Westminster, Orange County
Double Cylinder Deadbolt Installation in Westminster
Short answer: Both cylinders are keyed alike, so one key works the lock from either side. Installation uses the standard 2-1/8-inch and 1-inch bores, but the interior cylinder needs clearance and a plan for where the key lives. Julian's Locksmith handles double cylinder deadbolt installation in Westminster, talks through exits and the key plan, and quotes before starting. Call (951) 903-3193.

Someone told you a double cylinder deadbolt is illegal. Someone else told you it's the only way to protect a glass door. Both are partly right. Building codes in California expect the required exit door of a home to open from inside without a key, so a double cylinder doesn't belong there. Other doors, such as a shop, a mudroom with another exit available, or an interior storage room, are a different story. Julian's Locksmith installs double cylinder deadbolts in Westminster where they're appropriate and talks you through the rules for the door you actually have. Call (951) 903-3193.
What to know first in Westminster
Four questions sort most double cylinder requests. First, is this a required exit, the door people would use in a fire? If yes, look for a different protection. Second, how close is the glass to the thumbturn? If an arm can't reach through a broken pane, a single cylinder is just as secure. Third, who is in the building: children, older relatives, guests, tenants who don't know the key plan? Fourth, can you protect the glass instead? Laminated glass, security film, polycarbonate inserts and decorative grilles all attack the weakness directly. When the answers favor a double cylinder, it's a sound tool for a workshop, an interior storage room or a mudroom with a second exit nearby. When they don't, we'll say so, install a strong single-cylinder deadbolt and explain the glass options. In Westminster, we talk this through before quoting. Either way, you leave with a lock that matches the door's real risks and a key plan everyone understands.
How we can help in Westminster
- Workshops, detached garages and outbuildings. Away from the main house, a door's biggest risk is a broken pane and a hand reaching in. We fit a keyed-both-sides deadbolt, check the frame for rot, and swap in a heavier strike. Because the space isn't a home's escape route, the exit rules are far less of a concern.
- Interior storage rooms and secured closets. Rooms holding records, equipment or wine often need a lock that can't be turned from inside by a child or guest. A keyed-both-sides deadbolt does that. We install one on rooms that aren't sleeping spaces and aren't on an escape route, and we keep the keying simple.
- Swapping a double cylinder for a single cylinder. Landlords and home sellers often ask us to remove a double cylinder found during turnover or inspection. We fit a single-cylinder deadbolt in the same brand, restore a thumbturn on the inside and rekey the lock to the rest of the property. The door looks and works normally again.
- Keying, spare keys and the key plan. Both cylinders are pinned to the same key. We can match that key to your other locks in the same brand or start with a new one. We also talk through the key plan: a hook within reach inside the door, out of reach from outside, and known to everyone who lives there.
- High-security and restricted-key double cylinders. A double cylinder concentrates risk in one key, so key control matters more. High-security cylinders resist picking and bumping and limit duplication to authorized holders. They cost more than standard locks, and we help you judge whether the door warrants it.
What's different about Westminster
Apartment tenants in Westminster often ask about double cylinders after a break-in on a balcony or glass door. In a rental unit, the main entry must keep working deadbolt hardware under California law, and tenants need to leave without a key in an emergency. We usually recommend reinforcing the strike, protecting glass and asking the landlord to approve any lock changes. Landlords can call us to remove an unauthorized double cylinder at turnover.
Older homes in Westminster frequently have wood doors with divided glass panes close to the lock, and some already carry a double cylinder from a previous owner. These doors are often the main exit, so we usually recommend a strong single-cylinder deadbolt and laminated glass in the pane nearest the lock. For a rear door that isn't the main route, a double cylinder can make sense. We check stile width before drilling, since old wood can split.
In family neighborhoods across Westminster, kids, guests and busy mornings make a key-to-exit lock hard to live with. Children can't always find or turn a key, and visiting grandparents have never seen it. For the front and garage-entry doors we recommend single cylinders. A double cylinder can work on a detached garage door or a storage room where nobody needs a quick way out.
Example situations
- A family off Westminster Boulevard has a mudroom door with a window beside the lock that opens to the side yard. The front door is their main exit, and the mudroom is rarely used to leave. After checking, we install a double cylinder deadbolt and hang a labeled key hook on the wall near the door, out of reach from the window and visible to everyone in the house.
