What does lock installation actually include?
Lock installation means putting a lock on a door that doesn't have one yet, or fitting different hardware where the old lock is coming out. That covers front door lock installation on a house, a new deadbolt above an existing knob, a lever set on an office or interior door, a mortise lock in a door built to take one, and the heavier hardware that goes on storefront and warehouse doors. It sounds simple until you hold the lock against the real door, and that is why we treat it as a fitting job, not a parts swap.
A lock that is fitted badly fails in ordinary ways. The bolt rubs the strike plate so you have to lean on the door to close it. The latch stops catching when the wood swells. Short screws strip out of soft framing. The key turns stiffly after a month because the cylinder was forced into misaligned holes. Most of our time on any new lock installation goes into the quiet work that prevents those problems: measuring, aligning, reinforcing and testing.
A lock is only as strong as the door and frame holding it. A good bolt in a split jamb or a hollow door edge doesn't give you much. So we look at the whole opening, not only the hardware.
Which lock belongs on which door?
There isn't one right lock. The right choice depends on the door's material and thickness, who uses it, how it's exposed, and what you want it to do. Here is how we usually think it through for each type of door lock installation.
- Front and exterior doors: a deadbolt plus a handle set or lever, with a strike plate screwed through the jamb into the framing behind it. If the main need is a bolt, our deadbolt installation page goes deeper.
- Lever lock installation: lever handles are easier on hands than round knobs, and they suit interior doors, offices and many shared entries. They are a matter of preference and use, not of strength.
- Mortise lock installation: a mortise lock sits in a deep pocket cut into the edge of the door. It is common on older solid doors and on many commercial doors. It needs a door thick enough to take it and careful cutting, so we check the door before promising it.
- Security lock installation: where break-in resistance matters most, we look at hardened bolts, drill-resistant parts, longer strike screws and restricted keyways. See high-security locks for how those differ from standard hardware.
- Keypad and app locks: these are installed on the same doors but add battery, fit and setup considerations. We cover those on the smart lock installation page.
- Residential lock installation on interior and accessory doors: bedroom, office and utility doors usually need a privacy or keyed set, not a deadbolt.
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Call (213) 577-1366How we handle a lock installation, step by step
Whether it's one door or a whole building, the sequence is the same. Here is what happens when we arrive.
- Look at the door and listen to the problem. We check the material, the thickness, whether holes are already bored, how the door sits in its frame, and what has gone wrong with the current lock, if there is one.
- Choose hardware that fits the opening and how it is used. We explain the trade-offs between the options plainly, including when a more modest lock is the sensible choice.
- Prepare the door. That means marking and drilling new holes or reusing sound ones, cutting the latch recess cleanly, and repairing or reinforcing worn wood where the screws will bite.
- Fit the lock and the strike. The strike plate is set precisely and fastened with long screws that reach the framing, not only the thin jamb.
- Align and test. We run the bolt and latch with the door open and closed, try the keys repeatedly, and check that nothing rubs or hesitates.
- Hand over the keys and show you how everything works. If you want more than one door keyed to the same key, we plan that at the start rather than fixing it afterwards.
What does lock installation cost in El Monte?
We don't quote numbers on a web page, because the honest answer depends on the door in front of us. What we can do is tell you exactly what moves the cost up or down, so you can judge any quote you get, ours included.
In general, a standard-grade lock on a sound door with holes already in the right places is usually the more economical route. The cost rises when the door needs more work or the hardware does more.
- The lock itself: grade, finish, brand, and whether it is a basic set, a high-security cylinder, a mortise body or a commercial-grade lever.
- The door: solid wood, hollow-core, steel, or aluminum storefront. A door that needs new bores, repaired edges or a reinforced jamb takes more labor.
- Number of locks: several doors at one visit are handled more efficiently than one at a time, and keying them alike takes planning.
- Keying: a standard key, a restricted key, or a master key arrangement all change the work.
- Reinforcement: strike plates, door-edge plates and longer screws add parts and time but add real strength.
- Timing and distance: an after-hours call is different from a scheduled daytime visit, and our storefront is in Westwood, about 25 miles from El Monte.
- Your own hardware: if you bought the lock yourself, we can install it, but we'll tell you honestly whether it suits the door.
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Call (213) 577-1366Lock installation in El Monte: what these blocks and buildings call for
We work across El Monte, including both ZIP codes, 91731 and 91732. The housing here shapes the work more than anything else. The city is mostly postwar bungalows and small ranch homes, along with many small apartment complexes and backyard accessory units, and a large share of residents rent. In practice that means a lot of original mid-century locksets still on doors. Some bores are worn oversized, some strike plates are held in with short screws, and some doors have been planed or painted so many times that a modern lock needs adjustment to sit right.
A common job in Five Points is security screen door and deadbolt work on a postwar bungalow. The two doors have to work together: a screen door often sits close to the front door, so the handle and bolt on the inner door need to clear it, and the screen door's own latch needs to be solid. Window bars and security screens are common retrofits on denser blocks, and they are a good reason to install a quality deadbolt on the inside door rather than rely on the screen alone. The same housing pattern shows up in Mountain View, Norwood Village and Arden Village, so we arrive expecting older wood doors and frames rather than new stock.
Climate matters too. El Monte sits in a flat San Gabriel Valley basin with hot, dry summers and little coastal relief. Wood doors and frames expand in the heat, and the main seasonal problem for locks is binding. A latch that is fitted with no clearance in cool weather can drag in August. We set clearances with that in mind, and if a door already swells in summer we say so before drilling into it.
