Deadbolt installation in San Dimas, CA

What does deadbolt installation involve?

A deadbolt is the lock that does the real work on an exterior door. The knob or lever latch on most doors is held in by a spring and can be pushed back with a thin piece of plastic or a firm shove. A deadbolt has no spring in the way. When you turn the key or thumbturn, a solid steel bolt extends into the door frame and stays there until you retract it. That is why a door with a properly fitted deadbolt resists forced entry in a way a latch alone never will.

Installation sounds simple, and the hardware itself is. The craft is in the fit. The bore holes have to be the right size and square to the door. The bolt has to land in the center of the strike. The strike plate has to be anchored into the framing, not just the thin trim around the jamb. A deadbolt that is a sixteenth of an inch off will feel gritty, drag, and eventually refuse to throw on a hot afternoon. Most of the complaints we hear about deadbolts are really complaints about alignment.

This page covers installing a new deadbolt where there is none, replacing a worn or damaged one, and converting a single-cylinder deadbolt to a double-cylinder model when the door and the situation call for it. If your door already has good hardware and you only need different keys, that is a different job, and you can read about lock rekeying in San Dimas before you spend money on new hardware you may not need.

When does a San Dimas door need deadbolt replacement?

Some people call because they have no deadbolt at all. More often the deadbolt is there but has stopped doing its job. Here are the situations that most often lead to a deadbolt replacement.

Replacement is not always the answer. A deadbolt that sticks only in summer may need the door or strike adjusted, not new hardware. A key that was lost may only call for new pins. Part of our job is telling you which of those you are dealing with before anyone drills anything.

• The bolt drags, grinds, or only extends if you lift or push the door while turning the key.
• The key turns freely but the bolt does not move, which usually means a broken internal part.
• The cylinder is loose, spins in the door, or the thumbturn wobbles on the inside.
• The door was kicked or pried and the strike plate or jamb is cracked, splintered, or pulled out.
• You moved into a place where you do not know who holds a key, and the existing lock is worn out as well.
• The finish has pitted or the key has become hard to insert and withdraw after years of use.
• The door only has a keyed knob and you want a real second layer of protection.

Single-cylinder or double-cylinder: which deadbolt should you choose?

A single-cylinder deadbolt has a key on the outside and a thumbturn on the inside. It is the standard for most homes because you can exit instantly without searching for a key. A double-cylinder deadbolt takes a key on both sides. Its purpose is to stop someone from breaking a nearby window or glass panel, reaching in, and turning a thumbturn to open the door.

So a double-cylinder deadbolt makes sense in specific cases: a door with a glass panel or sidelight within arm's reach of the lock, or a door where you want the inside secured against someone walking out with your belongings. The trade-off is serious. In a fire or any emergency, you need a key in hand to leave through that door. Many building and fire codes restrict keyed-both-sides locks on exit doors, and rental and multi-unit buildings often have their own rules. Before we install a double cylinder deadbolt, we will ask about the door, the glass, who lives there, and how people exit, and we will tell you plainly if a different setup is the safer choice.

Often there is a better answer than a double cylinder. A single-cylinder deadbolt with a longer bolt, a reinforced strike, and security film or replacement glass near the lock solves the same problem without trapping anyone inside. If you want more than a standard grade of hardware, our page on high-security locks explains what pick-resistant and drill-resistant cylinders add. And if you would rather skip the key altogether on the inside or outside, look at smart lock installation, since many smart locks are built around a deadbolt anyway.

How we install a deadbolt, step by step

Every door is a little different, but the work follows the same order. We do it this way because skipping a step shows up later as a lock that sticks or a strike that works loose.

1. We look at the door first: thickness, material, condition, existing holes, and whether the frame is solid, split, or out of square.
2. We talk through options with you: single or double cylinder, finish, keying, and whether you want it keyed to match other locks on the property.
3. We measure the backset (the distance from the door edge to the center of the lock) so the new deadbolt lines up with the existing latch or the correct standard spacing.
4. For a replacement, we remove the old deadbolt and check the bore holes. For a new install, we mark and drill the face bore and the edge bore with the correct bits, keeping them square to the door.
5. We fit the latch, the cylinder, and the interior assembly, and set the bolt so it moves freely before it ever meets the frame.
6. We mortise and set the strike plate in the jamb so the bolt lands dead center, and we use long screws that reach into the framing behind the jamb, not just the trim.
7. We test the lock repeatedly with the door open, then closed, then under normal use, checking that the bolt throws fully without lifting or pushing the door.
8. We hand you the keys, show you the thumbturn or second cylinder, and point out anything about the door itself, such as a loose hinge or a warped edge, that could affect the lock later.

What affects the cost of deadbolt installation?

We do not quote numbers on a web page because the same words describe very different jobs. What we can do is tell you honestly what moves the cost up or down, so there are no surprises when we give you a figure on the phone or at the door.

If you are comparing options, the usually more economical route is a straightforward replacement into existing, correctly sized holes with a standard single-cylinder deadbolt. Costs rise when the door needs work before it can take a lock.

