The verdict in three sentences
When organic traffic stalls, a technical audit is the most rational investment before any project: it costs 1,500 to 5,000 EUR and ships in 2 to 3 weeks. It checks 80 to 150 points (crawl, indexation, internal linking, Core Web Vitals) and produces a prioritised action plan. It is the diagnosis that stops you spending 20,000 EUR on content for a site Google cannot index properly.
What a technical audit really checks
A serious audit is not just an automated tool report. It combines a full crawl, server log analysis, Search Console data and a manual inspection of templates.
| Audited area | What is checked | Estimated gain if fixed |
|---|---|---|
| Crawl & budget | Orphan pages, loops, parameters | +10-25 % indexed pages |
| Indexation | noindex, canonical, sitemap | +15-30 % visibility |
| Internal linking | Depth, anchors, silos | +10-20 % long-tail traffic |
| Core Web Vitals | LCP, INP, CLS | +5-15 % mobile conversion |
| Duplicate content | Similarity, pagination, facets | End of cannibalisation |
| Structured data | Schema.org, rich results | +5-12 % SERP CTR |
Price grid by site size
Price depends on URL count, technical complexity (JS, e-commerce, multilingual) and the depth of log analysis.
| Site type | URL volume | Audit price | Lead time | Points checked |
|---|---|---|---|---|
| B2B brochure site | < 50 | 1,500 EUR | 1-2 weeks | 80 |
| B2B site + blog | 50-300 | 2,500 EUR | 2 weeks | 110 |
| E-commerce site | 300-2,000 | 3,800 EUR | 2-3 weeks | 130 |
| Complex platform | > 2,000 | 5,000 EUR | 3 weeks | 150 |
Mini case study
Nadia, acquisition lead at a B2B software vendor in Amsterdam, sees organic traffic drop 18 % over 6 months despite steady publishing. She orders an audit at 2,500 EUR. The diagnosis reveals the blog redesign spawned 340 duplicate pages via parameter URLs, diluting authority. After the fix (canonical + redirects), traffic climbs 31 % in 4 months, roughly 2,200 extra qualified visitors a month. The audit paid for itself within 6 weeks of recovered leads.
FAQ
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How much does a technical SEO audit cost in 2026?
Between 1,500 EUR for a brochure site and 5,000 EUR for a complex platform. Price reflects URL count and depth (log analysis, JavaScript rendering, manual template review).
How does it differ from a free tool audit?
A crawler tool gives a raw list of errors, with no prioritisation or business context. A paid audit delivers an action plan ranked by impact/effort and an expert interpretation.
How long does it take to deliver?
Expect 2 to 3 weeks. Part of that lead time collects enough data (logs, Search Console) for a reliable diagnosis rather than a snapshot.
Do I need an audit before every redesign?
Yes. A pre-audit identifies what already works (to preserve) and what blocks (to fix). Redesigning without one risks destroying invisible SEO assets.
What is in the deliverable?
An 80 to 150 point report, a prioritised action plan (quick wins vs projects), an estimated gain per fix, and a readout session to align technical and marketing teams.
Let's scope your project. Brochure site, blog or e-commerce: share your URL count, CMS and the symptom observed. Detailed quote within 48 h. 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.
