Why a rental needs different locks than a regular home
A home you live in has a handful of keys that stay in a handful of pockets. A rental is the opposite. Dozens of strangers pass through over a year, each one gets access for a few days, and you need that access to end cleanly when they check out. Every lock decision comes back to that one problem: how do you let someone in without letting them stay in forever?
Most hosts start out with a key under a mat or a standard lockbox and a spare they hide somewhere. That works until a guest copies a key, forgets to return one, or shares a lockbox code with a friend. At that point you can't say who has access to your property, and you can't prove who doesn't.
We've been working on locks in Southern California since 1987, and short-term rentals have a pattern we see over and over: the lock hardware is fine, but the access system around it was never planned. This page walks through how to plan it, what we can set up for you in Paramount, and what to do when something goes wrong at eleven at night with a guest standing on the porch.
What do Paramount rental hosts usually call us for?
The needs are fairly predictable once you've done this a while. Most calls fall into a few buckets, and it helps to know which one you're in before you pick up the phone.
- Installing a keypad deadbolt or smart lock so check-in doesn't depend on someone meeting the guest
- Changing or rotating access codes on a schedule, or after a guest leaves under bad circumstances
- Rekeying every lock on the unit so old keys stop working, without buying all new hardware
- Copying keys for cleaners, co-hosts and property managers in a way you can track
- A guest locked out, a lost key, or a smart lock that went dead mid-stay
- Broken or sticking hardware after heavy turnover, such as worn deadbolts and loose door handles
- Mailbox lock work when a unit shares a mailbox bank with other tenants
How do code rotation and smart lock setup work?
Code rotation is the habit of giving every guest a code that is different from the last guest's, and ideally one that expires on its own. Most modern keypad and smart locks support this. What varies is how much of it happens automatically and how much you do by hand, and that depends on the lock you choose and whether it connects to Wi-Fi or a hub.
We handle the physical side of this: picking hardware that fits your door, installing it so the bolt actually throws cleanly into the strike, and getting the lock working properly with whatever app or system you plan to use. If you want to look at options in detail, our smart lock installation page covers what we install and what to expect.
- Tell us about the door: material, thickness, whether it has a security screen door in front, and what lock is on it now.
- We recommend hardware that suits that door and how you manage your listing, and we tell you honestly if a simpler keypad deadbolt would serve you better than a full smart lock.
- We install the lock, check the bolt alignment, and test the lock from both sides of the door.
- We set up your master or owner code and show you how to add, remove and schedule guest codes.
- We walk through what happens when batteries run low and where the emergency key or backup power option is.
- You test a full cycle yourself before we leave, so the first real guest isn't the first test.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Smart lock, keypad deadbolt, or keys and a lockbox?
There isn't one right answer, and anyone who tells you there is probably sells one product. Here is how we think about the three common setups for a rental.
A lockbox with a physical key is the lighter-cost option up front and needs no batteries. The weakness is that the key itself never changes. If a guest copies it or keeps it, the only fix is rekeying. A lockbox code can be changed, but the key inside stays the same, so you're only controlling who can reach the key, not who has a duplicate.
A keypad deadbolt without any app is simple and tough. You change the code by hand, there is no Wi-Fi to fail, and it's easy to explain to guests. The tradeoff is that code changes are manual, so you or someone you trust has to be at the door, or you accept reusing codes for longer than you'd like.
A smart lock connected to your phone or a hub lets you issue and expire codes remotely, which is what most hosts mean when they say remote check-in. The tradeoff is more things that can fail: batteries, connectivity, app accounts. We always suggest keeping a physical key override and a plan for dead batteries. A lock that locks out your own guest is worse than the problem it replaced.
- Frequent turnover and you live far away: a smart lock usually pays for itself in saved trips
- One or two long-stay guests a year: a keypad deadbolt or rekey between guests is often plenty
- Shared entry or older door in rough shape: fix or replace the door hardware first, since a smart lock can't make up for a door that doesn't close squarely
What happens when a guest is locked out or loses a key?
This is the call hosts dread, usually after dark or on a weekend. The good news is that it's a solvable problem, and the way you solve it depends mostly on what lock is on the door.
If the lock is a standard keyed deadbolt, we can open it with minimal or no damage in most cases and, if you want, rekey it on the spot so the lost key is useless. If it's a smart lock that has failed, the cause is usually dead batteries, a loose connection or a jammed bolt, and we can often get the door open and the lock working again. Because we run mobile service vans alongside our Westwood storefront, we come to the unit rather than asking you to bring anything in. More on that on our mobile locksmith page.
We pick up the phone at (213) 577-1366 any hour, any day. One practical point: we will need to be sure the person asking us to open the door has the right to do so. As the owner or host, you can authorize the work. If a guest calls us directly, we'll want to hear from you before we open a unit that isn't theirs.
- Call (213) 577-1366 and tell us the address, the type of lock, and who is locked out.
- If you're not at the property, tell us that, and we will talk through how to confirm you're the owner or authorized host before opening the door.
- We open the door, check the lock for damage, and tell you what we find.
- If a key is lost or a code has been compromised, we can rekey or replace the lock while we're there.
- We confirm everything works, and you get new keys or new codes before we leave.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What affects the cost of rental lock work?
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 what moves the cost up or down, so you're not surprised.
The biggest factor is whether you're repairing, rekeying or replacing. Rekeying an existing lock is usually the more economical route, especially if you have several doors and the hardware is in good shape. Replacing a lock costs more, and a smart lock costs more than a basic keyed one, and the hardware itself varies widely by brand and feature set.
Other factors include how many doors or locks are involved, whether the door is out of alignment and needs adjustment before any lock will work, whether it's an after-hours or emergency visit, and how far we travel to reach you. Paramount is about 23 miles from our base, so that's part of the picture on mobile calls. If you have several units or doors to do at once, tell us up front, since doing them together is usually more efficient than separate trips.
