π Can I Upgrade Just One Lock, or Should I Replace Them All?

Upgrading your locks is one of the easiest ways to boost home security β but should you update just one, or replace every lock in the house? Itβs a question many Swindon homeowners ask, especially after moving house, experiencing a break-in, or upgrading just one door.
Letβs break down the pros, cons, and smart approach to securing your entire home.
π Table of Contents
- Β π Why You Might Want to Replace Them All
- Β π οΈ The Importance of Consistent Lock Grades
- Β π What a Local Locksmith Recommends
πͺ When Is It Okay to Upgrade Just One Lock?
There are scenarios where just one lock upgrade makes perfect sense:
π Youβve recently had a key go missing
π οΈ One lock is damaged or malfunctioning
π A specific door is being targeted for entry (e.g. back doors or garages)
πͺ Youβre adding a smart lock for convenience on your main door
In these cases, upgrading a single lock boosts protection without overhauling the whole home β as long as the rest of your locks are still in good condition.
π Why You Might Want to Replace Them All
While single upgrades help in specific cases, full replacement offers comprehensive protection, especially when:
π Youβve just moved into a new home
π₯ Thereβs been a change in tenants or household members
π Some locks are outdated or donβt meet insurance standards
π You want uniformity in lock quality, keys, and security features
π‘ Bonus tip: Consider βkeyed alikeβ locks β all locks operate with one key for simplicity and control.
π οΈ The Importance of Consistent Lock Grades
Mixing high-security locks with cheaper ones creates security gaps.
π An intruder will always look for the easiest entry point
π A weak backdoor or side gate can bypass all front door upgrades
π¦ Insurance providers may only cover properties where all locks meet standards
Thatβs why itβs not just about upgrading one lock β itβs about ensuring your entire system works together.
π What a Local Locksmith Recommends
Every property is different. Thatβs why we always recommend a home security audit by a local pro.
A certified Locksmith Swindon
expert from The Lock Wizard can:
β
Inspect all external access points
π Advise on BS3621 and TS007-compliant hardware
π οΈ Install anti-snap cylinders, smart locks, or full system upgrades
π§© Help you decide whether one, two, or all locks need attention
ποΈ Not sure if one lock is enough?
Book a visit with Locksmith Swindon
β The Lock Wizard team delivers honest advice, expert installation, and total peace of mind.




