# ChangeLock

> An independent guide to changing, rekeying, and upgrading residential door locks. Covers when to change locks, costs, DIY vs professional service, lock types, smart locks, and how to select a reputable locksmith.

## Main Guide

- [Should You Change Your Locks? The Complete 2026 Guide](https://changelock.net/): Pillar guide covering when to change locks (after moving in, lost keys, security incidents), cost ranges, DIY vs hiring a locksmith, and smart lock options.

## Supporting Guides

- [Rekey vs Replace Locks: When Each Makes Sense](https://changelock.net/guides/rekey-vs-replace): Comparison guide covering cost difference, when rekeying is sufficient, and when replacement is necessary.
- [Door Lock Types Explained: Which Is Most Secure?](https://changelock.net/guides/lock-types): Covers deadbolts, knob locks, mortise locks, padlocks, smart locks, and high-security cylinders with ANSI grade comparisons.
- [How to Choose a Locksmith: 5 Checks Before You Call](https://changelock.net/guides/how-to-choose-a-locksmith): Step-by-step verification process including state licensing, physical address, written estimate, ID requirements, and red flags to watch for.
- [Smart Door Locks: Are They Worth It? Buyer's Guide](https://changelock.net/guides/smart-locks): Compares keypad, Bluetooth, Wi-Fi, and biometric smart locks. ANSI grades, installation requirements, costs, and common security mistakes.

## About

- [About ChangeLock](https://changelock.net/about): Research methodology, editorial standards, data sources, and what the site will and will not publish.