- A 1920s Craftsman near Westminster High School has a front door with nine small glass panes and a thumbturn deadbolt six inches from the nearest pane. The owner asks for a double cylinder. We explain that this is the home's main exit, so a lock needing a key to leave conflicts with exit guidance. We install a strong single-cylinder deadbolt with a box strike instead, and she calls a glazier about laminated glass for the pane nearest the lock.
- A homeowner installed a double cylinder deadbolt years ago and keeps the key in the lock whenever someone is home. We point out the contradiction: a key sitting in the interior cylinder is exactly what a hand reaching through broken glass would turn. She chooses a single-cylinder deadbolt and laminated glass for the nearest pane, which solves the key problem and the glass problem.
- A small business near McFadden Avenue keeps payroll records and electronics in a storage room with a glass transom. The owner wants a double cylinder so nobody can lock themselves in or turn the lock from inside. We confirm the room isn't an exit path, install a Grade 1 double cylinder deadbolt keyed to the owner's system, and point out that the lightly built door is now the weak spot.
Step by step with Julian's Locksmith
- Talk through the door and the reason. We begin by listening: what happened or what worries you, how the household uses the door, who lives there. Break-in history, kids, older relatives and guests all matter. Then we give an honest arrival estimate and explain what we'll check when we get there.
- Check exits, glass and the people involved. We measure how far the glass is from the lock, test whether a hand could reach it, and note who uses the door. That tells us whether the double cylinder really adds security or only adds risk. You get a plain recommendation and the reasoning behind it.
- Measure, quote and choose the hardware. Hardware choices come next. Standard double cylinder deadbolts from Kwikset or Schlage suit most doors, while heavier Grade 1 or restricted-key models suit higher-risk entries. We show you what fits your door, what each option adds and what the total will be.
- Prepare the door. If a previous lock sat in the door, we inspect the old bores and fill or sleeve any oversize holes. On thick doors we prepare for an extension kit. The prep takes more care than the mounting, and it is why a lock turns smoothly years later.
- Fit both cylinders, key them and set the strike. We mount the bolt, then fit the exterior and interior cylinders through the tailpiece, aligned so the keyway sits upright when unlocked. Both are keyed alike to your key. Then the strike goes in: a box strike with 3-inch screws into the framing.
- Test the lock and plan the key. We test the lock several times from both sides with the door open and closed. Then we agree on the key plan: where the key hangs inside, out of reach from outside, and who knows where it is. You get spare keys and a short checklist.
Pricing factors
- Lock grade and brand. Double cylinder deadbolts come in standard, Grade 2 and Grade 1 versions, and the heavier the lock, the higher the price. Brand and finish matter too. We show two or three choices that fit your door and explain what each adds beyond price.
- Door prep and thickness. Wood doors with glass panes are slower to drill than a plain slab. The jig, masking and careful bore cutting all add time, though they protect your door. If the stile is too narrow for a standard bore, we discuss a different lock rather than force the fit.
- Glass protection you add separately. Laminated glass, security film and grilles aren't part of our lock work. Glaziers and window-film installers handle them, and they have their own costs. We install the lock and strike, and we can tell you what to ask those trades for.
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 Westminster.
What to do before we arrive
- Tell every adult in the household, and any regular visitors, where the key lives. A babysitter, a house guest or an older relative who has never seen the lock should be shown on arrival. A note taped inside a cabinet door can help, as long as it isn't visible from outside.
- If you rent, don't swap in a double cylinder without written permission. Many leases restrict lock changes, and landlords carry exit and liability concerns of their own. Ask about reinforcing the strike or protecting the glass instead; those requests usually meet less pushback. Keep any approval letter with your lease.
- Check your insurance and local rules before installing. Policies, leases and HOA rules differ, and we can't speak for your carrier. A short call to your insurer and to the local building or fire department can prevent trouble at renewal, at inspection or when you sell the house.
- Hang the key where a person leaving can reach it in the dark but a person outside cannot. A hook beside the door, high enough that small children won't play with it, is common. Keep it in the same spot every day. A key tucked in a drawer across the room defeats the safety point.
Mistakes to avoid
- Assuming a double cylinder stops all break-ins. It targets the reach-in method only. A kick, a pry or a drill doesn't care which kind of cylinder is on the inside. Reinforce the strike and frame too, or the lock protects against one attack and ignores the others.
- Buying a double cylinder deadbolt online without checking the door. The stile may be too narrow, the thickness may be wrong or the glass may leave no room for the bore. Returning a lock is cheaper than repairing a damaged door. Measure first, or have us check before you buy.
