flat before we drive. The price on the phone is the price on the invoice. Every install carries our 90-Day Done Right Promise, backed in writing with no extra paperwork.

Seniors and veterans receive a permanent 5% discount. If your repair total exceeds $250, ask about our $50 standing offer.

DIY or Call Us?

There’s honest work a homeowner can do here. You can confirm the backset measurement, check whether the strike plate is simply loose, and verify the model number from the packaging or interior label. A drop of dry graphite in the keyway can temporarily ease a sticky cylinder.

Where DIY goes wrong: drilling a new cross-bore without a door jig leaves splintered edges and misaligned holes. The tailpiece angle between interior and exterior halves must be exact; off by a few degrees and the mechanism binds or fails in weeks. And if your door is solid wood or steel, the wrong bit choice ruins the door face. We’ve been called to more than a few Los Angeles homes where a well-intentioned Saturday project became a door replacement.

Tell me what you need. We will give you a price before we move, and we will stand behind the work when it is done.

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