The verdict in three sentences
A technical SEO overhaul for a B2B site in Rotterdam costs between 3,800 and 14,000 EUR excluding VAT in 2026, depending on URL count and how deep the problems go. The best return almost always comes from speed and indexing fixes before any new content is produced. A credible quote breaks down working days per line item and includes 3 months of monitoring to confirm Google has picked up the changes.
Where a Rotterdam B2B company usually starts
Illustrative profile: the marketing director of a port logistics and freight forwarding company near the Maasvlakte, with a 1,200 URL site in Dutch, English and German and organic traffic down 30 % over 12 months. The usual suspects: slow service pages on mobile, broken or missing hreflang between the three language versions, old trade fair and news pages still indexed, and tracking scripts loading before the main content. None of this shows on screen, but all of it drags down visibility.
The itemised quote
| Line item | Scope | Working days | Indicative 2026 cost (excl. VAT) |
|---|---|---|---|
| Technical audit | Full crawl, Search Console, log files where available, priorities | 2 to 5 | 1,800 to 5,000 EUR |
| Indexing and structure | Thin pages, redirects, canonicals, sitemaps, internal links | 1 to 4 | 700 to 3,000 EUR |
| Speed and Core Web Vitals | Images, scripts, caching, fonts, mobile rendering | 1 to 6 | 1,200 to 5,500 EUR |
| Markup and structured data | Titles, Organization, Service, FAQ, breadcrumbs | 1 to 3 | 700 to 2,200 EUR |
| Multilingual hreflang | NL, EN and DE annotations, consistent URL patterns | 1 to 3 | 600 to 2,000 EUR |
| 3 month monitoring | Checks, residual fixes, reporting | 1 to 2 | 600 to 1,800 EUR |
The platform drives the total: a well built WordPress or headless site is quick to fix, while an older custom build often needs the original developer, priced separately.
Three budget levels by site size
| Site profile | URLs | Days | Total budget (excl. VAT) | Recurring costs |
|---|---|---|---|---|
| Clean B2B brochure site | 300 to 500 | 6 to 8 | 3,800 to 6,000 EUR | Quarterly check, 400 to 700 EUR |
| Multilingual B2B site with services catalogue | 500 to 1,500 | 9 to 14 | 6,000 to 10,000 EUR | Monthly check, 500 to 1,000 EUR |
| Heavy B2B site with resources hub | 1,500 to 3,000 | 15 to 22 | 10,000 to 14,000 EUR | Monthly check, 700 to 1,400 EUR |
In the Randstad, a senior technical SEO consultant charges roughly 650 to 950 EUR a day in 2026 (estimate). Be cautious with a flat fee quote that shows no working days: it often hides an automated audit with no implementation.
What an overhaul does not do
Technical work removes the brakes; it does not create demand. Once the site is healthy, you need pages that answer what your buyers search for and steady tracking of rankings and enquiries. That is where an ongoing programme takes over, aimed at a simple goal: more quote requests coming from Google.
Mini case study
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Illustrative example: Daan, marketing director of a freight forwarder in Rotterdam, signs off a 9,000 EUR quote for 13 days on 1,200 URLs. Before the work, the site drew 3,200 organic clicks a month and 12 quote requests. If the fixes bring clicks back to last year's 4,400 and conversion holds, requests rise to about 16 a month. With one in five closing at 8,000 EUR gross margin, the 4 extra requests add roughly 6,400 EUR of margin a month: the overhaul pays back in under 2 months.
FAQ
How much does a technical SEO audit alone cost?
Around 1,800 to 5,000 EUR excluding VAT for a B2B site of 300 to 3,000 URLs. An audit without a prioritised fix plan has little value.
How quickly do fixes show results?
First signals appear in Search Console within 2 to 6 weeks. The full traffic effect is better judged at 3 months, hence the monitoring.
Do we need a full rebuild?
Rarely: in about 80 % of cases a targeted overhaul is enough. A rebuild only makes sense if the platform blocks basic fixes.
Does hreflang really matter for a Dutch B2B site?
Yes, when you publish in Dutch, English and German. Broken hreflang can show the wrong language to German or UK buyers and split signals across versions.
What should follow the overhaul?
A monthly or quarterly check at 400 to 1,400 EUR, plus a content and rankings plan. Without monitoring, errors creep back with every site update.
Get found by the customers looking for you. Start with the 100,000 FCFA visibility audit (about 152 EUR), credited against setup if you start within 30 days, then move to the Traffic Engine plan that fits, from 125,000 to 350,000 FCFA a month (about 191 to 534 EUR), with a weekly report. Traffic Engine. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
