Skip to content
Julian's Locksmith

Fullerton, Orange County

Residential Lock Replacement in Fullerton

Short answer: Residential lock replacement in Fullerton means removing worn, damaged or outdated home locks and fitting new hardware to the existing door prep. Julian's Locksmith brings Grade 1 and Grade 2 deadbolts, knobs, levers and handlesets to your house, matches backset and finish, keys every new lock to one key, and quotes before starting. Call (951) 903-3193.

Residential Lock Replacement in Fullerton, CA — Replacing a damaged lock after a break-in

The most common surprise in a do-it-yourself lock swap happens halfway through: the new latch is too long, the deadbolt screws don't line up with the old holes, or the handleset grip leaves a bare screw hole above it. Doors are drilled to specific measurements, and replacement hardware has to match them. Before we recommend a lock for your home in Fullerton, we measure the backset, bore, edge preparation, door thickness and, for handlesets, the spacing between mounting holes. Matching those numbers means the new lock goes in cleanly, the old marks stay hidden, and the strike lands where the bolt expects it. Call Julian's Locksmith at (951) 903-3193 if you'd like the fit checked before you buy.

How this works in Fullerton

Lock grades offer a fair way to compare hardware that looks the same in the package. The ANSI/BHMA standards test bored locks and deadbolts for cycles of use, resistance to forced entry and finish durability, then assign Grade 1, 2 or 3. Grade 3 is the minimum residential level and common on builder hardware. Grade 2 suits most residential doors and is what many mainstream home brands offer. Grade 1 hardware, built to commercial-level tests, is a worthwhile choice for the main entry and for any door hidden from the street. BHMA also publishes a residential rating that scores security, durability and finish separately, from A up to AAA, which helps when a lock is strong but its finish is ordinary. Grades only describe the lock, though. A Grade 1 deadbolt in a jamb held by a thin strike and short screws is only as strong as that strike. That's why every residential lock replacement we do includes a look at the frame, and usually a reinforced strike with long screws that reach the wall framing.

How we can help in Fullerton

  • Deadbolt replacement. Choosing between single- and double-cylinder deadbolts is a safety decision as much as a security one. A double-cylinder lock needs a key inside, which can slow an exit in an emergency. We usually recommend single-cylinder deadbolts plus glass reinforcement near sidelights, and we explain the tradeoffs if you're considering hardware keyed on both sides.
  • Replacing a deadbolt with a smart or keypad lock. Retrofit-style smart locks such as August replace only the interior side of an existing deadbolt and keep your outside key. Full replacement units swap the whole deadbolt, keypad included. We help you choose based on whether you want codes at the door, whether the exterior faces hard afternoon sun, and how the lock behaves when batteries run low.
  • Patio and French door hardware replacement. Older patio doors sometimes have handles and latches that are no longer made. Rather than replacing the whole door, we look for current hardware designed to fit the same cutouts, use adapter plates where needed and add a keyed lock if the door never had one. That keeps an otherwise good door in service.
  • Keying the new locks. Replacement is the best time to get every exterior door on one key. We choose hardware that shares a keyway, such as Kwikset KW1 or Schlage SC1, and key each new lock to the same combination before installation. If you prefer to keep your current key, we can usually pin the new cylinders to match it.
  • Replacement after forced entry. When a door has been kicked or a cylinder wrenched, the lock, strike and jamb are often all damaged. We remove the broken hardware, rebuild or reinforce the frame, install new locks suited to the door, and key them differently from the old ones so any keys that went missing in the incident stop working.

How Fullerton shapes the job

In apartments, lock replacement is the property owner's decision, with an important exception: in certain situations involving a protective order or similar documentation, a landlord must change the locks within 24 hours of a tenant's written request (Civil Code §1941.5 and §1941.6). Owners and managers use us to replace worn unit entry locks with rekeyable hardware, keep units on the building's key system and make sure main entry deadbolts meet the state's rental standard.

Commuters want locks that work fast and need no thought at 5:30 in the morning. Popular replacements include a keypad deadbolt on the garage entry so you can lock up without keys, auto-lock settings, and front and back doors on one key. We can schedule a residential lock replacement early in the day, since we start at 6:30 a.m. every day, before you head out on SR-91.

Owners of student rentals replace locks more often than most, because keys disappear at the end of every lease. Rekeyable hardware or keypad deadbolts with codes that change between tenants cut the cost of turnover. For shared houses, we can fit bedroom doors with keyed entry levers that always open freely from inside, while the front door runs on a common key, if the lease allows.

