Locksmith workbench with key blanks, cutting machine, and reference guides arranged for work

About ChangeLock

Independent research on lock security, rekeying, and when to call a professional.

What we do

An Independent Guide to Home Lock Security

ChangeLock is an independent informational resource covering door lock security: when to change or rekey locks, how to choose a locksmith, what the lock security ratings mean, and how smart locks compare to traditional hardware.

The site does not sell locks, represent any locksmith company, or earn commissions from product recommendations. Our goal is straightforward: give homeowners and renters the information they need to make smart, confident decisions about door security.

All content is written and reviewed for factual accuracy against published standards -- ANSI/BHMA grading documentation, state locksmith licensing requirements (where applicable), and manufacturer specification sheets. We cite primary sources where claims are data-driven.

Disassembled lock cylinder with pin tumbler stack laid out for inspection
Methodology

How We Research and Fact-Check

Every article on ChangeLock follows this process before publication:

  • Primary source first. Cost data comes from homeowner surveys (Angi, HomeAdvisor), trade association reports, and regional contractor pricing studies -- not single quotes or anecdotal threads.
  • ANSI/BHMA certification checked. When we describe a lock's grade, we verify against the published BHMA product database, not manufacturer marketing copy.
  • Licensing laws verified. Locksmith licensing rules cited in the "How to Choose a Locksmith" guide were cross-checked against each state's licensing board website at time of publication.
  • Smart lock security data sourced from published audits. We reference security research from academic institutions and independent cybersecurity firms, not vendor white papers.
  • Outdated information flagged. Articles that reference prices, regulations, or product availability include the date information was last reviewed.
Editorial standards

What We Will and Will Not Do

We will

  • Cite cost ranges from multiple independent sources
  • Name specific ANSI grades and what they mean mechanically
  • Distinguish between DIY-appropriate and professional-required work
  • Link out to primary sources (licensing boards, BHMA, published studies)
  • Update content when pricing or regulations change materially
  • Flag when information is our best understanding rather than verified fact

We will not

  • Recommend a specific locksmith company or receive referral fees
  • Publish sponsored articles without clear disclosure
  • Guarantee that any lock or security measure prevents burglary
  • Provide instructions that could enable unauthorized entry
  • Claim ANSI grades or lock ratings that cannot be independently verified
Get in touch

Questions, Corrections, and Suggestions

Found an error in our content? Have a question we haven't answered? Use the contact form to reach us. We respond to factual corrections within 5 business days and update articles accordingly.

We do not provide personalized locksmith referrals, pricing quotes, or emergency assistance. For locksmith help, search your local area for licensed locksmiths and apply the verification checklist from our How to Choose a Locksmith guide.