Kwikset Deadbolt Installation Nationwide | Preston Locksmith & Security

Kwikset Deadbolt Installation: The Los Angeles Owner’s Guide

Kwikset deadbolt installation in Los Angeles typically runs $140 – $230 for a standard single-cylinder deadbolt, parts and labor included, and we can usually get a tech to your door the same day. That price assumes a straightforward replacement: pulling the old deadbolt, fitting the new one, and adjusting the strike plate so the bolt seats cleanly. Most owners call us after the thumb turn starts grinding or the key only works when you jiggle it just right, and by that point the fix is almost always a swap, not a repair.

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The deadbolt is the lock that actually stops a kick-in. When it fails, you don’t have a secondary lock anymore, you have a knob protecting your door. That’s why we carry Kwikset deadbolts on every truck and treat these calls as priority jobs. Kevin Yoon has been swapping Kwikset hardware across Koreatown, Silver Lake, and the Wilshire corridor long enough to know which models hold up in this city and which ones give up early.

Which Kwikset Models This Applies To

We install and service the full Kwikset deadbolt line: the 660 single-cylinder, the 980 double-cylinder, the SmartKey 909 and 991, the Signature Series Halifax and Juno, and the newer Halo touchscreen models. The easiest way to identify what you have is to look for the model number stamped on the bolt face plate or on the edge of the lock body itself. If it says “660” you have the budget workhorse. If it says “980” you have a double-cylinder, which requires a key on both sides, something worth knowing if you have kids or a window near the door.

One compatibility gotcha we see constantly: Kwikset’s SmartKey cylinders use a different internal sidebar than their standard pin-and-tumbler locks. A SmartKey deadbolt can’t be rekeyed the old way with pins; it rekeys by inserting the current key, turning a small tool, and inserting the new key. If you don’t know which cylinder style you have, send us a photo of the keyway before we come out, and we’ll tell you whether it’s a standard or SmartKey cylinder.

For the part itself, we recommend OEM Kwikset deadbolts for the SmartKey line, because aftermarket clones often have looser tolerances on the sidebar mechanism and bind after a year or two. For the standard 660 and 980, a quality aftermarket latch and bolt assembly works fine, but we stock Kwikset on the truck anyway. There’s no price advantage to aftermarket once you factor in a second service call when a cheap latch plate flexes.

Preston Locksmith & Security is an independent locksmith company and isn’t affiliated with Kwikset. We work on their hardware because it’s the most common deadbolt in this city. Simple as that.

Signs Your Kwikset Deadbolt Installation Is Failing

Deadbolts rarely fail all at once. They usually warn you for weeks or months first. Here’s what we hear from Los Angeles owners when the call comes in:

• The key turns but the bolt barely moves. The tailpiece connecting the cylinder to the bolt is stripped or worn. This is the classic Kwikset failure mode after five to ten years of daily use, and it won’t fix itself.
• The thumb turn spins freely without throwing the bolt. The internal clip that joins the thumb turn to the bolt tailpiece has snapped. You’ll feel zero resistance when you twist, and the deadbolt never actually locks.
• The bolt catches on the strike plate and needs a hip check to close. In older L.A. homes with settling foundations, the door slab shifts half a degree and the bolt no longer lines up with the strike. Sometimes it’s a realignment, but when the bolt itself is bent, it’s a replacement.
• The key only works one direction or needs a jiggle. This points to worn pins inside a standard cylinder, or a SmartKey sidebar that’s drifted out of spec. Most owners ignore this for a year, then call us the night it stops working entirely.
• The deadbolt works, but the lock feels loose in the door. Stripped screw holes or a broken mounting plate mean the whole assembly is riding loose. A deadbolt that wiggles is a deadbolt a crowbar beats in about ten seconds.

If you’re seeing any of these, don’t wait for a lockout to confirm it. The fix is cheaper at 2 p.m. on a Tuesday than it is at midnight on a Saturday.

Replacement Cost & What’s Included

Here’s the honest breakdown for Los Angeles. We don’t do teaser prices, and we don’t add a call-out fee when the tech arrives.

Every quote includes the part, the labor, the realignment, and a written guarantee on the work. You get the price before we dispatch anyone, and the number on your invoice matches the number on the phone. That’s the Relay Standard. If the install fails within a year, we come back free under the 365-Day Done Right Promise. No charge, no argument.

What drives the range? Door thickness, whether the existing bolt hole needs re-drilling, and whether you want a matching keyway with other Kwikset locks in the house. If we’re rekeying the new deadbolt to match your existing keys, that’s usually a flat $35 – $60 extra, and we’ll confirm that number on the phone before the tech leaves the shop.

DIY or Call Us?

A deadbolt swap looks easy on YouTube, and for a standard interior door with perfectly aligned holes, it can be. If you’re reasonably handy and the old deadbolt is a simple single-cylinder, you can do it in under an hour with a screwdriver and the new lock’s template.

Where DIY goes wrong in L.A. is the door prep. Older doors often need the bolt hole widened or the strike mortise deepened, and without a Forstner bit and a steady hand, you end up with a lock that binds. SmartKey deadbolts add another wrinkle: the rekeying process is specific, and if you do it wrong the cylinder locks into a dead position and won’t accept any key. You’ll then pay more for a tech to extract and replace the cylinder than you would have paid for the whole install.

Our position is simple: if the existing hole is clean and you’re confident, go for it. If the door is old, the hole is rough, or you have a SmartKey in play, call (409) 405-4485. We’ll give you the real price over the phone. Real price on the phone. Same price at the door. That’s it.

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