4Core Digital
Calls it: AI-Powered SEO & Digital Growth Agency, its own framework called the 4Core AI Growth Framework (Search Intelligence, Website Optimization, Content Authority, Growth & Conversion).
Founded 2016.
Stated on their site
- Has a named plumbing service page, "SEO For Plumbers That Want More Calls & Booked Jobs."
- States it optimizes for ChatGPT, Google AI Overviews, Gemini and Perplexity, all four named.
- Publishes monthly SEO plan prices from $250 to $800 a month.
- Shows a plumbing case study claiming Organic Traffic +1,100 percent for a Canadian plumbing client.
Not found on the pages we read
- No price published for its AI search work, which sits in an unpriced custom plan.
- States plainly that no ethical agency can guarantee exact rankings, so no guarantee is made.
- No single HQ city stated.
- The plumbing case study figure carries no date.
In full, as the research recorded it
- Minimum term
- not stated. The packages FAQ says "Our SEO packages are monthly, but SEO works best when done consistently for at least 3 to 6 months."
- Guarantee
- none stated, the site says no ethical SEO agency can guarantee exact rankings
- Published research
- none found. The /blog/ page lists articles and case studies, no research report
- Dated proof
- no dated proof published. Its plumbing page shows the Drain5etoiles Local SEO Canada case study, "Organic Traffic +1,100%", and its case study page marks the work "Ongoing" with no dates. A separate, non plumbing case study cites 36,560 ChatGPT sessions and $287K+ revenue from LLM traffic, also undated
Read on 11 October 2026: 4coredigital.com/, 4coredigital.com/about, 4coredigital.com/pricing, 4coredigital.com/packages, 4coredigital.com/industries/seo-for-plumbers, 4coredigital.com/case-studies/drain5etoiles-local-seo-canada, 4coredigital.com/blog. Anything this page calls none published or not stated is what we did not find on those pages that day.