Avoid Lockouts With Reliable Spare Keys

Key Duplication Services in Los Angeles for family members, tenants, employees, and emergency backup access

A lockout happens when the only working key breaks off in the lock, gets left inside a moving truck, or disappears during a hectic day. Larchmont Lock & Key cuts duplicate keys for residential, commercial, and standard lock systems so that you maintain backup access before those situations occur. Property managers distributing keys to new tenants, business owners onboarding employees, and homeowners sharing access with family members all benefit from accurate duplicates that work as reliably as the original.


The duplication process involves tracing the original key's cut pattern and reproducing those depths and spacing on a fresh blank that matches the lock manufacturer's specifications. Precision matters because even slight variations in cut depth cause the key to bind, stick, or fail to turn the cylinder smoothly.


Visit our location to have spare keys cut while you wait, ensuring you leave with functional backups before an emergency forces an inconvenient locksmith call.

How Proper Key Duplication Works

When you bring in a key for duplication, the locksmith secures the original in the key-cutting machine and aligns a matching blank beside it. The cutting wheel follows the original's contours, carving identical notches into the blank at precise depths. Keys cut from worn originals sometimes inherit those imperfections, which can reduce reliability, so duplicating from the best available original or a factory-cut key produces the most consistent results.


You walk away with keys that insert smoothly, turn without resistance, and operate the lock just as predictably as the original you handed over. For properties where multiple doors use the same key, duplicating that single pattern creates spares that work across every lock, eliminating the confusion of managing separate keys for front, back, and side entrances.


Restricted keyway systems and high-security locks often require proof of authorization before duplicates can be made, preventing unauthorized copying. Standard residential and commercial keys carry no such restrictions, making duplication straightforward as long as the blank matches the lock brand and keyway profile.

Common Questions About This Service

Key duplication seems simple, but questions arise around timing, compatibility, and when to create spares for specific situations.

  • How many spare keys should I keep for my property?

    Maintaining at least two spares prevents lockouts when the primary key goes missing, and properties with multiple occupants benefit from having enough duplicates that everyone carries their own instead of sharing a single key that becomes a failure point.

  • Can all keys be duplicated?

    Most standard residential and commercial keys duplicate without restriction, but high-security keys, restricted keyways, and patented lock systems require authorization or original factory blanks that general hardware stores don't stock.

  • What's the difference between a duplicated key and the original?

    A properly cut duplicate functions identically to the original, though keys copied from worn originals may inherit slight inaccuracies that reduce smoothness, which is why duplicating from the newest or least-worn key in your set produces the best results.

  • How quickly can keys be duplicated in Los Angeles?

    Standard key duplication completes in minutes while you wait, though specialty keys requiring specific blanks may involve ordering, which extends the timeline depending on blank availability and shipping.

  • Do duplicate keys wear out faster than originals?

    Duplicate keys and originals wear at similar rates when cut accurately, though poorly duplicated keys with rough edges or incorrect depths may bind in the lock and accelerate wear on both the key and the cylinder pins.

Larchmont Lock & Key provides accurate key duplication for homes, rental properties, and businesses across Los Angeles. Stop by to create the spare keys you need before a lost or broken key leaves you locked out and scrambling for emergency service.