• New install versus replacement: drilling fresh bore holes takes more time than swapping hardware into holes that are already right.
• Grade and type of deadbolt: a basic residential deadbolt, a heavier-duty model, and a high-security cylinder are very different products.
• Single versus double cylinder, and any code considerations that come with it.
• Door material and condition: solid wood, hollow-core, metal, and fiberglass all drill differently, and a damaged door may need repair first.
• Frame and strike repair: a split jamb or pulled-out strike must be reinforced or repaired for the new lock to mean anything.
• Keying: matching existing keys, keying several doors alike, or setting up a new key system adds work.
• Quantity: several deadbolts in one visit are handled more efficiently than a single call for each.
• Timing and distance: after-hours service and travel to your address factor in, and we will explain how when you call.

Deadbolts in Via Verde, the canyons, and along Arrow Highway

San Dimas is mostly 1960s through 1980s suburban tracts, and that tells us something useful before we reach the door. Original doors and frames from those decades were drilled for the hardware of their day, and after forty or fifty years of paint, heat, and settling, the jamb is often not where it was. In ZIP 91773, a lot of our deadbolt work is exactly this: the lock is fine but the door has moved, so the fix is as much about the strike and the fit as the cylinder.

In the Via Verde planned community, with its townhomes, condos, and golf-course homes in the southwest near Puddingstone Reservoir, a common situation is a home that changed hands and needs its entry doors made secure. If the existing deadbolt is in good shape, a rekey can be the lighter-cost option. If it is worn, corroded, or an unknown brand, a new deadbolt in the same bore is quick and clean. In townhomes and condos, check whether your association has rules about exterior hardware finish before you choose one.

Up in the San Dimas Canyon area and toward Horsethief Canyon, larger lots and equestrian properties mean more doors than a typical house: barns, tack rooms, workshops, and side entries far from the main house. These often need a deadbolt on a heavy or rough door, and sometimes a gate lock as well, which we cover separately under gate lock repair. Along Arrow Highway, several mobile home parks have lighter doors and thinner frames, where the right deadbolt and a properly reinforced strike matter more than the price tag on the box.

Downtown along Bonita Avenue, older storefronts carry legacy commercial hardware that does not always accept a standard residential deadbolt. If you are looking at a shop door, storefront lock repair is the better starting point, since commercial doors have different rules for exits.

How do San Dimas heat and canyon dust affect a deadbolt?

San Dimas sits inland, and summer highs run well above what the coastal basin sees. Wood and metal doors both expand in late-summer heat, and a deadbolt that threw easily in April can start to bind by August. The usual cause is the bolt rubbing the edge of the strike hole, not a failing lock. If we align a deadbolt with a little clearance and a properly set strike, the lock is much less likely to complain when the door swells.

Canyon winds also carry dust into exterior hardware, especially on doors facing north toward the foothills. Dust in a key cylinder acts like fine grit in a gearbox. It wears the pins, stiffens the key, and in the worst case jams the lock. Keep the cylinder clean, use a dry graphite or Teflon-based lubricant made for locks instead of oil, which attracts dust, and tell us if your key has begun to stick, because that is usually the first sign.

If you ever find yourself outside with a bolt that will not move or a key that will not turn, call us and we can talk it through. A stuck deadbolt on a hot day may need adjustment, and if you are locked out entirely our page on house lockouts explains how we handle that.

Why call Wilshire Lock & Key for a deadbolt?

There are plenty of ways to get a deadbolt installed. Here is why people call us, stated plainly.

San Dimas is about 40 miles from our Westwood storefront, and we will tell you honestly what the trip involves when you call instead of promising something we cannot control.

• We have been in business since 1987, and deadbolts are among the first jobs a locksmith learns and the ones we have done the most.
• We have a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans, so there is a real place behind the phone number.
• You deal with one company. When you call (213) 577-1366, there is no dispatch middleman reselling your call to whoever picks it up.
• David is the owner and lead technician, and he oversees the work our company does.
• Our phones are answered 24 hours a day, 7 days a week, year-round, including holidays.
• We serve 140 cities across Los Angeles and Ventura counties, so San Dimas is part of our regular service area, not a stretch.

What should you ask any locksmith before they start?

California requires locksmith companies to hold a license issued by the Bureau of Security and Investigative Services (BSIS), known as a Locksmith Company (LCO) license. Ask any locksmith for that license number before work begins, whether it is us or anyone else. A legitimate company will give it to you without hesitation.

A few other things are worth asking. Ask what the total cost covers before the work begins, not after. Ask whether the deadbolt will be keyed the way you want. Ask what happens if the door or frame needs repair first. And be cautious of anyone who wants to drill out a lock that could simply be picked, adjusted, or rekeyed, since that is a sign they are selling hardware and not solving your problem.

If you have questions before you decide, call us or use our contact page. We would rather answer a question honestly than win a job by guessing.

More locksmith help in San Dimas

• Change Locks in San Dimas
• Gate Lock Repair in San Dimas
• High Security Locks in San Dimas
• Key Duplication in San Dimas
• Lock Installation in San Dimas
• Lock Rekey in San Dimas
• All services in San Dimas

Deadbolt Installation near San Dimas

• La Verne
• Glendora
• Covina
• Pomona
• Walnut
• Claremont