Downtown, the Valley Mall pedestrian district has storefronts that need commercial lock installation, and the Flair Park business district has office suites with their own entry and interior door needs. In the Northwest Industrial District, warehouse and roll-up door lock work is a different animal, with heavier hardware and different exposure. The Zamora Park area has the same mix of older homes and small multi-unit buildings.
Because we are 25 miles away in Westwood, we come to you with a mobile locksmith van carrying the hardware and tools for the job. If you own or manage rental units or accessory units, our locksmith for landlords page explains how we handle multi-door and turnover work.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Commercial lock installation: shops, offices and warehouses
Commercial lock installation is not residential work in a bigger size. A storefront door may be aluminum with a narrow stile that only takes certain locks. An office suite may need keyed-alike or master-keyed doors. A warehouse door may need a lock built for an overhead or roll-up door. Doors on the path of exit often have rules about how they must open from the inside, so we choose hardware that works for daily use and for getting out safely.
We install new locks, lever sets, mortise locks and exit hardware on commercial openings, and we plan keying so you aren't handing out a pile of unrelated keys. For the hardware side of storefronts and office doors, see commercial door hardware. If you are setting up a new space, tell us how many people need access and to which doors, and we'll build the keying around that.
Do you need a new lock, or something lighter?
Sometimes new hardware isn't the answer. If the lock works but you've lost keys, moved in, or want to cut off a former tenant, rekeying changes what key works without replacing the lock, and it is often the lighter-cost option. Our lock rekeying page explains it. If the existing lock is worn, broken or outdated and you want the same type of hardware in the same spot, lock replacement is the better fit.
New installation is the right call when there is no lock, you're adding a second one such as a deadbolt, you're changing the type of lock, or the door has been modified. If we arrive and find that a lighter fix does the job, we'll tell you so. We would rather you spend what the door needs than what we could sell you.
Why call Wilshire Lock & Key for lock installation
We have been in business since 1987, and we serve 140 cities across Los Angeles and Ventura counties. We have a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans, so you are dealing with an actual local company, not a call center passing your address to whoever is free. One company answers, one company sends the technician, and no dispatch middlemen are in between.
David, the owner and lead technician, oversees the work. That matters on a job like this, where the difference between a lock that lasts and one that causes trouble is in details like alignment, screw length and clearance.
Our phone line is answered 24 hours a day, seven days a week, all year, at (213) 577-1366. Call, describe the door, and we'll tell you what we'd suggest. You can also use our contact page to reach us.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How to check a locksmith before they work on your door
California requires locksmith companies to hold a BSIS LCO license, issued through the Bureau of Security and Investigative Services. Ask any locksmith, including us, for the company's license details before work begins, and be careful with anyone who dodges the question. A real company should be able to name itself, give a local address and say who will arrive. A lock is the thing that keeps your home or business secure, so it is reasonable to ask who is handling it.
Frequently asked questions
How long does a door lock installation take?
It depends on the door. Replacing a lock on a sound door that already has the right holes is a short visit. Adding a new deadbolt where nothing was bored before takes longer, and so does work on a swollen, warped or damaged door. We'll tell you what to expect once we've seen the door.
Can you install a lock on a door that has never had one?
Yes. We measure and mark the door, drill the holes the lock needs, cut the latch recess, and fit the strike plate into the frame. We also check that the door is thick and solid enough for the lock you've chosen, and reinforce it if it isn't.
Will a new lock fit the old door on my El Monte bungalow?
Usually, yes, but older doors vary. Original mid-century locksets are still common on postwar homes in the city, and the holes in those doors can be worn or non-standard. Sometimes we can fit a modern lock with the right trim; sometimes a door needs a little repair work first. We check before we start.
Can you fit a deadbolt on a door behind a security screen door?
Yes. Security screen doors are common on denser El Monte blocks. The key is making sure the inner door's handle and bolt clear the screen door and that both close properly together. We can work on the deadbolt and the screen door's own latch in the same visit.
Should I get a new lock or just have my locks rekeyed?
If your locks are in good shape and the only worry is who has keys, rekeying is often the lighter-cost option. If there is no lock, you want a different type, or the existing one is worn, new installation or replacement makes more sense. If you aren't sure, describe it when you call and we'll say which fits.
Can you install a lock I bought myself?
Yes, we can. We'll check that it suits the door and its use. If it is poor quality or the wrong type for the door, we'll tell you plainly and let you decide, rather than quietly fitting something that won't hold up.
Do you handle commercial lock installation for shops, offices and warehouses in El Monte?
Yes. We install locks on storefronts, office suites and warehouse or roll-up doors, and we plan keying around how many people need access to which doors. Exit hardware and door type affect what can be used, so we look at the opening first.
Can I call at night or on a weekend to get a lock installed?
Yes. Our phone is answered 24 hours a day, seven days a week, at (213) 577-1366. After-hours calls are priced differently from scheduled daytime visits, and we explain that when you call.
I rent my home in El Monte. Can I have new locks installed?
That depends on your lease and your landlord, so check with them first. In many cases a landlord wants to approve the change or keep a key. If you are an owner or manager of rental or accessory units, we can help plan the locks across your doors.
More locksmith help in El Monte
Lock Installation near El Monte
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.