Topical authority

It is an industry concept rather than a metric Google publishes. No tool can measure it directly, and scores sold under the name are third-party estimates. What the idea describes is real enough: a site with many good pages on one subject, linked together and cited by others, tends to perform better on that subject than a site with one isolated page.

It differs from domain authority, a third-party score based mainly on backlinks across all topics. A small specialist site can be the best source on its subject while scoring low on general authority measures.

How it works

Building it means mapping the questions people in your field ask, from basic to advanced, and covering them with pages that each serve a clear purpose. A main page on the broad topic links to supporting pages on the details, and they link back, a structure often called a topic cluster. Internal linking makes the relationship visible to readers and search engines.

Depth beats breadth. Writing about adjacent subjects to capture more searches tends to dilute the focus, and many thin pages on one topic create keyword cannibalization rather than authority. The content still needs the substance described by E-E-A-T.

To check your own coverage, list the main questions customers ask before buying, from what the service is to how much it costs and how to choose a provider, and mark which ones your site answers well. Search Console shows which queries each page already appears for; a topic where many pages appear for scattered queries but none ranks well often points to gaps or overlap. Fill the gaps that matter to buyers first, rather than every question a keyword tool lists.

Example

A roofing company's site has a single services page. It adds a guide to each roof type it works on, pages on repairs, insulation and inspections, honest explanations of what affects cost and photos from real jobs, all linked from a main roofing page. Over the following months, the site starts appearing for many specific roofing questions, not only for its company name.

The company resists writing about solar panels and home insurance, which it does not offer, even though both get more searches. Instead it adds pages on flat roof repairs and on roof inspections for people buying a house, questions its own customers ask. Those pages bring fewer visits than the broad topics would, but most of the people who arrive need a roofer.

Why it matters for your business

For a specialist business, concentrating content on what it really knows is both cheaper and more effective than trying to cover everything, and it matches how customers judge expertise. The trade-off is patience: building coverage takes months, and a site that publishes outside its field to chase traffic can weaken the focus that makes it credible. It also gives the business a library of pages staff can send to customers who ask the same questions, which saves time on the phone and by email.

Common mistakes

• Publishing on loosely related topics to chase search volume, diluting the site's focus.
• Writing many near-identical pages instead of one thorough page per question.
• Leaving supporting pages unlinked, so they read as isolated articles rather than a body of work.
• Treating a third-party authority score as if it were Google's own measure.

Questions people ask

Is topical authority a Google ranking factor?

Google does not publish a topical authority score or name it as a ranking factor. For news searches it has described a system that recognises publications with expertise in particular topics or places, but it publishes no score. Thorough, well-linked coverage supports the same aim. Treat topical authority as a useful way to plan content, not as a number to chase.

How long does it take to build topical authority?

It usually takes months of consistent publishing, depending on the competition and how much useful content you produce. A narrow local niche can be covered well in a few dozen pages. A broad, competitive subject takes far longer and needs links and mentions from other sites as well.

How many articles do I need for topical authority?

There is no fixed number. What matters is whether your pages answer the questions your audience actually asks, from basic to advanced, without repeating each other. Map those questions first and the number of pages follows. A small set of thorough pages beats a large set of thin ones.