Most people start looking for the best smart lock for home use after something changes. You moved in and do not know who still holds a key. A cleaner or dog walker needs to get in on Tuesdays. The kids keep losing theirs. Or you are simply tired of standing in the driveway wondering whether you locked the front door.
A smart lock solves that, but only if it suits your door and your habits. A busy family that needs six codes wants something different from a rental owner changing access between tenants, or a homeowner who just wants to stop carrying keys. Here is how to pick, based on what actually goes wrong on doors around Ballwin and West St. Louis County.
Start with the door, not the lock
A smart lock is bolted onto whatever you already have. If the deadbolt sticks, the strike plate is loose, or the frame has shifted, the smartest lock on the market will still bind, drain batteries and fail to throw the bolt properly.
This matters more here than in newer parts of the country. A lot of homes in Ballwin, Manchester and Ellisville are forty or fifty years old, and doors move over that many winters. Try the test yourself: throw the deadbolt by hand with the door closed. If it needs a shoulder or a lift on the handle, that is a door and hardware problem, and it needs fixing before any smart lock goes on.
Decide how you want to open the door
This is the question that narrows the field fastest, and it has nothing to do with brand.
Some people want a keypad and nothing else. Punch in four digits, done, no phone involved. Others want the app: lock the door from work, see when the kids got home, let a contractor in from the office. Both are valid, but buying the second when you wanted the first is how people end up with a lock they find annoying.
If you are still weighing the general approach rather than a specific model, our guide to keyless entry options for St. Louis homes covers the wider picture, and the benefits of installing smart locks goes into what changes day to day once one is on the door.
The main types, and who each suits
Keypad smart deadbolts
These replace the deadbolt completely and put a keypad on the outside. For most homes this is the sensible pick. Each person gets their own code, you delete a code when someone no longer needs access, and there is usually a physical key as backup. Look for a recognized lock brand, a weather-sealed keypad, and a clear low-battery warning.
Retrofit smart locks
These fit over the inside thumbturn and leave your existing exterior hardware and key alone. Good if you like the look of your door, or if everyone already carries a key and you only want remote control added. The catch is that most lean heavily on the app, and compatibility with your existing deadbolt is not guaranteed.
Fingerprint and lever models
Fingerprint readers are convenient when they work well, but performance varies in cold weather and with wet or dirty hands. Lever-style smart locks suit interior or secondary doors; for a front door, a proper deadbolt is still the stronger choice.
Smart home compatibility: only if you use it
If your house already runs on a hub and you want the lock in your routines, buy for that system. If it does not, do not pay extra for integrations you will never open. A lock that works reliably at the door beats one that works beautifully in an app you check twice a year.
What we install, and what we do not
We fit and set up consumer smart locks and keypad deadbolts on homes and small business doors as part of our smart lock installation service. That includes checking the door, fitting the hardware, setting up your codes and testing everything before we leave.
We do not design or install commercial access-control systems: card readers, networked door controllers or multi-door badge setups are outside what we do. For business doors that need locks, panic hardware or master keying rather than access control, see our commercial locksmith work.
Mistakes worth avoiding
Buying on looks or price alone is the common one. Motor strength, weather resistance and battery life are what separate a lock that lasts from one you replace in two years, and none of them show up in a product photo.
Buying more lock than you need is the second. Every extra feature is another setting, another update and another thing that can misbehave.
And do not give up the physical key unless you are certain. A backup keyway costs nothing and saves you on the evening the batteries die and your phone is at three percent.
Which one is right for your home?
If you want the simplest real upgrade: a keypad deadbolt from a known brand, with a backup key. That covers most households.
If you manage a rental: prioritise code management, so you can change access between tenants. You may still want the locks rekeyed on turnover, but codes handle the day-to-day.
If you have just moved in: change access on every exterior door first, then decide about smart hardware. Our moving into a new home checklist covers the order to do it in, and a straight residential lock change is often the cheaper starting point.
If you are unsure whether the door will take one at all: that is worth a look before you buy anything. Choosing the right lock starts with the opening, not the catalogue.
Common Questions
Will a smart lock fit my existing door?
Usually, but not always. Door thickness, backset and the existing bore holes all have to match the model, and a retrofit unit also has to suit your current deadbolt. Older doors and narrow-stile aluminum doors are the ones that catch people out. It is worth checking before the box is opened.
What happens when the batteries die?
Most locks warn you for weeks beforehand. If one does go flat, you use the backup key, or on keyless models, an emergency power contact on the outside. Change batteries on a schedule rather than waiting for the beeping, and keep a physical key somewhere off the property.
Can you install a lock I bought myself?
Yes. Tell us the make and model when you book so we can check it suits your door before we arrive. We check the door first and will tell you honestly if the frame or the hardware needs attention before the lock goes on.
Getting one fitted in Ballwin and West St. Louis County
Locks R Us is a mobile locksmith based in Ballwin, and we cover Manchester, Chesterfield, Wildwood and the rest of the areas we serve. Over 11 years of local work, licensed and insured, out every day from 8 AM to 10 PM.
If you want a hand choosing, or you have the lock and want it fitted properly, call (636) 628-7803. If the door is what is really giving you trouble, say so when you call and we will bring what we need to sort that out at the same time.





