How we score locksmiths in Singapore

What this page covers

Singapore Locksmith Guide currently scores 187 locksmith businesses across the island. This page explains exactly how that score is built, why we weight the signals the way we do, and where the method falls short so you can judge how much to trust any given score.

The five signals behind every score

Each business gets a composite score from 0 to 100, built from five measured signals. They are listed here from heaviest to lightest weight.

• Sentiment, 28%: a synthesis of what recent reviews actually say, weighing praise against recurring complaints.
• Rating, 26%: the business's aggregate star rating on Google.
• Volume, 20%: how many reviews a business has, log-scaled so a locksmith with 400 reviews doesn't automatically dwarf one with 40 just because of raw count, while a business with only a handful of reviews doesn't get treated as equally proven.
• Recency, 12%: how recently customers have left reviews, since a locksmith that was reliable three years ago may not be the same business today.
• Completeness, 14%: whether basic contact details are actually listed: phone number, website, opening hours and address.

Why sentiment carries the most weight

Sentiment is the single heaviest factor, and that's deliberate. A star average on its own hides patterns. Two locksmiths can sit at the same 4.3 stars while one has a spread of unrelated minor gripes and the other has the same complaint showing up again and again, whether that's overcharging after arrival, no-shows for urgent lockouts, or damage to door frames during entry. The star number alone can't tell those two businesses apart. Reading what recent reviews actually describe is the only way to catch that difference, which is why we treat sentiment synthesis as the core of the score rather than a footnote to the rating.

Why the other signals matter

Rating still matters because it's the simplest signal of overall customer satisfaction and it's what most people check first. Volume matters because a 5.0 rating from three reviews tells you far less than a 4.6 from three hundred, so we log-scale it rather than reward sheer count. Recency matters because locksmith businesses change hands, hire new staff, or change how they price emergency callouts, and a review from 2021 says little about a callout booked this week. Completeness matters in a very practical way for a service people often call in a stressful moment, such as being locked out at night: if a listing is missing a working phone number or hours, it's less useful to you no matter how good the reviews are.

Where the score has limits

We're upfront about what this method can't do. Businesses with few recent reviews don't have enough signal to support a confident score, so we flag them as low-confidence rather than pretend the number means the same thing it would for a well-reviewed business. We also don't republish reviews wholesale: what you read in our sentiment summaries is our synthesis of recurring themes, and we link out to the original Google listing so you can read the source reviews yourself and form your own view.

Scores are earned, not sold

Scores come from this rubric and this data, full stop. They are never hand-edited to move a business up or down. Where paid placement exists on the site, it is always labelled clearly as such and it never changes the underlying score. If any list on this site involved editorial judgment in choosing or ordering picks beyond the rubric, that involvement is disclosed on the page itself. You can see the rubric applied in practice on our best locksmiths in Singapore list.

Who publishes this guide

Singapore Locksmith Guide is published by SG Heartland Guides, which has run independent home services directories across Singapore since 2026, built on published customer review data and public business information. Rankings on this site cannot be bought. Editorial oversight of this locksmith guide sits with Jacky Lee, Editor, who maintains the rubric and reviews how it's applied. Listings are re-checked monthly, and the "last verified" stamp on each individual listing reflects that ongoing maintenance rather than a one-time check.

You can find more about the publisher at sgheartlandguides.com, or reach the team directly at hello@sgheartlandguides.com. You can also return to the Singapore Locksmith Guide home page at any time to browse the full directory.