The verdict in three sentences
A technical SEO audit is not an 80-page report that gathers dust: it is a prioritized action plan listing what blocks your visibility and in which order to fix it. In 2026, budget 800-2,000 EUR for an express audit (quick wins) and 2,500-6,000 EUR for a full audit covering crawl, server logs, Core Web Vitals, semantics and backlinks. The expected return: +20-40% organic traffic in 6-9 months, provided the fixes are actually shipped.
What an audit covers and what it costs
Price scales with analysis depth and site size. A 30-page brochure site does not require the same effort as a 5,000-URL B2B platform with faceted navigation and pagination.
| Audit type | Scope | 2026 price | Turnaround |
|---|---|---|---|
| Express / quick wins | Basic crawl, tags, indexing, 15-20 fixes | 800 - 2,000 EUR | 3-5 days |
| Standard | + Core Web Vitals, structure, internal linking, semantics | 2,500 - 4,000 EUR | 1-2 weeks |
| Full | + log analysis, crawl budget, backlinks, competition | 4,000 - 6,000 EUR | 2-4 weeks |
| Audit + retainer | Full audit then monthly fix delivery | 6,000 EUR + 1,000-3,000 EUR/mo | ongoing |
An express audit is enough for a recent, well-built site. An old site migrated several times or heavy with generated pages warrants the full audit: that is where double-digit gains hide.
The technical areas actually analyzed
A serious audit goes far beyond title tags. Here are the blocks that move rankings and their typical impact.
| Area analyzed | Common problem | Traffic impact |
|---|---|---|
| Indexing & crawl budget | Zombie pages, duplicate URLs crawled | +5 to +15% |
| Core Web Vitals | LCP > 4s, high INP on mobile | +5 to +12% |
| Architecture & linking | Pages 5+ clicks deep, no silos | +8 to +20% |
| Semantics / intent | Content that misses the target query | +10 to +25% |
| Backlinks | Weak or toxic link profile | +5 to +15% |
| Structured data | No JSON-LD (Organization, FAQ, Product) | rich results |
The rule: an audit that does not produce a costed 3-6 month roadmap with tasks prioritized by effort/impact has no commercial value.
Mini case study
Sarah, marketing lead at a 45-person industrial SME, sees organic traffic stuck at 1,800 visits/month for a year. She commissions a full audit at 4,200 EUR. Priority fixes: cleaning up 340 zombie pages, cutting LCP from 4.1s to 2.3s, rebuilding internal linking, adding JSON-LD. Nine months later, traffic reaches 2,520 visits/month (+40%), generating 18 extra qualified leads monthly. At an average contract value of 6,000 EUR and an 8% close rate, the audit pays for itself in under two months.
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FAQ
What is the difference between a technical SEO audit and a monthly retainer?
The audit is a one-off diagnostic (800-6,000 EUR) producing a roadmap. The monthly retainer (1,000-3,000 EUR/mo) executes and steers those fixes over time, with rank tracking and reporting.
How long until results appear?
Technical quick wins (indexing, speed) show effects in 4-8 weeks. Semantic and backlink gains materialize over 3-9 months depending on your sector's competition.
Does an audit guarantee more traffic?
No. An audit identifies the levers; the +20-40% gain assumes the fixes are actually shipped. An unimplemented report changes nothing.
Should the audit be repeated every year?
An annual express audit (800-1,500 EUR) is enough for a healthy site. A full audit is justified after a migration, a redesign or an unexplained traffic drop.
How much is log analysis and is it essential?
It is included in the full audit (4,000-6,000 EUR) and reveals how Google actually spends your crawl budget. Essential above 2,000 URLs, optional for a small brochure site.
Let's scope your project. Tell us your site size, CMS and traffic goal, and we will say whether an express audit (from 800 EUR) or a full one (up to 6,000 EUR) fits. 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.
