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How to Choose the Right Lock for Your Home or Office

Tradesman in safety glasses lining up a fitting with a laser level

How to Choose the Right Lock: A Door-Fit Checklist

To choose the right lock, start with the entry it must secure. Note the door material, thickness, backset and existing holes, then check whether the latch and deadbolt move freely. Compare compatible options only after deciding who needs access and how keys or codes will be managed.

The right lock should match the door, the property, and the level of security you need. A well-chosen lock can improve safety without making everyday access complicated.Start with the door itself. Exterior doors usually need a quality deadbolt, while interior rooms may only need privacy or passage hardware. Offices may also benefit from restricted access or master-key planning.For an exterior door, check the door thickness, backset, strike plate, and frame condition before buying hardware. Even a strong lock performs poorly when the frame or installation is weak. Period doors need particular care here, which is why hardware choices on the older Conway and Warson Road properties often come down to matching an existing finish.Look for durable hardware from a reputable manufacturer and choose a finish that resists local weather and daily wear. If you would rather not guess, our residential lock change service covers exactly this kind of assessment before any hardware is bought.Smart locks can add keypad or app access, but they still need proper installation and a reliable mechanical backup. See our guide on why smart locks are worth installing if that route interests you.

Choose Security That Fits the Door

For homes, prioritize solid deadbolts, reinforced strike plates, and convenient key control. Rekeying is often enough when the existing hardware is in good condition — see how often you should rekey your locks for more on that decision.For offices, consider how many people need access, which doors require different permissions, and whether employee turnover makes rekeying or an upgraded business security setup worthwhile. We deal with this most often in the multi-suite buildings on New Ballas Road.If you are unsure which lock fits your door, Locks R Us can assess the hardware and explain the practical options. Call (636) 628-7803; service is available daily from 8 AM to 10 PM.
Locksmith tools and door hardware for residential lock service

Locks R Us

Local Locksmith Team
Practical security guidance from Locks R Us, serving homes and businesses across Ballwin and Greater St. Louis.

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