Who Google's AI Overviews cite when service businesses search for SEO help

When a roofer, a dentist or a law firm owner types "roofing seo" or "law firm seo" into Google, the first thing on the page is usually not a website. It is an AI Overview, with a short list of sources underneath.

Getting a business named in these answers is the work of our AI SEO services.

We wanted to know which sources those are. So on November 7, 2026 we read the live Google results page for 15 searches that service businesses and agencies make when they look for SEO help, and recorded every source each AI Overview cited.

The short version

• 14 of the 15 searches showed an AI Overview. The exception was "home services seo".
• Agency websites were cited in all 14, but by different agencies each time. The most frequent, Thrive, appeared in 3.
• YouTube was cited in 11 of 14, the most common source after agency sites.
• Field service software companies were cited in all 4 trade searches that showed an AI Overview (roofing, HVAC, plumber and contractor SEO): ServiceTitan, Housecall Pro, Jobber, Orderry and Thryv.
• Reddit was cited in 5 of 14, LinkedIn in 4 of 14.
• Google's own help and developer pages were cited in only 2 of 14, both for how-to searches (Google Business Profile optimization and AI search optimization).
• 5 of the 14 overviews quoted price ranges for SEO services, drawn from agency and publisher pages.
• No People Also Ask box appeared on the 12 searches where we checked for one.

The 15 searches

Search volumes: Google Ads monthly averages for the US, DataForSEO, November 7, 2026.

What it means for a service business

The software you already pay for may be the source Google quotes. For every trade search with an AI Overview, Google cited a field service software company's blog. Those companies publish plain how-to guides for their customers, and the overviews lean on them. A contractor reading one of these overviews may be reading their scheduling software's marketing advice, summarized.

Video counts. YouTube showed up in 11 of 14 overviews. A short, specific video on a narrow question ("how to set up a service area business on Google") is a realistic way into these answers for a small firm.

Forum threads get quoted too. Reddit appeared in 5 overviews. Buyers read those threads, and so does Google.

If you want to see whether the assistants name your own business, the AI visibility checker builds the questions and keeps the record. What ChatGPT search and Google's AI Mode need from a site, each from the vendor's own documentation, is in the ChatGPT SEO guide and the Google AI Mode guide.

What we did not measure

• One snapshot, one day, one location (US), desktop only. AI Overviews change by location, device and day.
• 15 searches, chosen because they are the searches Passieon's own buyers make. They are not a sample of all searches.
• Source types are our own labels, made from each cited domain or source name. Where Google showed a source name but hid the domain behind a redirect, we labeled it by the name.
• We counted whether a source type was cited in an overview, not how many times.
• We did not check whether the cited pages also ranked in the regular results below, or what made a page get cited.

Method

• Tool: DataForSEO SERP API, endpoint /serp/google/organic/live/advanced, location United States (2840), language English, desktop, depth 10, with asynchronous AI Overview loading on.
• Date: November 7, 2026, 15:58 to 16:01 UTC.
• For each search we recorded whether an AI Overview appeared, every reference it listed, and whether its text quoted a price.
• The reference lists were recorded from the API responses on November 7, 2026 and are available on request.
• People Also Ask was checked on 12 of the 15 searches: small business seo services, google business profile optimization, ai search optimization, dental seo, shopify seo agency, home services seo, white label seo, hvac seo, plumber seo, chatgpt seo, white label web design, contractor seo. None showed one.
• Passieon's own site was not cited in any of the 14 overviews.