When you call, we'll explain the likely scope and what could change it before any work starts, and we will tell you plainly if something you've described sounds like it isn't worth fixing.
Rental locks in Paramount: what the local housing means for your doors
Paramount formed in 1948 from the dairy towns of Hynes and Clearwater, and the housing here is mostly small single-family homes from the 1940s and 1950s, built as the dairies gave way to tracts. If your rental is one of those postwar houses, the doors and hardware may be original or have been swapped over the decades by different owners. Rekeying postwar single-family homes is routine work for us, and it is often the right first step when you take over a property that has had many keys floating around.
The city also has a high renter share, with numerous 1960s to 1980s apartment complexes and several mobile home parks. That matters if your unit is in a complex: you may be limited in what you can change on the main entry, and mailbox locks and shared gates are often handled separately from your own door. If a mailbox lock is part of your setup, see our mailbox lock replacement page. If you're locked out of an apartment unit, our apartment lockout service covers that case, and mobile home lockouts and hardware swaps in the city's parks are work we do as well.
Security screen doors are common on both houses and apartments in Paramount. For a smart lock install, that's worth mentioning when you call: the screen door can affect how the main door's keypad is reached and how a guest enters with luggage in hand. We'll look at how the two doors work together before recommending hardware.
On climate, Paramount sits on the flat southeast-county coastal plain with a morning marine layer and mild temperatures. Salt-air corrosion is not a meaningful factor here, so you don't need to shop for specialty weather finishes. Damp winters can swell older wood doors, though, and a swollen door that sticks can make a deadbolt hard to throw or a smart lock motor strain. If a guest keeps reporting that the door is hard to lock, check the door fit before blaming the lock.
We work across the city, from the old Hynes and Clearwater districts to the Paramount Boulevard, Downey Avenue, Alondra Boulevard, Somerset Boulevard and Rosecrans Avenue corridors, the Progress Park area, and the edge near Hollydale in South Gate. ZIP 90723 is the one to give us when you call, along with a cross street. For more on how we cover the city, see our Paramount locksmith page.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Keeping keys under control with cleaners, co-hosts and managers
Even a host who uses a smart lock usually has a few physical keys out there: the cleaner, a co-host, a neighbor. Those keys are where most access problems come from. Our advice is to keep the number small, know who holds each one, and rekey when the list of people changes.
If you need copies, key duplication is simple for standard keys. Some restricted or high-security keys can't be copied at a hardware store, which is a benefit if you'd rather not have copies made without you knowing. If you manage several properties, or you own rentals alongside long-term tenants, our locksmith for landlords page covers the turnover and rekey routines that apply to both.
- Keep a written list of who has a physical key to each unit
- Rekey after a cleaner or co-host leaves your team, not just after a guest incident
- Use individual codes per person where your lock allows it, so you can see who used the door and delete only that person's code
- Replace batteries on a calendar, not when the lock starts beeping
Why hosts call Wilshire Lock & Key
We've been in business since 1987, and David, our owner and lead technician, oversees the work. We run a storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans, and you deal with one company from the first call to the finished job, with no dispatch middleman passing your address along to whoever is free.
Our line is answered around the clock, all year, which matters for rentals because check-ins and lockouts don't follow business hours. If you want a general overview of our after-hours work, see our 24-hour locksmith page.
One practical note: California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith you hire for it. It's a fair question and it protects you, especially when a stranger is working on the door to your investment property.
We'll tell you if the lighter-cost fix is enough, and we'll tell you when it isn't. If you're setting up a new rental, upgrading after a bad experience, or just tired of driving over to hand off keys, call (213) 577-1366 or use our contact page and we'll talk through the door in front of you.
Frequently asked questions
Can you install a smart lock on a rental that has a security screen door?
Usually yes. Security screen doors are common on Paramount houses and apartments, so we look at how the screen door and the main door work together. We check clearance for the keypad, how a guest reaches it with luggage, and whether the screen door lock needs changing too.
Is it better to rekey between guests or switch to a smart lock?
It depends on how often guests turn over. Rekeying is usually the more economical route for occasional stays or a one-time reset after a lost key. If you have frequent turnover or live far away, a smart lock with rotating codes usually saves more effort over time.
What if my smart lock battery dies while a guest is inside or outside?
Most smart locks give a low-battery warning first, and many have an emergency power option or a backup key. We set up and explain that before you leave the install. If a lock does fail, call (213) 577-1366 and we'll help get the door open and working again.
Can you open my rental if I'm not at the property?
We can, but we need to confirm that you are the owner or an authorized host before we open the door. We'll talk through how to do that when you call. If a guest contacts us directly, we will want to hear from you first.
Do you work on mobile homes and apartments, or only houses?
All three. Paramount has postwar single-family homes, a high share of 1960s to 1980s apartment complexes, and several mobile home parks. We handle lockouts, rekeys and hardware swaps in each, though apartment complexes may restrict what you can change on shared doors.
How do I stop a former guest or cleaner from using an old key?
Rekey the lock. Rekeying changes the internal pins so old keys no longer turn the lock, and you keep the same hardware. With a smart lock, delete that person's code and, if they held a physical key, rekey the cylinder as well.
Can you set up several rental units at once?
Yes, and it's usually more efficient than separate visits. Tell us how many doors, what locks are on them now, and whether you want them all on one key or on separate keys. We'll plan the work so the units are finished in one trip where possible.
How do I get a locksmith out to Paramount for a rental emergency?
Call (213) 577-1366. The line is answered 24 hours a day, every day of the year. Give us the address, your ZIP (90723 for Paramount), the type of lock, and what's happened, and we'll explain what we can do and what could affect the cost.
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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