Situations this covers

  • For example, a couple buys a 1980s house near Fullerton Transportation Center with four exterior locks from three brands, including a keyed knob with no deadbolt on the side door. Two of the locks are cracked inside. We replace all four with Grade 2 levers and Grade 1 deadbolts in one keyway and finish, key them alike, and add a deadbolt to the side door so every entry matches.
  • A landlord turning over a duplex off Orangethorpe Avenue finds the knob sets on both units worn loose and the deadbolts throwing barely half an inch. We replace each unit's exterior locks with rekeyable Grade 2 hardware and deadbolts that meet the 13/16-inch minimum throw California sets for rental deadbolts, key each unit separately and leave the owner a written key record.
  • A typical remodel call: owners repainting their front door want to replace a tarnished polished-brass handleset with a matte black one. The new set they like uses different grip-hole spacing, which would leave a bare hole near the top. We find a matte black set from a brand that matches the old spacing, install it with a matching deadbolt and key both to the existing house key.
  • A typical garage-entry upgrade: the door from the garage into the laundry room has a builder knob that locks with a push button and no deadbolt. The family wants better security without more keys. We install a keyed lever and a deadbolt keyed to the front door, set the latch to catch with the door's closer, and make sure the strike screws reach solid framing.

Step by step with Julian's Locksmith

  1. Inventory and goals. Some calls are simple: one broken deadbolt, replace it today. Others are whole-house projects with finish choices and smart locks. Either way, the first conversation sets expectations about which locks we carry, which need ordering, and whether you'd rather buy hardware yourself and have us install it.
  2. Measure the door prep. Older and custom doors don't always follow the modern pattern. We check for mortise pockets, unusual backsets, oversized holes from previous hardware and thick doors that need extension kits. Catching those details before anything is ordered prevents the classic mistake of a lock that doesn't fit the door it was bought for.
  3. Choose the hardware. With measurements in hand, we recommend specific hardware for each door: grade, style, finish and keyway. We carry common residential models and can order others. If you've already bought locks, we check them against the door prep and tell you honestly whether they'll fit and how they'll hold up.
  4. Quote, approval and verification. You get an itemized quote: hardware for each door, labor, any strike or frame work, and keying. Nothing starts until you approve it. Because we're changing locks, we confirm you own the home or have the owner's authorization; tenants need written landlord approval unless state law gives them a specific right to change locks.
  5. Remove and install. Doors that need new holes get them drilled with proper jigs so the lock sits square. Old holes the new hardware doesn't cover are filled and can be finished. For smart locks, we also mount the interior unit, install batteries and pair the lock with your app before moving to the next door.
  6. Key, test and hand over. We key every new cylinder to your chosen key, test each key in each lock, and cycle every lock with the door open and closed. You get the agreed number of keys plus a note listing the brand, keyway and finish, so future copies or additions match. We can take the old hardware away with us.

How we quote the job

  • Hardware grade and brand. Grade 1 deadbolts and solid, premium entry sets cost more than Grade 2 or builder-grade hardware, and decorative brands and special finishes add more. We usually suggest spending where it matters most, on the main entry deadbolt and its strike, and choosing solid mid-grade hardware for less exposed doors.
  • Number of locks and keying. Whole-house replacements involve the most hardware but the lowest cost per door. If the budget is tight, we can replace the exterior locks now, keyed alike, and handle interior hardware later in the same finish, so the house still matches once everything is done.
  • Reinforcement, travel and timing. Reinforced strikes, long screws and edge wraps add modestly to a replacement and make a large difference in kick resistance. Damaged jambs after a break-in add more. We list reinforcement options as separate line items, so you can see exactly what each one adds before deciding.

Every job gets a clear quote before any work starts. Call (951) 903-3193 with the details and we'll tell you what to expect for your situation in Fullerton.

Mistakes to avoid

  • Choosing hardware on looks alone. Some attractive lever and handleset lines use soft die-cast parts and weak springs that sag within a few years. Check the ANSI/BHMA grade on the package and the finish rating before committing, especially for exterior doors that get daily use.
  • Over-tightening the through-bolts on new hardware. Cranking the screws distorts the chassis, binds the latch and can crack a die-cast housing before the lock is a week old. Trim screws should be snug, with the knob or lever still returning freely afterward.
  • Buying a lock before measuring the door. Backset, bore, thickness and faceplate shape all have to match, and a mismatch means new holes, a sloppy fit or a return trip. Measure first, or have a locksmith look before you buy, especially on older or custom doors.

