How doorway pages work
A doorway page is built to catch a search, not to serve the person who made it. The classic version is a set of pages differing only by place name — the same paragraphs with a different town dropped in — each ranking for its own local query and each pushing the visitor onward to one central page. The same pattern turns up with service variations, model numbers and course names.
Google names this behaviour in its spam policies. The test it applies is whether the pages are useful destinations in their own right, or whether they are funnels: many similar entry points, one real page behind them, and a reader who gains nothing by landing on the entry point instead of the destination.
Why doorway pages matter
They matter because the technique is still sold. Agencies quote for “a page for every district” or “a landing page for each service in each suburb”, and the proposal looks like a great deal of value for the money. What it usually buys is a set of pages that either fail to rank or, if they do, expose the site to an algorithmic demotion or a manual action that is slow and expensive to unwind.
The risk is not confined to the doorway pages themselves. Spam policies are applied to sites, so a large set of funnel pages can change how the rest of the site is treated, including the pages that were doing genuine work for you.
Where doorway pages go wrong
The hard part in practice is the boundary, because legitimate location pages look superficially similar. The distinction is substance and service. A page for a town where you have staff, completed jobs, opening hours, photographs, delivery times and prices specific to that town is a real page. A page for a town you have never visited, carrying the same copy with the name changed, is a doorway.
Two other patterns cross the line quietly. Pages that rank and then immediately funnel or redirect the visitor somewhere else are doorways whatever they contain. And generated pages covering every combination of service and place — the failure mode of careless programmatic SEO — become doorways the moment the combinations stop being real.
What to do instead
Publish fewer, better pages you can actually justify. If you genuinely serve several areas, make each page reflect something true about serving that area: the people who cover it, the jobs you have done there, travel times, local requirements, reviews from customers who live there. If you cannot say anything specific, the honest answer is one page listing the areas you cover.
Where doorway pages already exist, merge or remove them rather than leaving them to be found. Consolidating them into a stronger page and redirecting the retired URLs keeps whatever value they had accumulated. A business that really does serve multiple areas should rebuild them as genuine local SEO pages, each with distinct content and a distinct reason to exist.