- Using a double cylinder on a bedroom or an only-exit door. Bedrooms and the only route to an exit need to open without a key. A keyed-both-sides lock there can trap people, especially kids, during a fire, a medical emergency or an ordinary lockout from the wrong side.
Getting to Westminster
Westminster is about 61 miles from our San Bernardino base, roughly 65 minutes in light traffic via I-215 South through Colton and Grand Terrace to SR-91 West in Riverside, SR-91 West through Corona and Santa Ana Canyon to SR-55 South or SR-57 South. When you call, you get an arrival estimate based on where the technician is and the traffic at that moment.
Our path into Westminster depends on where the previous job wrapped up. Sometimes that's a straight run via Hazard Avenue; other times it's surface streets the whole way. Either way, you get a heads-up call when the technician is close.
About Westminster: The 2020 census counted 39,799 Vietnamese Americans in Westminster, about 44 percent of residents, and the city is often described as the capital of overseas Vietnamese.
| Neighborhoods | Civic Center area on Westminster Boulevard, Beach Boulevard corridor, Edwards Street corridor, Westminster Mall site at Goldenwest Street and Bolsa Avenue, Magnolia Street and Brookhurst Street corridors, Midway City |
|---|---|
| ZIP codes | 92683, 92684, 92685 |
| Main routes | I-405, SR-22, SR-39, Bolsa Avenue |
| From our San Bernardino base | about 61 miles via I-215 South through Colton and Grand Terrace to SR-91 West in Riverside, SR-91 West through Corona and Santa Ana Canyon to SR-55 South or SR-57 South, then SR-22 West (Garden Grove Freeway) to the Beach Boulevard (SR-39), Magnolia Street or Valley View Street exits; when the 91 is jammed, I-10 West to SR-57 South and SR-22 West is the usual alternate |
New or replacement locks in Westminster?
Call (951) 903-3193 and tell us which doors and what kind of hardware you have in mind. If you already bought the lock, keep the box handy so we can check it fits the door, and we'll quote the install before any work starts.
Frequently asked questions
What is a double cylinder deadbolt?
It's a deadbolt with a key cylinder on both sides of the door instead of a thumbturn inside. One key, with both cylinders keyed alike, locks and unlocks from either side. That stops someone who breaks glass from turning a thumbturn, but it also means you need a key to leave. We install them in Westminster on doors where that tradeoff is acceptable.
Is there a smart version of a double cylinder deadbolt?
Not in the usual sense. Keypad and smart deadbolts replace the outside key with a code or app and keep a thumbturn inside, so they remove the key-hunt problem but not the glass-reach problem on their own. Pair one with protected glass and a strong strike. We install Schlage, Yale and Kwikset models with a keyed override for dead batteries.
How long does installation take, and when can you come?
A double cylinder on a door that's already bored is a short visit, and fresh drilling on a glass-panel door takes longer. We work every day from 6:30 a.m. to 11:30 p.m., weekends included. Call (951) 903-3193 and we'll give you an honest arrival estimate for Westminster.
Can tenants install a double cylinder deadbolt?
Not without the landlord's written permission, and landlords often decline because of exit-safety and liability concerns. California also expects working deadbolts on the main swinging entry doors of rentals. If glass worries you, ask the landlord about reinforcing the strike, protecting the pane or relocating the lock. We work with landlords and property managers on approved changes.
Where do you recommend a double cylinder deadbolt?
Detached garages, workshops, pool houses, tack rooms and interior storage rooms are common good fits, as are secondary doors in a home where another exit is close. They work best where nobody sleeps behind the door, glass sits near the lock and a clear exit exists elsewhere. We evaluate your door in Westminster before quoting.
Can it be keyed to match my other locks?
Yes, if it's the same brand and keyway, such as Kwikset KW1 or Schlage SC1. We pin both cylinders to your existing key, so one key opens everything. If your locks are different brands, we can match the new lock to one of them or rekey the others to a single key.
How far is Westminster from your base?
Westminster is about 61 miles from our San Bernardino base, roughly 65 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.
Related services in Westminster
- Deadbolt Installation in Westminster
- Deadbolt Replacement in Westminster
- Deadbolt Repair in Westminster
- Front Door Lock Installation in Westminster
- Security Lock Installation in Westminster
- Home Security Locks in Westminster
- Security Lock Upgrade in Westminster
- High Security Lock Installation in Westminster
- Smart Deadbolt Installation in Westminster
- Keypad Lock Installation in Westminster
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