What to do before we arrive

  • Measure before you shop: the distance from the door edge to the center of the knob hole is the backset, usually 2-3/8 or 2-3/4 inches. Most new locks adjust for both, but confirm. Measure door thickness too; anything over 1-3/4 inches may need an extension kit from the manufacturer.
  • If you're replacing interior hardware, count privacy and passage doors separately. Bathrooms and bedrooms usually get privacy sets, while hallways and closets get passage or dummy sets. Ordering the right mix the first time saves returns and keeps the finish consistent throughout the house.
  • Hold on to the old lock's key until the new installation is finished and tested. If you're keying the new locks to your existing key, we need a good copy to work from, ideally the least worn one you have, so dig the original out of the drawer.
  • Spend the most on the main entry deadbolt and its strike. That's the lock most likely to be tested by force. A Grade 1 deadbolt with a reinforced strike and long screws protects you more than upgrading every interior knob in the house to a premium brand.

Service in Fullerton

Fullerton is about 55 miles from our San Bernardino base, roughly 60 minutes in light traffic via I-215 South to SR-60 West through Jurupa Valley, Ontario and Chino. When you call, you get an arrival estimate based on where the technician is and the traffic at that moment.

Traffic matters more than mileage. We check conditions on SR-57 and its connecting routes before quoting you a time, and we don't pretend a long drive through heavy congestion is a short one.

About Fullerton: Cal State Fullerton opened in 1957 as Orange County State College on former orange groves and enrolled more than 43,000 students in fall 2024.

NeighborhoodsLaguna Lake, Amerige Heights, Golden Hill, Downtown Fullerton, SOCO District, East Coyote Hills
ZIP codes92831, 92832, 92833, 92835
Main routesSR-91, SR-57, I-5, SR-90
From our San Bernardino baseabout 55 miles via I-215 South to SR-60 West through Jurupa Valley, Ontario and Chino, then SR-57 South (Orange Freeway) through Diamond Bar and Brea to the Imperial Highway, Yorba Linda Boulevard, Nutwood Avenue or Chapman Avenue exits; SR-91 West through Corona and the Santa Ana Canyon is the alternate for south Fullerton off Harbor Boulevard

Home lock work in Fullerton?

Call (951) 903-3193 with the address and a quick description of the doors and locks involved. We'll quote the job before any work starts.

Frequently asked questions

Can I keep my current key with new locks?

Often. If your current key uses a common residential keyway and is in decent shape, we can pin the new cylinders to match it. If it's badly worn, we decode it and cut fresh keys at the correct depths. Keep in mind that keeping the old key also keeps whatever copies are out there, so it isn't ideal after lost keys or a move.

Should I replace my deadbolt with a smart lock?

It depends on how you use the door. Keypad and smart deadbolts work well on garage entries, rentals and homes where family members come and go, since codes replace spare keys. They do need batteries and a well-aligned door. We help you choose between full replacement units and retrofit models that keep your outside key, and we reinforce the strike either way.

Can you replace an old mortise lock?

Yes. When an original mortise lock can't be repaired, we look first for a modern mortise lock that fits the existing pocket and trim holes, which preserves the door's look. If none fits, conversion plates let a standard bored lock and deadbolt mount over the old pocket. We avoid recutting solid older doors whenever a cleaner option exists.

Will you install locks I bought myself?

Yes. We check the hardware against your door before starting and tell you if anything won't fit, such as the wrong backset or a handleset with different hole spacing. If the locks need keying alike, we can rekey them on site. When you supply the hardware, returns and product defects are handled through the store or the manufacturer.

What lock rules apply when replacing locks on a California rental?

Civil Code §1941.3 requires landlords to provide operable deadbolts on main swinging entry doors and working window locks, and it defines a deadbolt by a minimum throw of 13/16 inch. Under Civil Code §1941.5 and §1941.6, a landlord must change the locks within 24 hours of a tenant's written request in certain protective-order situations. Rekeying or replacing locks between tenants is also widely recommended.

Can all my new locks work with one key?

Yes, as long as they share a keyway. Schlage and Kwikset, for example, use different keyways, so we choose hardware with compatible cylinders and key every new lock to the same combination during installation. Some decorative brands offer cylinders in common keyways, which lets premium hardware share a key with everything else. One key for the front, back, side and garage entry is the usual goal.

How far is Fullerton from your base?

Fullerton is about 55 miles from our San Bernardino base, roughly 60 minutes in light traffic. Arrival time depends on traffic and on the job the technician is finishing, so we give you an estimate on the phone before you commit.

Residential Lock Replacement in nearby cities

Call now(951) 903-3193

Daily 6:30am–11:30pm