SEO agency in Rotterdam
Rank in Google and get named in ChatGPT, from the Groot Handelsgebouw.
Zalm Partners is an SEO agency in Rotterdam, based in the Groot Handelsgebouw next to Rotterdam Central Station. We do classic search engine optimisation plus the new layer on top: making sure your business gets named in ChatGPT, Perplexity and Google AI Overviews. More than 50 current and completed projects, each with measurable results.
What sets us apart from most agencies: we build websites ourselves. When you understand the engineering under a site, a speed issue or crawl error never needs a ticket to a third party. Strategy, content and engineering come from the same team.
What an SEO agency needs to master today
The search results page of five years ago no longer exists. An AI summary now sits above the blue links, and a growing share of your customers ask ChatGPT or Perplexity directly. An agency that only optimises Google positions is optimising for a shrinking part of the field.
That is why we measure and improve two things at once: your Google rankings, and how often AI search engines name you and cite your pages as a source. For Dakwerken Roofit that meant the number one spot on Perplexity, ChatGPT and Google AI Overviews at the same time, and twenty percent more enquiries per week. For ANSWRD, organic traffic from Google grew sevenfold after the new site.
Our approach: measure first, then build, then grow
Every engagement starts with a first measurement: where you rank in Google today, how often AI models mention your brand, and who currently owns the answers that should be yours. We discuss those insights before anything gets built or written.
Then we work in a fixed rhythm. Engineering first: speed, crawlability, structured data. Next comes content that answers your customers' questions literally, one question per page. Every month you see what it delivers in a report built around enquiries and revenue, not just rankings.
- Measurement of Google positions and AI visibility
- Technical foundation: speed, indexation, structured data
- Content plan built on real customer questions
- Monthly reporting on enquiries, not just rankings
Wondering what this means for your site?
Ask usWho this works for
Our clients are founders and marketing teams in small and mid-sized businesses: construction companies, legal services, platforms, online shops. None of them have an in-house SEO team; all of them want their website to produce enquiries instead of just visitors.
A two-person publisher we work with outranks Bol.com in AI answers about children's books. A Belgian cleaning company that started from zero now takes one in five ChatGPT answers in its market within six months. The size of your company does not set your ceiling; the quality of your answers does.
What determines the cost of SEO?
The cost of an SEO engagement depends on three things: the state of your website (a technically healthy site needs less repair work), the competition in your market, and how fast you want to grow. A local service business in a niche moves at a different pace than a national webshop in a crowded category.
We work with a fixed monthly fee, no surprises afterwards, and no contracts that lock you in if it is not working. After an initial conversation we dig into your situation, and you receive a proposal with a concrete number and an honest estimate of what the first six months can achieve. If we think SEO is not the best spend for your situation, we will say so.
Frequently asked questions
Expect three to six months for the first measurable movement and six to twelve months for solid results. Technical fixes and AI visibility often move faster: with a good answer to a concrete question, we sometimes see citations in AI search engines appear within weeks.
No. Our office is in Rotterdam and many clients come from the region, but we work for companies across the Netherlands and Belgium. Local visibility in another city follows the same playbook as here.
SEO optimises for Google's ranking list. GEO (generative engine optimization) makes AI search engines such as ChatGPT and Perplexity name your brand and cite your pages in their answers. The basics overlap, but GEO adds requirements: answer-first content, structured data and a site AI crawlers can read well. We do both in one engagement.
Yes. We always start with a conversation: explain your situation and where you want to go. We dig into it and come back with insights and concrete next steps, no strings attached.
We write, you approve. The substance comes from interviews with you and your team, because that is where the knowledge lives. Our editors turn it into pages that rank and get cited, in a tone that fits your brand.
We usually schedule an intro call within a few days. A full engagement typically starts two to three weeks after sign-off. Send a message through the form below and we will reply within one working day.
Related pages
Curious where you stand today?
Get in touch and tell us briefly where you stand and where you want to go, in Google and in AI search engines. We dig into your situation and come back with insights and a concrete plan with next steps. We reply within one working day.