Search engines
Topical Authority
Topical authority describes how thoroughly a website covers a subject, judged across the site rather than page by page. A site with substantial, connected coverage of one subject tends to rank more easily for new pages on that subject than a site publishing across many unrelated subjects. It is a description of a pattern rather than a number any search engine publishes.
For an agent, this argues for depth over breadth. Twenty connected pages about one city's neighbourhoods and its buying process build a clearer pattern than twenty pages spread across mortgages, home staging, national market forecasts, and moving tips.
It also argues against publishing off-topic content for traffic. A widely shared article on an unrelated subject brings visitors who will not transact and blurs what the site is about.
The practical test is whether a new page belongs to something. If it extends a subject the site already covers and links naturally into that group, it strengthens the pattern.
Why it matters
Depth on one subject makes every future page on that subject easier to rank, while scattered coverage makes each one start from nothing.
Related terms
Related reading
Last reviewed 2026-09-04. All Saige glossary terms.