Best Smart Locks for Bay Area Homes in 2026

A retrofit unit mounts on the inside of your door, over the existing thumbturn, and turns the deadbolt you already own. Nothing changes on the outside, no new holes are drilled, your existing keys keep working, and the whole thing comes off in ten minutes. That is the version for renters, for anyone under an association with rules about exterior appearance, and for anyone with old exterior hardware worth keeping — a brass escutcheon on a Willow Glen bungalow that cannot be bought any more, for instance.

A full replacement swaps the whole deadbolt for one with a keypad or reader in the exterior escutcheon. That is the version for people who want to stop carrying a key at all, and for households where visitors need codes rather than keys. It is more work on the door and it is visible from the street, which is exactly why it is the version an association may have opinions about.

Fitted, either runs $182 to $455 here depending on the door and the unit, with the $89 visit inside the figure. Hardware you supply is fitted at the same labour, and if it will not suit your door you hear that before the box is opened rather than after.

In the condo towers downtown, the newer blocks around Berryessa station and the townhome complexes in Milpitas and Cupertino, the association usually has two conditions. The exterior finish must match, and a mechanical key must still work for emergency access. Between them, those rule out a large share of the keypad locks on a shop shelf — particularly the fashionable ones with no keyway at all.

An interior retrofit satisfies almost every set of rules, because nothing anyone outside can see has changed. Where a full replacement is allowed, the practical route is to read the two lines in the rules, then choose a model that has a keyed override in the right finish. Ten minutes with the document beats replacing the lock twice, and this is genuinely the single most common expensive mistake in this category.

Renters have a simpler answer. The retrofit is the one to ask for: the landlord's key still works, nothing is modified, and it leaves with you. It is worth telling your landlord anyway, because a landlord who finds one unannounced tends to react to the surprise rather than the object.

The Eichler tracts — Fairglen off Curtner Ave and the mid-century streets like it — have entry doors set in aluminium frames with narrow stiles. A standard residential deadbolt physically does not fit, and most consumer keypad locks are simply the wrong shape for that frame. What is needed is a narrow-stile lock designed for it, the choice is genuinely small, and a technician who fits a normal unit anyway leaves a door that binds within a season.

The same caution applies to any glass-and-aluminium entry, to doors with a full-height sidelight beside them, and to gates. A sidelight is a specific problem: if the glass can be broken and an arm reach the thumbturn, an interior retrofit is exactly the wrong choice, and the alternatives have a fire-safety side worth talking about before buying rather than after.

Older timber doors in Naglee Park, Willow Glen or the Cambrian ranches usually take anything, with one condition: the door has to close properly first. Which brings us to the part that actually decides whether you like the lock.

Almost every smart-lock complaint that reaches a locksmith is a door problem wearing a software costume. The bolt does not throw freely; a hand has been forcing it for years without anyone noticing, because a hand is strong and adaptable. A motor is neither. It throws the same distance with the same force every time, and the first cold week of December, when the frame swells, is when it stops managing.

So a proper installation starts before the lock: hinges checked, door checked for square, strike position adjusted and the mortise deepened until the bolt travels its full length under its own weight. That is ten minutes of work and it is the difference between a lock that runs for years and one that gets ripped off in the spring with a bad review attached.

Two more things get done at the end and are worth insisting on. The mechanical override is tested rather than assumed. And the batteries are explained honestly: most units warn for weeks, but the failure mode is a door that will not open on a cold morning, so the override key needs to live somewhere that is not inside the house. A neighbour is the classic answer; a key safe screwed to brick is the second.

Before buying, check the ecosystem you actually use rather than the one on the box. Support for a given platform can differ between two units from the same brand, and a lock that needs a separate bridge to reach the internet is a lock with a second thing that can go offline. If your only requirement is a code for the dog walker, a good offline keypad does that with fewer moving parts and no monthly anything.

At handover, set up the codes properly rather than leaving the default. One code for the household, separate codes for a cleaner, a carer or a dog walker, so that one can be revoked without changing everybody's. Auto-lock timing set to something a family can live with — too short and the door locks behind a child carrying shopping, too long and it never locks at all.

And keep the mechanical side in order. If several doors are being touched, ask to have the others rekeyed onto one key at $26 to $42 a cylinder while the van is there, so the key you keep for the day the batteries die opens everything rather than one door.