The verdict in three sentences
A prior technical SEO audit is the life insurance of any rebuild: it reveals what drives your traffic before you break it. Budget 1,500 to 3,500 EUR and 1-2 weeks to map 100-500 URLs and diagnose crawl, indexing and structure. It is the reference document that will drive the redirect plan and the project brief.
The four families of audit points
A serious audit covers four families: crawl (bot accessibility), indexing (what Google actually keeps), performance (Core Web Vitals) and structure (internal links, structured data). Each point gets a priority and an estimated fix cost.
| Audit point | Family | Priority | Fix cost (EUR) |
|---|---|---|---|
| Orphan / deep URLs | crawl | high | 400 - 1,000 |
| Pages wrongly set to noindex | indexing | critical | 200 - 600 |
| Duplicate content | indexing | high | 500 - 1,500 |
| Core Web Vitals in the red | performance | high | 3,000 - 7,000 |
| Missing/broken JSON-LD schema | structure | medium | 500 - 1,200 |
| Inconsistent hreflang | structure | high | 600 - 1,400 |
| Weak internal linking | structure | medium | 400 - 1,000 |
| Stale sitemap | crawl | medium | 200 - 500 |
The 2026 ranges are an order of magnitude; a 5,000-URL site needs more analysis than a 40-page marketing site.
What crawl budget reveals
On large sites, Google explores only part of the pages on each pass: that is the crawl budget. An audit identifies waste (URL parameters, low-value pages) to focus crawling on strategic pages.
| Crawl metric | Healthy site | Problem site | Action |
|---|---|---|---|
| Indexed / submitted pages | > 90% | < 60% | Clean noindex/404 |
| Parameter URLs crawled | < 5% | > 25% | Canonical + robots |
| Average depth | <= 3 clicks | > 5 clicks | Rework internal links |
| Active 404 errors | < 1% | > 8% | 301 redirects |
| Average crawl interval | daily | > 2 weeks | Sitemap + logs |
Mini case study
Julie is head of marketing at a B2B services firm with a 280-URL site. Before launching her rebuild, she commissions an audit at 2,600 EUR. It reveals that 45 pages are wrongly set to noindex (they represented 22% of potential traffic) and an overly deep link structure. Fixing these before the rebuild prevents freezing the errors into the new site and saves an estimated 3,400 visits/month, roughly 9,500 EUR/month in SEA-equivalent value. The audit pays for itself within days.
FAQ
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Does a technical audit replace a content audit?
No, they are complementary. The technical audit checks accessibility and structure; the content audit assesses relevance and editorial performance. A serious rebuild combines both.
How long does a technical audit take?
From 1 to 2 weeks depending on site size. A 40-page marketing site wraps up in a few days; a several-thousand-URL site needs longer log analysis.
Which tools are used?
A crawler (like Screaming Frog), Search Console, a Core Web Vitals tool and, on large sites, server log analysis. The deliverable is a prioritized report, not a raw export.
Should I audit before or during the rebuild?
Before, without exception. The prior audit defines what to preserve and feeds the redirect plan. Auditing afterward just documents the damage.
What does the final deliverable contain?
A URL map, a prioritized fix list with estimated costs, and recommendations for the rebuild brief. It is an actionable document, not a theoretical one.
Let's scope your project. Give us the URL, an approximate page count and your rebuild timeline, and we'll quote the right technical audit. 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.
